Quote:
Originally Posted by Paul Haese
I have been guiding at 2x2 so my image scale without the 0.73 reduction is 1.25 arcsecs per pixel. With the reduction it is 1.72 arcsecs per pixel. I wonder if binning at 3x3 will have a positive impact. Is this what you are thinking Rolf? I would be at 2.58. Not sure if that would work.
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Yes that's what I mean. From memory I might actually be guiding binned 3x3 already at f/4, but I'll have to check that next time I'm imaging. If that's the case I think you can safely bin at least 3x3 or even more when you are at f/8. Guiding is using sub-pixel accuracy anyway so should be fine. Worth a try - and if it doesn't make your guiding worse at least you'll have brighter guide stars.