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Pixel size versus snr | by Astrocatou
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Pixel size versus snr

Mulling over a very tempting 13 micron pixel camera.

Chip size is about the same as my ST10...each pixel has 3.5 times the area of my ST10...

Essentially its "superbinning"...with SNR correspondingly higher.

 

This image (above) is binned ...(900 second exposures...)(3)

ST10 on a f/4.7 1200mm fl scope...so they are essentially 13.5 micron pixels.

image scale=2.1 as/pixel

 

A series of unbinned 1200 second exposures did not give as good a result...

And yet I am aware of the theories about over/undersampling,seeing issues,Nyquist limit etc etc...

I am told 13 micron pixels at 1300mm fl is a bad idea..

Any thoughts appreciated

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Taken on February 5, 2012