Quote:
Originally Posted by gregbradley
Ah that looks nicer Roger. Much smoother with some nice Signal to Noise ratio. Are these longer subs?
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Yeap, the previous images were mainly 180s and 300s exposures this is 600s. As you say, there is a noticable difference. And it was dead easy providing there's a guide star, but not havinga guide star did rule out my first two choices in Fornax
Quote:
Originally Posted by gregbradley
Do you use bloom rejection in CCDstack or perhaps median combine with some dither between subs?
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The median with dither is interesting. All the subs are dithered so median may well help, I will try it. I did use CCD Stack (have now purchased a license, yay), and did use bloom rejection but I need to tinker with values it seems. I've already taken it down a lot from it's default of 45000 to 35000 but seems I need it to be even stronger rejection.