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Old 24-08-2020, 08:29 PM
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Sunfish (Ray)
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Maybe you better explain that in detail as other quote much different figures. I think my Cmos cameras are about the same pixel size

https://www.cloudynights.com/topic/6...g-image-scale/

Quote:
Originally Posted by Merlin66 View Post
I’m little surprised that the discussion doesn’t raise the arcsec/ pixel for the guide system vs the arcsec/ pixel of the imaging camera.
PHD is very good and claims it can give effective guiding when the ratio between the two is around 5 to 10 times ie the guide arcsec/ pixel is x10 the imaging scale.
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