Hi Paul,
Quote:
Originally Posted by Paul Haese
Hey Les, done similar things at my Clayton house. SQM reading of 21.5-6 on regular basis. I have had a DIM measurement done there too and it came up with 1 arc second on average but peaks as good as 0.70 arc seconds. The readings were taken on a night I thought were less than average.
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Well I'd have to say you're a lucky man Paul. If I had readings like that in my backyard I'd be out there more often. I have to drive almost an hour to get what you have out the back door! Re the seeing -- well that partially explains why your planetary images are so damned good.
The rest of course is practise, patience, technique, good gear, good operator -- but that seeing sure gives you a nice head-start. East of the Great Dividing Range around Sydney the seeing is rarely at 0.7". 1.5-2" is the norm and better than 1" is uncommon. I could count on both hands the number of occasions in the last 20 years it had been at 0.5" while I've been observing.
Best,
Les D