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SBIG ST-2000XCM - better pixel size over the DSI III and my images show it "Pixel Size: 7.4 x 7.4 microns "
DSI III 6.5x.6.5 microns
So, why do you find the ST at the larger pixel size to be better? I am curious.
Blueman

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Blueman,

Notice he said "for me" the pixel size was better. The choice of a camera for a 400 mm scope is quite different than the choice of a camera for a 4000 mm focal length scope. 6.45u pixels may well be oversampling is sky conditions worse than 7.4u pixels would be for his current scope. Thus, he'd be wasting pixels, the # of photons hitting each well would be lower and thus pushing the signal down closer to the read noise, etc.

Craig

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Stark Labs Astrophotography software

Borg 101 ED f/4, CPC 1100 XLT, and too many cameras to mention

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