Quote:
Originally Posted by PRejto
Yes, Roland tested the QUAD4 on the TEC160 and TEC180 as well. No doubt it's a great product. There will be one at AIC that I plan to inspect.
Still, I'm not exactly seeing the point of using a reducer ony to couple it together with a small pix camera. Why not just use a larger pix camera at f7? What, besides a flat field, would be the advantage? I don't think the scope would be any faster. My guess is the larger pix camera would win if the resolution is about the same.
Peter
|
The 4.5 micron 694 pixels gives .98 arc sec/pixel on the 180 with the reducer which is the magic 1 arc sec/pixel formula. But yes per Ray's sensitivity thread the extra QE of the 694 may be secondary to the pixel size which was a squared in his formula. Larger pixels don't seem to have a lot of downside with those 2 scopes or any smaller refractor for that matter.
Certainly more robust for the stars.
Greg.