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More CMOS galaxy bashing

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Well... its been a good few days for AP eh?... apart from it not really getting dark until 10.30pm! So i did this over a couple of nights to see if the results from the last run were a fluke or not.

I think for this image you will have to ignore the odd star shapes - thats my fault! I was just to lazy to recalibrate PHD so there was a bit of elongation in RA. Even at this short(ish) focal length, its still possible to get punished for sloppy work as the size of the pixels will show up any shortcomings in guiding or PA.

So 94 subs later, I've put this one together. Calibration worked out ok, but I think to really make it shine it needs more subs. For all the read noise and QE advantages of CMOS, youre still going to need roughly the same overall exposure required as you would need for a good CCD version....possibly 5 hours+, as there are no free lunches in this game! :)


94x120s (UV/IR cut)

ASI178MM Cool, 130pds, NEQ6

Setpoint -25


Thanks for looking! :)




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