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Disappointing


Dave_S

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Ok, a result from last night's test runs.

 

An hour on M1 (15 x 240s).

 

A massive crop from the original, as M1 is a very small object on the 294c sensor, at 644mm focal length.

 

Is it me, is all of the image data from this CMOS camera, or perhaps all of them,  compressed into a very narrow part of the Histogram at the black end of the scale. Unfortunately, I don't have any image FITS data from my CCD days to compare it with, only a few jpeg copies of some of the old ccd images.1576117661_M1lightroomproc..thumb.jpg.f3461beb26e2c3fdefe13d6adf605334.jpg

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From what you describe, the histogram is normal. I find if you aim to get a broader histogram with longer exposures or higher gain you are almost always clipping the bright stars or LP wipes out detail. CMOS helps with that due to the readout noise being so low. 

 

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