Quote:
Originally Posted by Peter Ward
However, the only accurate way of testing "off chip" noise variations across manufacturers would be to place the same chip into differing heads, then measure the result.
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Far too much effort - Not to mention voiding the warranty on two or three $10K+ CCDs. Better option is to take good calibration frames within 1°c of the light frames, then noise is non-existent anyway.
I know with both my ST-10XEi and ST-9E, noise in a 5 minute frame was considerably high.. however after applying a few dark frames taken within 1°c of the light frames, noise disappeared...
Everyone likes to stand up and argue the positives of their CCD over someone elses, this is all good and fair, who wouldnt want to defend the reason they bought a $10k AUD camera? At the end of the day.. Marcus, Tom Davis and Peter both take sensational images with their STL-11000M's. Mike S. Takes sensational images with his FLI PL-110002M, Greg takes sensational images with his FLI ML-8300 and Apogee U16M, Fred and Steven take sensational shots with their ST-10XME's, Ejcruz (Eddie) takes sensational shots with his QHY9, and many users (Clive, Doug, Louie etc.) take sensational images with their QHY8's
At the end of the day. CCD brand, and chip (both model and individual unit) make little difference. Its more about experience both in capture, calibration and processing. Good mount and optics always play a big part too...
Lets not turn this into a "Who's is better (or dare I say, Bigger) than who's... Rather, lets all kick back and rejoyce in the fact that there are many fantastic options available today for CCD imaging ranging in price from a meager $1800Au right the way through to whatever amount of money you're willling to spend..
Some have this option, some have that option. at the end of the day, as stated above, in the right hands, any good CCD can take great images in the right hands.
Paul's QSI will give great results, as he's made sure he has a good mount, good optics, and a great understanding of capture, guiding, processing behind him..
Thats enough from me, But I hope for once, everyone can agree on something...
Alex.