FreeLists / az-observing / [AZ-Observing] SQM

[Stan Gorodenski <stan_gorodenski@xxxxxxxxxxxxx>]

I just received my SQM today. I just went out, 9:15pm, to take a reading 
at the Blue Hills Observatory in Dewey. I got a reading of 21.06 visual 
magnitude per square arc second. This seems to be too high, i.e., too 
dark, but I do not know how this square arc second measure compares to 
what the eye sees. I assume it indicates a  light polluted sky to a 
degree because the reading was acquired in less than 10 seconds, but the 
instructions say it can take up to a minute to get a reading in a very 
dark sky.

Also, the instructions say it is supposed to beep every second while it 
is acquiring the reading. Mine doesn't beep. It has a faint tick every 
second. Is this normal?
Stan
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