while we're talking entry cost, what camera would be appropriate to pair with such a scope that would give an appropriate image scale?
Using a 0.7x field corrector with a 16803 chip still gives an image scale of 0.83 (borderline...?) At the native FL would you need to use something like a e2v CCD 42-40, which with 13.5 micron pixels still only gives an image scale of 0.87. That's a heck of a lot of camera.
