The Flat Earth Society

Flat Earth Discussion Boards => Flat Earth Theory => Topic started by: QED on August 04, 2018, 09:25:15 PM

Title: The Crescent Moon
Post by: QED on August 04, 2018, 09:25:15 PM
This is a challenge for any FE'er who wishes to reply, but specifically for Tom Bishop.

I am asking for a detailed picture, along with any supporting graphs, equations, and explanations needed, which can demonstrate how the following situation can be possible according to Rowbotham's claims.

The following four individuals can, simultaneously, take pictures of a crescent moon at night and share it online. The individuals took the pictures from the following locations:

San Francisco, California
Manhattan, New York
Lima, Peru
Buenos Aires, Argentina
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 04, 2018, 10:08:23 PM
What are you talking about? What situation? What data?
Title: Re: The Crescent Moon
Post by: QED on August 05, 2018, 03:00:57 AM
What are you talking about? What situation? What data?

I really do not understand what you don't understand. The situation is the one I detailed above. Is this situation possible in the FE model? If so, then please demonstrate it.

Data? Did you read my post, or are you deliberately being obtuse?
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 05, 2018, 03:12:18 AM
I am asking for a detailed picture, along with any supporting graphs, equations, and explanations needed, which can demonstrate how the following situation can be possible according to Rowbotham's claims.

The following four individuals can, simultaneously, take pictures of a crescent moon at night and share it online. The individuals took the pictures from the following locations:

San Francisco, California
Manhattan, New York
Lima, Peru
Buenos Aires, Argentina

This is how four individuals in SF, NYC, Lima, and Buenos Aries can do what you described:


Here is the equation for that:

Consumer Goods and Services = Labor + Good Work Ethic + Time

Are there any further questions?
Title: Re: The Crescent Moon
Post by: QED on August 05, 2018, 03:23:20 AM
I am asking for a detailed picture, along with any supporting graphs, equations, and explanations needed, which can demonstrate how the following situation can be possible according to Rowbotham's claims.

The following four individuals can, simultaneously, take pictures of a crescent moon at night and share it online. The individuals took the pictures from the following locations:

San Francisco, California
Manhattan, New York
Lima, Peru
Buenos Aires, Argentina

This is how four individuals in SF, NYC, Lima, and Buenos Aries can do what you described:

    Step 1: Get a job and make some money
    Step 2: Use said money that you made to buy a camera, a computer, and internet service
    Step 3: Take a picture of the crescent moon
    Step 4: Upload it online

Here is the equation for that:

Consumer Goods and Services = Labor + Good Work Ethic + Time

Are there any further questions?

Just one: how about you take your own theory seriously? If you cannot demonstrate how this easy scenario can be explained in FE theory, then you clearly know that FET is false.

I am giving you an opportunity here, Thomas. I am a published physicist. If you can demonstrate support of FET through the same rigorous analysis we use then I will promote your work. And that is a promise.

This is your chance, Thomas.

We are starting off with an easy one: a crescent moon viewed from multiple locations on your FE. Show how this is possible. Both moon and sun sit at 3000 miles above the plane of the FE.

If you cannot/will not do this, if all you can muster is a very unfunny joke and dismissal, then the self-acclaimed Tom Bishop has been defeated before ever moving a single pawn.

The pancake is in your court.
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 05, 2018, 03:32:53 AM
Unless you have data for exactly what is seen of the moon and its orientation from various points on earth simultaneously, I don't see that there is anything that needs to be explained.

Here is one for you:

Get a shovel and start digging. You get to the other side of the earth and fall to your death.

How do you explain that?
Title: Re: The Crescent Moon
Post by: QED on August 05, 2018, 03:38:26 AM
Unless you have data for exactly what is seen of the crescent moon and its orientation from various points on earth simultaneously, I don't see that there is anything that needs to be explained.

Here is one for you:

Get a shovel and start digging. You fall out the other side and fall to your death.

How do you explain that?

How disappointing and juvenile. So FET cannot answer this question. A shame, I had many others which were more interesting.

A scientist would never behave with such unfledged diction. If a scientist was given a scenario to test their theory, they would JUMP at the chance to do so. For if they succeeded, then they would have a piece of evidence to add to their collection. But if they failed, then it may indicate their theory must be modified.

You are not interested in such things. You respond to challenges like a child, defiantly holding on to a reality which is fleeing from you.

If you ever decide to approach this challenge with poise and integrity, then I will be here.

Waiting.
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 05, 2018, 03:53:55 AM
What is there that we need to answer for? You asked "how is it possible for people to take a picture of the moon from different locations" without showing what the result is from such an experiment, or even really explaining what you think the expected result will be.
Title: Re: The Crescent Moon
Post by: QED on August 05, 2018, 04:10:11 AM
What is there that we need to answer for? You asked "how is it possible for people to take a picture of the moon from different locations" without showing what the result is from such an experiment, or even really explaining what you think the expected result will be.

That is not my problem, Thomas. You have proposed a FET as valid. The burden on proof lies with you. I have proposed a scenario, and asked for an explanation in the FE model. You have done everything to avoid answering, which means you either a) don't know, or b) cannot figure it out.

What do YOU think these four individuals will photograph? Suppose the following initial conditions: the individual in San Francisco photographs a crescent moon.

Now FET gets to predict what kind of moon the other three would photograph. What does it predict, Thomas? Show us your theory. Stop talking about it, avoiding it, changing topics, failing to answer. Stop doing the behaviors of every single charlatan out there and start behaving like a scientist.

Tell me what FET predicts and why.

You do not get to know the actual answer before you predict it. That is not how science works. You want me to help you by feeding you data and answers. Tough luck. Be a man and deliver.
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 05, 2018, 04:49:49 AM
That is not my problem, Thomas. You have proposed a FET as valid. The burden on proof lies with you. I have proposed a scenario, and asked for an explanation in the FE model.

Burden of proof to explain what? You provided no data for the result of your hypothetical experiment would be.
Title: Re: The Crescent Moon
Post by: QED on August 05, 2018, 05:28:28 AM
That is not my problem, Thomas. You have proposed a FET as valid. The burden on proof lies with you. I have proposed a scenario, and asked for an explanation in the FE model.

Burden of proof to explain what? You provided no data for the result of your hypothetical experiment would be.

"Burden of proof to explain what?"

Oh dear, you are completely clueless.

"You provided no data for the result of your hypothetical experiment would be."

What data do you imagine might follow from a hypothetical experiment? You do understand what these words mean, yes?

No wonder scientists do not take you seriously.
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 05, 2018, 06:14:56 AM
What data do you imagine might follow from a hypothetical experiment? You do understand what these words mean, yes?

Yes. You want us to explain the results of an experiment that happened in your head.

If you have nothing to actually contribute... we know where this thread is going to end up.
Title: Re: The Crescent Moon
Post by: Tumeni on August 05, 2018, 06:43:08 AM
What data do you imagine might follow from a hypothetical experiment? You do understand what these words mean, yes?

Yes. You want us to explain the results of an experiment that happened in your head.

Yet, in the "full moon impossible" thread, you're repeatedly describing a variation on the ball-moon experiment which exists only in your head. No?

Haven't seen any photos of you doing this yet.
Title: Re: The Crescent Moon
Post by: Tumeni on August 05, 2018, 04:30:58 PM
Tom, here's a different, and far cheaper way;

Go to mooncalc.org

Pick a date and time in the future, for a location of your choice. Note carefully the graphic within mooncalc which shows you what the Moon will look like on that date and at that time. Note how the various elements within the mooncalc screen show you all the data about that Moon, in addition to showing you when sunrise and sunset occur, when the Moon will be beyond your horizon, where it will rise, where it will set. You can slide your cursor along the time bar at the top of the screen, and see how the Moon will vary on that day.

You could perhaps note a few times on one date on which to predict what the Moon will look like then.

All you need do on the appointed day is look up.

Optionally, perhaps you could save some screenshots of the prediction according to mooncalc and, if the Moon looks radically different from that predicted, share photos that you take of it on the day?
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 05, 2018, 06:26:20 PM
We've looked at those calculators. They are based on patterns of the moon's presumed movement and occurrences. They even still use Ptolmy's famous lunar perturbations from his pattern-predicting methods used in his geocentric earth calculations.

If you want to compare the results from various points on earth, be my guest. Don't ask me to do your experiments for you, and I won't ask you to do my experiments for me.
Title: Re: The Crescent Moon
Post by: Tumeni on August 05, 2018, 06:36:50 PM
We've looked at those calculators. They are based on patterns of the moon's presumed movement and occurrences. They even still use Ptolmy's famous lunar perturbations from his pattern-predicting methods used in his geocentric earth calculations.

If you want to compare the results from various points on earth, be my guest. I'm not going to do your experiments for you.

If the presumption matches exactly the observation on your chosen date, it no longer is a presumption, surely?

If multiple presumptions come true, how many presumptions do you need before accepting the presumptions as correct? By all means, show us where the presumptions go wrong, if you can.

I'm not suggesting different points. You're not interested in what others do at their points, so I suggest you do it for yours.
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 05, 2018, 06:44:23 PM
You're not interested in what others do at their points, so I suggest you do it for yours.

You are the one with the bigger interest here. I will study what I want to study and you can study what you want to study, and neither of us will demand that the other does work for the other. Does that sound agreeable?
Title: Re: The Crescent Moon
Post by: Tumeni on August 05, 2018, 07:16:54 PM
.... neither of us will demand that the other does work for the other. Does that sound agreeable?

Which bit of   "I suggest...", or  "Here's a way (that you could) ..."  do you interpret as a 'demand' ?
Title: Re: The Crescent Moon
Post by: QED on August 06, 2018, 03:16:43 PM
What data do you imagine might follow from a hypothetical experiment? You do understand what these words mean, yes?

Yes. You want us to explain the results of an experiment that happened in your head.

If you have nothing to actually contribute... we know where this thread is going to end up.

No, Thomas. A theory that describes reality means that it is a theory that can predict what will happen...in reality. I used to live in San Francisco, where I remember seeing a crescent moon one night. What does your theory predict would been seen in the other following locations that I specified? This IS the forum for FET, yes? Where we investigate FET?

This is what scientists do, Thomas. They continuously apply their model to different scenarios to test it.

The more you hide from actually attempting to test your model, the less anyone will ever believe it to be true.

Scientists who believe in their models do not hide like this. It is evident that you do not believe in the FET.
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 06, 2018, 03:21:17 PM
What data do you imagine might follow from a hypothetical experiment? You do understand what these words mean, yes?

Yes. You want us to explain the results of an experiment that happened in your head.

If you have nothing to actually contribute... we know where this thread is going to end up.

No, Thomas. A theory that describes reality means that it is a theory that can predict what will happen...in reality. I used to live in San Francisco, where I remember seeing a crescent moon one night. What does your theory predict would been seen in the other following locations that I specified? This IS the forum for FET, yes? Where we investigate FET?

This is what scientists do, Thomas. They continuously apply their model to different scenarios to test it.

The more you hide from actually attempting to test your model, the less anyone will ever believe it to be true.

Scientists who believe in their models do not hide like this. It is evident that you do not believe in the FET.

What reality? Test against what? You have not posted any data for what will be seen.
Title: Re: The Crescent Moon
Post by: QED on August 06, 2018, 03:22:53 PM
What data do you imagine might follow from a hypothetical experiment? You do understand what these words mean, yes?

Yes. You want us to explain the results of an experiment that happened in your head.

If you have nothing to actually contribute... we know where this thread is going to end up.

No, Thomas. A theory that describes reality means that it is a theory that can predict what will happen...in reality. I used to live in San Francisco, where I remember seeing a crescent moon one night. What does your theory predict would been seen in the other following locations that I specified? This IS the forum for FET, yes? Where we investigate FET?

This is what scientists do, Thomas. They continuously apply their model to different scenarios to test it.

The more you hide from actually attempting to test your model, the less anyone will ever believe it to be true.

Scientists who believe in their models do not hide like this. It is evident that you do not believe in the FET.

What reality? Test against what? You have not posted any data for what will be seen.

Does FET need data before it can provide an answer to a simple question? I'll ask it again:

I used to live in San Francisco, where I remember seeing a crescent moon one night. What does your theory predict would been seen in the other following locations that I specified?
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 06, 2018, 03:28:03 PM
Does FET need data before it can provide an answer to a simple question?

The fact is that the orientation that will be seen will be inexplicable in the Round Earth Theory. I have been waiting for you to post some examples to point it out.
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 05:07:30 PM
At 6pm on the 12th, the Moon as viewed from the Greenwich Observatory in London will look like the graphic in this page

https://www.mooncalc.org/#/51.4769,-0.0005,17/2018.08.12/17:58/1/0

It will be in roughly the West-South-Western part of the sky, and will be approx 30 degrees above the horizon.


--

From the Empire State Building in NYC, some four hours behind London, it will be approx 2pm, and the Moon will be in
the south, and look like this

https://www.mooncalc.org/#/40.7485,-73.9858,17/2018.08.12/13:59/1/0

--

From the Griffith Park Observatory in Los Angeles, the Moon will in the East, and will look like this;

https://www.mooncalc.org/#/34.1193,-118.3002,17/2018.08.12/10:52/1/0

--

From Perth, Australia, it will be approximately 2am on the 13th, and the Moon will not be visible at all, as it
will be on the 'wrong' side of the Earth for the Australians to see

https://www.mooncalc.org/#/-31.9505,115.8605,13/2018.08.13/01:53/1/0

---

Convince me or us that this is "inexplicable" ...
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 06, 2018, 05:34:01 PM
Convince me or us that this is "inexplicable" ...

Real photographs would be better. However, here is a demonstration that those pattern-based moon calculators do not reflect RET.

I took one of your times and went down the Greenwich Longitude (0 degrees E), at 45 degrees North, 0 degrees North, and 45 degrees South. Here are the results:

45 degrees North

(https://i.imgur.com/oWeXLU2.jpg)
Link: https://www.mooncalc.org/#/45,0,3/2018.08.12/17:58/1/2

0 Degrees North

(https://i.imgur.com/oDGZTAg.jpg)
Link: https://www.mooncalc.org/#/0,0,3/2018.08.12/17:58/1/2

45 Degrees South

(https://i.imgur.com/CieqNrB.jpg)
Link: https://www.mooncalc.org/#/-45,0,3/2018.08.12/17:58/1/2
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 05:47:19 PM
Convince me or us that this is "inexplicable" ...

Real photographs would be better.

Oh, boy. Today is the 6th. I'm predicting what will happen on the 12th. And you want "real photographs" ....

I don't have a time machine.
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 05:49:39 PM
I took one of your times and went down the Greenwich Longitude (0 degrees E), at 45 degrees North, 0 degrees North, and 45 degrees South. Here are the results:

What have you 'demonstrated'?
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 06, 2018, 06:20:46 PM
I took one of your times and went down the Greenwich Longitude (0 degrees E), at 45 degrees North, 0 degrees North, and 45 degrees South. Here are the results:

What have you 'demonstrated'?

Here is an image which may provide some clarification:

(https://i.imgur.com/FUPmlQf.png)

Edit: The image hosting service seems to be working and then not working. Here are direct links:

https://i.imgur.com/FUPmlQf.png
https://preview.ibb.co/gGsd6K/moon_conclusion2.png
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 06, 2018, 06:43:47 PM
Here is an example, showing that from the North Pole to South Pole (90o N to 90o S), that the RET difference is about 2 degrees.

It is easy to see how perspective plays very little part in the Round Earth system.

In RET the distance to the moon is 238,900 miles.

Imagining that distance as a radius of a circle, with observers positioned all around the moon, we can get the circumference of that circle with C=2*pi*R.

The circumference is 1501052.96989 miles

We divide it by 360 to get 4169.59158301 miles per degree

The diameter of the earth is 7,917.5 miles

7,917.5 / 4169.59158301 = a ratio of 1.89, or a little less than 2 degrees.

If we place the earth on the circumference we created above, with two observers standing on direct opposite sides of the earth, about 7917.5 miles apart, looking at the moon, should see a difference in shift of less than 2 degrees.

With 45o N to 45o S, instead of 90o N to 90o S, we can cut that in half and see that the difference is 0.949 degrees, or about 1 degree.
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 06, 2018, 09:02:52 PM
Here is a slightly more congruent version of the mooncalc images, with the locations shifted Southward by 10 degrees, where the crescent of the moon is pointing "downwards" on the middle version:

35 degrees North : https://www.mooncalc.org/#/35,0,3/2018.08.12/17:58/1/2
10 degrees South : https://www.mooncalc.org/#/-10,0,3/2018.08.12/17:58/1/2
55 degrees South : https://www.mooncalc.org/#/-55,0,3/2018.08.12/17:58/1/2

Either the moon wasn't exactly over the equator, or the moon wasn't pointing exactly Eastwards. Either way, the orientation of the moon from these different spots more strongly supports the Flat Earth model over the Round Earth model.
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 09:02:58 PM
Here is an image which may provide some clarification:

The differences between the tips of the crescents are 2 x 45 degrees, or 90 degrees in total.

The differences in observer latitude are two sets of 45 degrees, making 90 degrees in total.

What does this indicate to you?
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 09:11:45 PM
Your graphics are faulty.

In the second one, all you've done is draw lines away from the surface. What's the point of view here? Are we behind the observers? To the side of them?

You've taken no account of the position of the Moon in the sky for each observer, and not shown this on your diagram.

 
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 06, 2018, 09:22:28 PM
Here is an image which may provide some clarification:

The differences between the tips of the crescents are 2 x 45 degrees, or 90 degrees in total.

The differences in observer latitude are two sets of 45 degrees, making 90 degrees in total.

What does this indicate to you?

The various orientations the moon appears at suggests to me that the earth is flat.

The degrees of Latitude were originally defined on the angles celestial bodies at the horizon come out of the horizon. At 0 degrees N the Sun comes straight out of the horizon when it is over the equator. At 45 degrees N and S the sun comes out of the horizon at a 45 degree angle N or S.

https://www.google.com/search?q=how+was+latitude+defined

See the following google definition:

Quote
    lat·i·tude
    ˈladəˌt(y)o͞od/
    noun
    noun: latitude; plural noun: latitudes

    the angular distance of a place north or south of the earth's equator, or of a celestial object north or south of the celestial equator, usually expressed in degrees and minutes.

The fact that the moon shifts by that much is not unexpected, since that the longitude lines are based on the changing angles of celestial bodies that come out of the horizon.

That the the shift adds up to 90? Unsurprising, considering how the Latitude was defined.

Your graphics are faulty.

In the second one, all you've done is draw lines away from the surface. What's the point of view here? Are we behind the observers? To the side of them?

You've taken no account of the position of the Moon in the sky for each observer, and not shown this on your diagram.

It's a side view. The 90 degree shift in orientation of the moon is more strongly explained by the Flat Earth model and not the Round Earth model.
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 09:31:20 PM
I've refreshed my screen three times in the last few minutes, and you've edited and changed your post twice, including full delete of your first draft..

Pleas make up your mind about what you want to say before you hit Enter.
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 09:33:11 PM
It's a side view.

Can you do the view along the observer's line of sight, as though you were out in space behind all three?
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 09:43:07 PM
Here is an example, showing that from the North Pole to South Pole (90o N to 90o S), that the RET difference is about 2 degrees.

Angles are measured in degrees. Where do you see this angle of 2 degrees? It must be placed somewhere.


It is easy to see how perspective plays very little part in the Round Earth system.

In RET the distance to the moon is 238,900 miles.

Imagining that distance as a radius of a circle, with observers positioned all around the moon, we can get the circumference of that circle with C=2*pi*R.

Observers on the Moon will not be on that circle. You're calculating the circumference of the Moon's orbit with that formula. A number of observers on the Moon at any one time would, at max, be upon a circle of (2*3.14*1079 =) 6780 miles. 

The circumference is 1501052.96989 miles

That's the length of the Moon's orbit, not the circumference of the Moon


We divide it by 360 to get 4169.59158301 miles per degree

So the Moon moves 4170 miles for each degree of its orbit.

The diameter of the earth is 7,917.5 miles

7,917.5 / 4169.59158301 = a ratio of 1.89, or a little less than 2 degrees.

If we place the earth on the circumference we created above, with two observers standing on direct opposite sides of the earth, about 7917.5 miles apart, looking at the moon, should see a difference in shift of less than 2 degrees.

What 'shift' are you talking about? We're talking about how three individuals see the Moon at one moment in time (approximately). What do you think is 'shifting' in this scenario?
Title: Re: The Crescent Moon
Post by: QED on August 06, 2018, 09:50:31 PM
Does FET need data before it can provide an answer to a simple question?

The fact is that the orientation that will be seen will be inexplicable in the Round Earth Theory. I have been waiting for you to post some examples to point it out.

What I am waiting for is for you to answer the simple question, which I have now explicitly asked twice.

This forum is entitled FET not RET.
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 09:55:47 PM
The degrees of Latitude were originally defined on the angles celestial bodies at the horizon come out of the horizon. At 0 degrees N the Sun comes straight out of the horizon when it is over the equator. At 45 degrees N and S the sun comes out of the horizon at a 45 degree angle N or S.

Degrees of latitude only have meaning as angles. Where would you draw the angle, if not at the centre of a circle or globe?

The fact that the moon shifts by that much is not unexpected, since that the longitude lines are based on the changing angles of celestial bodies that come out of the horizon.

... and these LATITUDE lines correspond exactly with the difference in angle each observer will see in the angle of the Moon. Diagram to follow.
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 06, 2018, 10:18:22 PM
Here is an example, showing that from the North Pole to South Pole (90o N to 90o S), that the RET difference is about 2 degrees.

Angles are measured in degrees. Where do you see this angle of 2 degrees? It must be placed somewhere.


It is easy to see how perspective plays very little part in the Round Earth system.

In RET the distance to the moon is 238,900 miles.

Imagining that distance as a radius of a circle, with observers positioned all around the moon, we can get the circumference of that circle with C=2*pi*R.

Observers on the Moon will not be on that circle. You're calculating the circumference of the Moon's orbit with that formula. A number of observers on the Moon at any one time would, at max, be upon a circle of (2*3.14*1079 =) 6780 miles. 

The circumference is 1501052.96989 miles

That's the length of the Moon's orbit, not the circumference of the Moon


We divide it by 360 to get 4169.59158301 miles per degree

So the Moon moves 4170 miles for each degree of its orbit.

The diameter of the earth is 7,917.5 miles

7,917.5 / 4169.59158301 = a ratio of 1.89, or a little less than 2 degrees.

If we place the earth on the circumference we created above, with two observers standing on direct opposite sides of the earth, about 7917.5 miles apart, looking at the moon, should see a difference in shift of less than 2 degrees.

Moon circumference? I'm talking about the distance around the moon. Here is an illustration:

(https://i.imgur.com/pHS8BnA.png)
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 10:20:15 PM
The side view looks like this, surely;

(https://i.imgur.com/oSTExBf.jpg)

If you were to the rear of all the observers, looking past the Earth toward the Moon, their views would vary, because of the difference in their LATITUDE. The observer at the equator will have the crescent toward the bottom of the Moon, and the observers at 45N or 45S will have it inclined to this aspect by 45 degrees each.

(https://i.imgur.com/lOa8DUh.jpg)

Tom, do you see how the vertical for each observer matches the dotted red lines you put on the mooncalc screen prints?

Do you see how the yellow lines connecting observer position on the screen prints with the Moon all correspond to the three green lines in the side view?
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 10:25:32 PM
Moon circumference? I'm talking about the distance around the moon. Here is an illustration:
IMG

You're taking radius R as the distance TO the Moon. If you calculate a circle based on that, you're calculating the Moon's orbit length. The circumference of a circle with radius of 240k miles approx.

If you want the "distance around the Moon", or its circumference, you need to take the Moon's radius.
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 06, 2018, 10:35:40 PM
The difference between 45o N and 45o S would be very slight under the geometry of the Earth-Moon System.

(https://i.imgur.com/CTOCE1I.png)
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 06, 2018, 10:47:24 PM
If you were to the rear of all the observers, looking past the Earth toward the Moon, their views would vary, because of the difference in their LATITUDE. The observer at the equator will have the crescent toward the bottom of the Moon, and the observers at 45N or 45S will have it inclined to this aspect by 45 degrees each.

(https://i.imgur.com/lOa8DUh.jpg)

I don't see how that makes much sense. That doesn't use Round Earth Geometry. In fact, it seems to be assuming that the moon is very close to the earth.
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 10:47:56 PM
If you were to the rear of all the observers, looking past the Earth toward the Moon, their views would vary, because of the difference in their LATITUDE. The observer at the equator will have the crescent toward the bottom of the Moon, and the observers at 45N or 45S will have it inclined to this aspect by 45 degrees each.

IMG

I don't see how that makes any sense at all. That doesn't use Round Earth Geometry. In fact, it is assuming that the moon is very close to the earth.

No, it is assuming you are looking PAST the Earth toward the Moon which is in the far distance. Read the legends on the diagram.

Do you look at this and think the Moon is close to my baseball?

https://imgur.com/a/Ci10Oo7
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 10:56:03 PM
The difference between 45o N and 45o S would be very slight under the geometry of the Earth-Moon System.

IMG

Yes, and this corresponds to the observer on the equator looking broadly due West, the observer at 45S looking slightly North of West, and the observer at 45N looking slightly South of West.

Exactly as mooncalc predicts.

However, that's when viewed from the side of the Earth/Moon system, describing a triangle where one side is the distance between the highest and lowest observer, the other two sides their sightlines to the Moon, and the difference being a small angle at the point of the triangle at the Moon. 

If you view the situation from the rear of the observers, with you and they looking toward the Moon, the one at the equator, if you are aligned N-S, will appear to be horizontal, with the others inclined at 45 degrees each to him/her. The observer at the equator will see the crescent at the bottom of his/her Moon, the others will see the crescent inclined at 45 degrees to this - exactly as you drew in with the dotted red lines on the mooncalc screen prints, and exactly as mooncalc predicts.
Title: Re: The Crescent Moon
Post by: Tumeni on August 06, 2018, 11:00:25 PM
The difference between 45o N and 45o S would be very slight under the geometry of the Earth-Moon System.

(https://i.imgur.com/CTOCE1I.png)

This is just my side view flipped horizontally, isn't it? You've shown Earth left, Moon right, I showed Moon left, Earth right.

Surely the easy way to do this is to calculate a triangle with two sides of 240k miles, and one of the distance between the two observers at 45N and 45S, and solve for the angle opposite the side which connects them? That would take away your totally artificial circle of the Earth going around the Moon.

The short side will be the length of chord BX, where the angle at M is 90 degrees, assuming two observers at 45N and 45S.

(https://upload.wikimedia.org/wikipedia/commons/thumb/e/ea/Chord_in_mathematics.svg/200px-Chord_in_mathematics.svg.png)

https://en.wikipedia.org/wiki/Chord_(geometry)

(I genuinely thought you were drawing the orbit of the Moon around the Earth. Way to make things more confusing.)
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 07, 2018, 02:17:38 AM
The difference between 45o N and 45o S would be very slight under the geometry of the Earth-Moon System.

https://i.imgur.com/CTOCE1I.png

This is just my side view flipped horizontally, isn't it? You've shown Earth left, Moon right, I showed Moon left, Earth right.

Surely the easy way to do this is to calculate a triangle with two sides of 240k miles, and one of the distance between the two observers at 45N and 45S, and solve for the angle opposite the side which connects them? That would take away your totally artificial circle of the Earth going around the Moon.

The short side will be the length of chord BX, where the angle at M is 90 degrees, assuming two observers at 45N and 45S.

(https://upload.wikimedia.org/wikipedia/commons/thumb/e/ea/Chord_in_mathematics.svg/200px-Chord_in_mathematics.svg.png)

https://en.wikipedia.org/wiki/Chord_(geometry)

I don't think it will matter. the North Pole and South Pole are still aligned with those points on the circumference with either method. I will try it out, however.

Quote from: Tumeni
I genuinely thought you were drawing the orbit of the Moon around the Earth. Way to make things more confusing

That's okay. No hard feelings.

(https://i.imgur.com/iJ2Mmy8.png)
Title: Re: The Crescent Moon
Post by: model 29 on August 07, 2018, 02:22:00 AM
Thing is Tom, on your "close moon - flat Earth" diagram, completely different faces of the moon would be seen.  This is not observed.

Between the different latitudes on a globe however, the face of the moon rotates due to the different angles between different latitudes.  This is what is observed.
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 07, 2018, 02:31:41 AM
Thing is Tom, on your "close moon - flat Earth" diagram, completely different faces of the moon would be seen.  This is not observed.

That has been an on and off discussion. See: https://forum.tfes.org/index.php?topic=10013.0

Also, as shown on Page 1 of this thread, there are not many good sources of pictures of the moon taken simultaneously, to say what exactly happens.

Quote from: model 29
Between the different latitudes on a globe however, the face of the moon rotates due to the different angles between different latitudes.  This is what is observed.

Demonstrate this with your model, rather than just saying it. I gave a demonstration. Your Round Earth model does not explain it at all.
Title: Re: The Crescent Moon
Post by: model 29 on August 07, 2018, 02:45:08 AM
there are not many good sources of pictures of the moon taken simultaneously, to say what exactly happens.
Doesn't need to be simultaneously.  If the moon were close to a flat plain, different faces would be seen as it moved overhead.  Has this ever been observed?

Quote
Your Round Earth model does not explain it at all.
It does actually.  Anyone with a ball, camera, and an object with surface features can try it.  At 45N, when viewing the moon set, there is a 90 degree difference in viewing angle from viewing it when it rises.

If you have ever seen a desktop globe in real life, or perhaps any ball, have a think about it.
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 07, 2018, 06:07:00 AM
It does actually.  Anyone with a ball, camera, and an object with surface features can try it.  At 45N, when viewing the moon set, there is a 90 degree difference in viewing angle from viewing it when it rises.

If you have ever seen a desktop globe in real life, or perhaps any ball, have a think about it.

Model it. Use the Round Earth Distances to explain it.
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 07, 2018, 06:12:52 AM
While researching this, I found several other inexplicable Round Earth items.

- The Moon is above the horizon for observers on the Prime Meridian and the Antimeridian simultaneously, when it should not be

- The Moon is pointing in the wrong direction on the horizons of the PM and AM. While the Moon will never "tilt" or "rotate" in the Round Earth model, it is possible to look at it upside-down when standing on opposite sides of the earth.

- The Moon is above the Western Horizon for observers on the Prime Meridian and the Antimeridian, when it should be on the Western Horizon for the Prime Meridian and the Eastern Horizon for the Antimeridian

Explanatory image:

(https://i.imgur.com/E8Ogpn6.png)

(https://i.imgur.com/itm8Kfk.png)

Here is what the Mooncalc shows for the Prime Meridian and the Antimeridian:

Prime Meridian

(https://i.imgur.com/pa7oQA7.jpg)

Link: https://www.mooncalc.org/#/0,0,3/2018.08.12/17:58/1/2

Antimeridian

(https://i.imgur.com/IoQQE5r.jpg)

Link: https://www.mooncalc.org/#/0,180,3/2018.08.12/17:58/1/2
Title: Re: The Crescent Moon
Post by: Tumeni on August 07, 2018, 06:14:56 AM
(https://i.imgur.com/iJ2Mmy8.png)

Tom, would you say the brown-roofed houses in this photo are close to the sign at the left of the tracks? You can see how, if you look at the Earth and Moon from behind the observers, that their lines of sight would look like the two rails, can't you?

(https://st3.depositphotos.com/1022597/16634/i/1600/depositphotos_166343520-stock-photo-railway-track-perspective.jpg)

Again, would you say the Moon here is 'close' to my baseball?

(https://i.imgur.com/u4kMznR.jpg)



You can't just show everything as a side view and hope that will fly. If you want to show, in diagrammatic form, what something in 3D looks like, you have to show it in plan, side, front, and possibly rear views.

Diagrams to follow
Title: Re: The Crescent Moon
Post by: Tumeni on August 07, 2018, 06:31:02 AM
If you look at the lines of sight from three observers, 45N, Equator, and 45S, then they, in plan, side-on, and underside views will look like this.

(https://i.imgur.com/xOyPh8c.jpg)

Tom, do you agree? Y/N?

If not, why not? This is the same as your diagram which indicates your difference in angle between the observers, isn't it?
Title: Re: The Crescent Moon
Post by: Tumeni on August 07, 2018, 07:05:11 AM
This is the first step of modelling this with RE distances.

(https://i.imgur.com/82pcXRK.jpg)

The three observers are at the points indicated by the green squares. Their lines of sight to the Moon (orange) are not to scale, the Moon would be far over to the left.

If the diameter of Earth is taken as 7926 miles, then the radius is (7926/2 =) 3959, and the length of chord C (the orange vertical) is 5598 miles, using the formula on this page ("So the length of the chord is: ")

https://www.ck12.org/trigonometry/length-of-a-chord/lesson/Length-of-a-Chord-TRIG/



If the length of this chord is 5598, and we take the distance from the 45N and 45S observers to be exactly 240k miles to the Moon, that gives us an isosceles triangle, or two right-angle triangles back-to-back, one with hypotenuse to 45N, one to 45S.
Let's solve for the angle at the Moon for the right-angles, and double it.

Right-triangle calculator;

http://www.cleavebooks.co.uk/scol/calrtri.htm

Side a = half the length of the chord, so 5598/2 = 2799, and side c = 240,000. Angle A = 0.668 degrees, so the angle at the Moon made by taking the two lines of sight from 45N and 45S is 2 * 0.668 = 1.336 degrees.

This gives us the angle at the Moon made by taking the difference between lines of sight from 45N and 45S (indicated by two orange squares).

The chord length will not vary, as long as the observers are at 45N and 45S, they are on the side of the Earth facing the Moon, and we take the distance to the Moon as a fixed 240k miles (I'm excluding any allowance for Earth's axial tilt at present, and discounting any change in the 240k as they move nearer or further to the Moon along the line of latitude)



Tom, look at the above and tell me/us - do you agree?  Y/N

Do you also agree that this is another way to calculate the angle that you were trying to calculate with your huge circle around the Moon, isn't it?
Title: Re: The Crescent Moon
Post by: Tumeni on August 07, 2018, 07:24:09 AM
If we could look at these lines of sight from a position out in space behind the observers, not in side, plan or underside views, they will look like this

(https://i.imgur.com/MZh0UoS.jpg)


We're roughly aligned with the central observer (who we've taken as being on the equator), and the lines of sight from 45N
and 45S would start out 2799 miles away from this observer (at each end of the chord which has just been calculated), and
converge on the Moon, 240k miles away.

The Moon is decidedly not close to the baseball.

Tom, do you agree?  Y/N

 
Title: Re: The Crescent Moon
Post by: Tumeni on August 07, 2018, 07:49:03 AM
While researching this, I found several other inexplicable Round Earth items.

- The Moon is above the horizon for observers on the Prime Meridian and the Antimeridian simultaneously, when it should not be

- The Moon is pointing in the wrong direction on the horizons of the PM and AM. While the Moon will never "tilt" or "rotate" in the Round Earth model, it is possible to look at it upside-down when standing on opposite sides of the earth.

- The Moon is above the Western Horizon for observers on the Prime Meridian and the Antimeridian, when it should be on the Western Horizon for the Prime Meridian and the Eastern Horizon for the Antimeridian

Here is what the Mooncalc shows for the Prime Meridian and the Antimeridian:

IMGs

You've shown 17.58 for both, but the Antemeridian is 12 hours ahead or behind this. This is local time.

If it's 17.58 at Greenwich, and the antemeridian point is 12 hours ahead, then it's not 17.58 there. It's 05:58 on the next day.

You've shown how the Moon looks for Greenwich, and how it looked for Australia 12 hours earlier.

Put in the correct times, and the arrows you've put on the Moon points will point from opposite directions.

You need to account for the time differences, as I did in Reply #22
Title: Re: The Crescent Moon
Post by: QED on August 07, 2018, 03:01:20 PM
While researching this, I found several other inexplicable Round Earth items.

- The Moon is above the horizon for observers on the Prime Meridian and the Antimeridian simultaneously, when it should not be

- The Moon is pointing in the wrong direction on the horizons of the PM and AM. While the Moon will never "tilt" or "rotate" in the Round Earth model, it is possible to look at it upside-down when standing on opposite sides of the earth.

- The Moon is above the Western Horizon for observers on the Prime Meridian and the Antimeridian, when it should be on the Western Horizon for the Prime Meridian and the Eastern Horizon for the Antimeridian

Explanatory image:

(https://i.imgur.com/E8Ogpn6.png)

(https://i.imgur.com/itm8Kfk.png)

Here is what the Mooncalc shows for the Prime Meridian and the Antimeridian:

Prime Meridian

(https://i.imgur.com/pa7oQA7.jpg)

Link: https://www.mooncalc.org/#/0,0,3/2018.08.12/17:58/1/2

Antimeridian

(https://i.imgur.com/IoQQE5r.jpg)

Link: https://www.mooncalc.org/#/0,180,3/2018.08.12/17:58/1/2

Thomas, you have the same time entered for both locations. You do recognize that this is actually comparing them at different times, yes?

Wow...I cannot believe you made such a flimsy error.

This is what you call research? High school students do better "research" than this.

What's wrong with you?
Title: Re: The Crescent Moon
Post by: Tumeni on August 07, 2018, 03:28:15 PM
Do you know what you have not taken into account in your cartoon?

The Sun.

Create a proper scale-model figure which includes the thing that is illuminating the Moon in the first place (that would be the Sun, Thomas), and re-submit.

In addition, whilst he may have indicated the POSITION of the observers, he hasn't made any allowance for their orientation ...
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 07, 2018, 07:03:25 PM
Thomas, you have the same time entered for both locations. You do recognize that this is actually comparing them at different times, yes?

I didn't change the time, I just changed the location. If Mooncalc changed the time, then I wouldn't be surprised. It is an incredibly buggy web application.

Do you know what you have not taken into account in your cartoon?

The Sun.

Create a proper scale-model figure which includes the thing that is illuminating the Moon in the first place (that would be the Sun, Thomas), and re-submit.

In addition, whilst he may have indicated the POSITION of the observers, he hasn't made any allowance for their orientation ...

I've shown that it cannot be the moon that is rotating. The only out is that it is the earth that is shifting.

It doesn't seem that the Mooncalc can reproduce the Moon Tilt Illusion. I will take a look at Stellarium and compare the two.
Title: Re: The Crescent Moon
Post by: Curious Squirrel on August 07, 2018, 07:08:53 PM
Thomas, you have the same time entered for both locations. You do recognize that this is actually comparing them at different times, yes?

I didn't change the time, I just changed the location. If Mooncalc changed the time, then I wouldn't be surprised. It is an incredibly buggy program.
If you change location you need to change the time. Why would it do that for you? That's not a buggy program, that's GIGO. 16:50 in CST is not the same time as 16:50 in GST. You need to change the time manually when you move timezones.
Title: Re: The Crescent Moon
Post by: Tumeni on August 07, 2018, 08:29:52 PM
I didn't change the time, I just changed the location. If Mooncalc changed the time, then I wouldn't be surprised. It is an incredibly buggy web application.

By all means, list all the other bugs that you have found, IF you have found any.

It expects you to enter the LOCAL time for the place you're interested in. Why would anyone want to look at the Moon in Perth, Australia, for a time in London?


I've shown that it cannot be the moon that is rotating.

Did anyone claim that it was?

The only out is that it is the earth that is shifting.

Or it's the orientation of the observers ....

It doesn't seem that the Mooncalc can reproduce the Moon Tilt Illusion.

Did anyone claim that it could?

This thread is about the crescent moon. Moon Tilt Illusion is in another thread....
Title: Re: The Crescent Moon
Post by: model 29 on August 08, 2018, 01:41:51 AM
Model it. Use the Round Earth Distances to explain it.
What is there to model?  If you tilt your head/camera 45 degrees to the right while looking at something (insert distance of your choosing here) away, and then tilt your head/camera 90 degrees to the left while looking at the same object, it will appear to tilt, or rotate if you prefer, in your field of view.
Title: Re: The Crescent Moon
Post by: Tumeni on August 08, 2018, 06:29:33 AM
Model it. Use the Round Earth Distances to explain it.
What is there to model?  If you tilt your head/camera 45 degrees to the right while looking at something (insert distance of your choosing here) away, and then tilt your head/camera 90 degrees to the left while looking at the same object, it will appear to tilt, or rotate if you prefer, in your field of view.



I started down the path of setting this out, step by step, for Tom, but we faltered at the first or second hurdle;


If you were to the rear of all the observers, looking past the Earth toward the Moon, their views would vary, because of the difference in their LATITUDE. The observer at the equator will have the crescent toward the bottom of the Moon, and the observers at 45N or 45S will have it inclined to this aspect by 45 degrees each.

(https://i.imgur.com/lOa8DUh.jpg)

I don't see how that makes much sense. That doesn't use Round Earth Geometry. In fact, it seems to be assuming that the moon is very close to the earth.

.. despite further explanations, Tom seems set to abdicate from this thread.
Title: Re: The Crescent Moon
Post by: Tumeni on August 08, 2018, 07:03:53 AM
I'm Australian and haven't fallen off yet, so what do you say to that


I say you should post a picture of the Moon taken from Australia. Let's compare it with one taken from the Northern Hemisphere.

The thread topic IS the Moon, after all ...
Title: Re: The Crescent Moon
Post by: Lastwave88 on August 08, 2018, 07:57:26 AM
I like to think of this issue this way. If you were in a gymnasium, an indoor basketball court. Two people, one at each end, look up at a dome light in the middle of the ceiling. The two people on a completely flat plane will see an opposite view of the same object.

Just an idea.
Title: Re: The Crescent Moon
Post by: Tumeni on August 09, 2018, 10:38:58 AM
Tom, I set up a dummy Moon and point light source, with a crescent showing on my Moon; I photographed it four different ways, with a rough compass point indicator behind it to show orientation.

I didn't move the light source, the moon, or the paper at any point. I didn't rotate the images in software, simply cropping out background and adding the indicator circles for the compass points.

What do you think I changed?


(https://i.imgur.com/qK3NNpY.jpg)

(https://i.imgur.com/PhsTpDb.jpg)

(https://i.imgur.com/WlDVN1A.jpg)

(https://i.imgur.com/lcfl1wS.jpg)
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 09, 2018, 12:20:03 PM
You just rotated your camera around.

Rotating the camera isn't enough to explain this effect. Consider the situation where the observer is at the equator and looking into the Western Horizon. The moon is approaching from behind the observer and then descending into that  Western horizon. This is a simple scenario, and easily enough to picture. At the equator the moon is passing overhead from behind and setting vertically downwards into the Western horizon.

If you just rotate the camera left and right to simulate the curvature of the earth then as you rotate left or right to Northward or Southward positions, it then seems as if the moon was traveling over the North Pole when you get to 90 degrees N. At 90 degrees S the moon seems to be traveling over the South Pole. At 45 degrees N or S the moon is also traveling too far North.

It is not possible for the moon itself to shift in RET, or for the rotation shifting to be explained or simulated by a rotating camera, but I do think the shifting may be explainable if the illustration in the mooncalc image is adjusting for the presumed tilt of the horizon.

However, I no longer believe that this Mooncalc is an accurate portrayal of the moon. As we saw in the other thread, the Moon Tilt Illusion occurs at all times. Since this calculator never accounts for the Moon Tilt Illusion, it does not seem to be accurate at all.
Title: Re: The Crescent Moon
Post by: Tumeni on August 09, 2018, 12:38:15 PM
Which effect are you talking about? I'm talking about two observers, one at 45N, one at 45S, looking at the Moon at the same time, with each seeing the crescent in different positions, separated by approx 90 degrees. You seem to understand what I'm getting at. You seemed to confirm it with your red arrows on the moon graphics in Reply #23 ... - 90 degrees difference in latitude, 90 degrees difference in the crescent

I'm not talking about the passage of the Moon over time, over the course of a night, or any other period. If both observers look at the same time, we have already seen, from mooncalc, how their views would differ. You agree that if a camera is held in one position, looking at a crescent moon, then moved around its axis, the crescent is shifted by 90 degrees or so. With two observers separated by 90 degrees of latitude, can you see how this shift of the camera applies, assuming both observers keep their cameras upright?
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 09, 2018, 12:45:38 PM
Which effect are you talking about? I'm talking about two observers, one at 45N, one at 45S, looking at the Moon at the same time, with each seeing the crescent in different positions, separated by approx 90 degrees. You seem to understand what I'm getting at. You seemed to confirm it with your red arrows on the moon graphics in Reply #23 ... - 90 degrees difference in latitude, 90 degrees difference in the crescent

I'm not talking about the passage of the Moon over time, over the course of a night, or any other period. If both observers look at the same time, we have already seen, from mooncalc, how their views would differ. You agree that if a camera is held in one position, looking at a crescent moon, then moved around its axis, the crescent is shifted by 90 degrees or so. With two observers separated by 90 degrees of latitude, can you see how this shift of the camera applies, assuming both observers keep their cameras upright?

Think about what I described above. You are at the equator looking at the Western Horizon and the moon is passing by from behind overhead, setting vertically into that horizon.

Code: [Select]
    |
    |
    V
---------
  west

Now you rotate the camera by 90 degrees to simulate what would happen at the North Pole.

Code: [Select]
       |
west   | <---------
       |

Now the moon seems to be passing over the North Pole...

At 45 degrees N or S the moon is also passing overhead too far North or South, if one were to rotate the camera 45 degrees left or right. Rotating the camera is not enough to simulate the curvature of the earth.

I do think that the Mooncalc is trying to simulate the tilt of the earth, however. But I no longer think it is accurate due to ignoring the Moon Tilt Illusion which takes place at all times; so this point of what the calculator shows is moot with me. I am less interested in talking about something that does not take place. I will revert to the Moon Tilt Illusion thread.
Title: Re: The Crescent Moon
Post by: Tumeni on August 09, 2018, 12:57:34 PM
Think about what I described above. You are at the equator looking at the Western Horizon and the moon is passing by from behind overhead.

No, that's not the situation that is being discussed. We're not talking about any movement in the Moon, only observations from different places AT THE SAME TIME. The Moon is at a static point in the sky at this time. Where it has been. or where it is going don't enter into it.


Now you rotate the camera by 90 degrees to simulate what would happen at the North Pole.

Again, not the situation being discussed. We were talking about two or three observers, spanning 45S, equator, and 45N

Now the moon seems to be passing over the North Pole...

We're not concerned with its path, only how its crescent appears to different observers at the same time.

Rotating the camera is not enough to simulate the curvature of the earth.

But you agree that if you have two cameras which are inclined separately to the Moon with a difference of 90 degrees, that the two pictures will have the Moon's crescent differing by 90 degrees?

I do think that the Mooncalc is trying to simulate the tilt of the earth, however. But I no longer think it is accurate due to ignoring the Moon Tilt Illusion which takes place at all times; so this point of what the calculator shows is moot with me.

Like I said earlier, pick a selection of dates and times in advance for your chosen location, print off what mooncalc predicts, and look outside when those dates and times come along, to see if it matches the prediction. Sooner or later, you'll find prediction matches experience.
Title: Re: The Crescent Moon
Post by: Tumeni on August 09, 2018, 01:06:31 PM
I'm in the region of 55N, and here's one of the ball/moon shots that I took. The vertical of the picture is as close as I could get to a true vertical with a hand-held shot. The Moon was above the baseball in my line of sight, and I was standing upright.

Tom, will you accept the above as a starting point, and that I was genuinely looking at the Moon, with my baseball held at arm's length, in the daytime, and in the sunlight?

(https://i.imgur.com/WWneRxo.jpg)
Title: Re: The Crescent Moon
Post by: Tom Bishop on August 09, 2018, 01:06:57 PM
Again, not the situation being discussed. We were talking about two or three observers, spanning 45S, equator, and 45N

If you rotated the camera 45 degrees in the scenario I described above, the moon would seem to be passing over the 45 degree latitude. The Moon is only inclined in its orbit from the equator by a maximum deviation of 5 degrees. Camera rotation does not work to explain 45N or 45S either. The examples at the North and South Pole where the moon seems to be passing over the North or South Poles solidifies this point, and illustrates that rotating the camera is not an illustration of this.

I do think it is trying to simulate earth horizon tilt, but I do not not have faith that the Mooncalc can simulate the moon at all, at this time. It is not possible for the  both the Moon Tilt Illusion that occurs at all times and the Mooncalc illustrations to both be true. Since we have pictures of the Moon Tilt Illusion, and none of the Mooncalc, I will side with that one.

Quote
Tom, will you accept the above as a starting point, and that I was genuinely looking at the Moon, with my baseball held at arm's length, in the daytime, and in the sunlight?

Sure. I don't have any reason to doubt you. If you want to talk about the Moon Tilt Illusion, lets take it to the Moon Tilt Illusion thread.
Title: Re: The Crescent Moon
Post by: Tumeni on August 09, 2018, 01:55:29 PM
Quote
Tom, will you accept the above as a starting point, and that I was genuinely looking at the Moon, with my baseball held at arm's length, in the daytime, and in the sunlight?

Sure. I don't have any reason to doubt you. If you want to talk about the Moon Tilt Illusion, lets take it to the Moon Tilt Illusion thread.

No, nothing to do with the illusion. If we take it for purposes of discussion that the Earth is a globe, and you or I were suspended out in space, behind my viewing position, and by some small chance you could get the whole globe in view, along with a view of little old me viewing the Moon, do you agree it would look something like this? (I seem to have lost some weight in the process, and gained a few hundred miles in height, but ...)

(https://i.imgur.com/wtELVzZ.jpg)
Title: Re: The Crescent Moon
Post by: Tumeni on August 31, 2018, 10:57:45 AM
I made up an artificial Moon which will better illustrate shadows than the baseball previously used;

(https://i.imgur.com/f7SoysR.jpg)

Different day, different month, same result. Artificial Moon held up in sunlight on Earth matches the Moon in the sky. No "perspective effects" involved