Quote:
Originally Posted by gregbradley
My Nikon D800E has 59% QE and my astro CCD cameras are mostly 60%.
|
Carl Sagan was fond of saying :" extraordinary claims require extraordinary evidence"
59% QE for a bayer-martix covered CMOS chip? Really?
60% for a mono CCD?
At what wavelength?
The very best CCD's are pushing 95% QE
see
http://www.e2v.com/products-and-serv...ccd/qe-curves/
Most (unmodded) DSLR's are useless at H-alpha wavelengths. Plus most CCD's have very low noise amps and are chilled from 30-60 degrees below ambient....and that is the elephant in the room
Just my 2 cents worth
