Quote:
Originally Posted by Atmos
I make my decision as to whether I continue imaging early on in the night depending on how the auto focus is coming along but also how MaximDL deems the FWHM. When I do my proper measurements though it's all done in PI and done manually where I select at least a dozen stars. I know my pixel scale (0.4") and if a bunch of stars measure 3 pixels then I know I have 1.2" seeing.
Here are three crops. NGC 288 measures at 1.48" first off. Next is NGC 6752, a forgotten globular near NGC 253, it measures down to 1.42". Lastly is a crop of Eta Carina, actually cannot remember exactly what it was but it wasn't as low as those globulars; might have been around 1.8-1.9".
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Fair enough Colin.
As a standard candle.
Your
Finger of God in Eta Carinae is amazing.
That certainly looks better than 2.8 arc seconds
which is all I ever got on that.
Your make my pics look blurry now - LOL
cheers
Allan