Hi Gary,
Do you take SQM meter readings of your home sky? I’d be interested to know what you think is an average and good night from your location.
I consider my sky to be pretty bad living in a SE Essex city location next to a regional airport. Generally, I get a SQM reading of about 19.0 on a reasonable night at about 3am, the darkest part of the night. I really good night can be SQM 19.3. I have moved my main instrument out to Spain to do most of my comet observations, but before it went out there I could still image mag 18.5 comets even through my bright sky.
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