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Thank you so much for that Les. I was trying to imaging how you could quantify or measure the night sky. Measure what - light - fair enough. Measure darkness - how?? What baseline do you use? I'm not even going to try and understand how it's done. What an amazing little gadget! It is a pity that there doesn't seem to be a local dealer selling them.
You raise a very valid point about objectivity and honesty in visual reports. It is very easy to fool yourself that you are seeing some faint detail, nebula or whatever, "because it should be there, I've seen it in images". This is particularly the case with objects or features right on the edge of visibility. Cheers and thanks again, Paul.
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