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Old 04-07-2005, 09:48 PM
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asimov (John)
Planet photographer

asimov is offline
 
Join Date: May 2005
Location: Bundaberg
Posts: 8,819
'seeing' conditions

Here's something that Iv'e often thought about but not discussed/mentioned with anyone..

Let me give you 2 examples:
1 One night I was outside viewing, it was a good night for viewing, not a breath of wind. But the stars were twinkling a LOT which supposedly means, or defined as bad 'seeing' conditions, yes? Sure enough, terrible views threw the scope.

2 On another occasion, outside viewing, identical conditions to the 1st night. EXCEPT there was a gentle breeze blowing. Again, stars twinkling a LOT. The scope was moving about a bit but the views threw the scope....Very good!

So now, In order to be able to tell how the 'seeing' is, (from my 1st hand experiences) with the stars twinkling a lot, as long as there is a gentle breeze blowing, it's going to be BETTER 'seeing' than with no breeze. (I'm not saying perfect here!)

Naturally with no breeze & no star twinkle: This is the best conditions, but as we all know, that's a rare occurrence.

Is this common knowledge to most astronomers? ( It could be I'm "out of touch" with some things astronomically) Or is this 'phenomenon' perhaps confined to this particular area where I live?

Your thought appreciated.

Thanks.
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