It’s a tricky business isn’t it Glen. Interestingly last night looked great, but my choice of gear was probably a little on the hopeful side lol. Looking west as I was packing up the stars were twinkling heavily. It was still an opportunity to learn for me so wasn’t a waste and I admit to being nice and cosy in my observatory! One thing is certain, if you don’t set up you absolutely won’t be observing - which was me the night before.
PS I found your explanation of FWHM really helpful!
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