Quote:
Originally Posted by Stephane
Hi David, you might consider binning 2x2. Binning improves your signal to noise ratio at the cost of resolution. However, if after binning you’re resolution is still less than half of your seeing, you haven’t actually sacrificed any resolution.
Either way, this image is superb!
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Thanks Stephane- yes this is something I’m in the process of trialling to see what works best. The complicated thing is that the data changes with the sky conditions / guiding so it’s hard to make a hard and fast rule. I’ve received some recommendations to bin between 1.5-3x in post processing depending on the data. According to astronomy.tools the ideal pixel size for Good Seeing (1-2" FWHM) seeing is: 0.33 - 1" / pixel, so not far off at all. I’m interested as to how you decide or do you just do the same thing every time?
For example the last 2 nights I’ve been playing round with the c14 at native f11 fl3900: Monday was some of the best guiding I’ve ever done averaging between 0.35-0.45rms. And then last night it was double that! Obviously the detail will be different.
I might do a side-by-side comparison of this m104 and see what happens…
Cheers