Quote:
Originally Posted by terrynz
The EdgeHD's are designed to have a very flat field with very LOW vignetting at f/10 (HD8 and HD11) and F11 for the HD14.
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I am a little confused about these scopes. All the advertising I have read on these edge scopes as well as many user posts claim a flat field but when I looked them up on the Celestron website their claim is:
The EdgeHD optics produce a focal plane more than 3 times flatter than the standard equivalent SCT telescope with diffraction limited stars across the entire Nikon D3 or Canon 5D field of view!
I guess what they are saying here is the edge series has 1/3 the curvature of a standard SCT (i.e. not flat at all). Has anyone put a big chip to the test on one of these yet???
Mark