If it's just that easy, go do it yourself. We look forward to your results.
You wouldn't believe me! The only way for you to know is to do it yourself. Because you are the ones believing in the conspiracy, I don't believe in the conspiracy so I am happy to look at the photos from other people who have done this.
I'm not trying to be argumentative but that's my perspective, if you're willing to believe photos from other who have done this, I'm happy to discuss over these photos, But only if you accept them as non-edited. If you won't accept this then you have to take the photos for yourself.
Even if you showed them pictures, it wouldn't be good enough for them. The curvature will be ambiguous.
I'm still not sure why the existence of satellites isn't proof enough for them. They are visible all over the earth, their altitudes are verifiable from the ground, and under most circumstances, their position and orbit can be defined with only six
orbital elements, which refer to elliptical
Kepler orbits, and which can be applied to moons and planets, including our own. Not once in that process do you have to consult aether current charts or whatever. Maybe the DIY should be "find a satellite and track it, then find and provide its Two Line Element set."