I think that part of the reason I struggle when communicating with Manuel is that he's a kinetic learner. Or aural. While I'm very visual. Still, I sense he does not have a good sense of the size of things in space. Neither did I, when I started! It wasn't until I made rings—and later overlays—for my star charts that it really hit home how small the field of view is for a telescope, especially one in the 2000 mm range! With Manuel, there's the factor of the camera chip and pixel sizes. I think he does not fully appreciate that an SCT is really not the right telescope for imaging the Andromeda galaxy. So, at the risk of not connecting fully, not communicating most effectively, I made a drawing.
So to be most illuminating, I knew it would be very important to have scaled objects. I included the Moon, Jupiter (at its maximum size during opposition), and The Great Galaxy. Then I calculated the frame sizes for the DFK (planetary) and QHY (deep sky) cameras. For his three telescopes. And that he has a focal reducer for an SCT, I added these two additional frame sizes for each camera!
This clearly shows that anything except the QHY on the 80mm will chop off the galaxy. This clearly shows why he needed so many panels for his Moon mosaic...
I hope it helps.
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The drawing above is incorrect! Revised version posted online on March 21.
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