Quote:
Originally Posted by gregbradley
Also to show the comparison and validate FLI's low noise cameras a dark at -35C 1x1 10 minutes from my Microline8300.
I did exactly the same processing (autolevels only in PS and saved as jpeg no compression) as I did for the dark from the STL11.
http://www.pbase.com/image/110093020
It seems almost identical to Mike's Proline 11002 dark. The FLI electronics/firmware account for a large difference.
My Apogee camera is also very noise free although not quite as noise free as the FLI.
Also I can get -35C all year round. In winter I imagine the camera would go to -45 to -50C possibly lower. It seems to do -60C below ambient.
As you can see there is more to camera manufacturer choice than simply the same chip.
Greg. |
Heres a 10 minute dark from the upcomming QHY-11, its a raw FIT file so be carefull its big
http://www.qhyccd.com/QHY11/10min%20dark.fit and temp was only -20deg .
I'm not defending SBIG or anyone else here, just saying cooling counts the most. Here is the 8300 10 minute dark as well
http://qhyccd.com/QHY9/dark%20frame%20600sec%202.rar . The temperature was 0 deg. This ccd is very low noise to start with, so out of the box, any 8300 camera will aready be a mile ahead. I expect SBIG to produce similar if not better darks as well now.
Theo