[Peter Ward]

Originally Posted by CometGuy

http://www.astro-pics.com/31hm.htm (to me the stars at the corners look very average)
...........

Terry

I'd come to the same conclusion some time ago: very few systems are designed to fully cover the field of a KAF16803.

Bottom right of the image above is not great....though I must say closer on axis the result is very impressive.

The only scope I have used that goes the distance, then some is the AP155 + 4" field flattner...no surprises there as it was originally designed to handle 6x7 cm film.