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What's the seeing at your observatory?

Started by JJM, 01/16/2010 10:32AM
Posted 01/16/2010 10:32AM Opening Post
One of the things we can't control is the weather, and when we do have a clear, transparent night, seeing moves to the top of the list. So what is the average seeing at your permanent observatory? Are there significant seasonal variations?

Here is the Pickering scale (1-10) for reference:

I live in a valley about 20 miles from the Colorado/Utah border and the average seeing here is 3-4 on the Pickering scale.

Jim McSheehy
Posted 01/19/2010 04:06PM #1
Seeing is usually 7+ in South Florida... 8)

Ivan Gastaldo 8)
Coconut Creek, FL

Ivan's Observatory
Lat 26N 16' 48" Long 80W 10' 48"
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CCD Imaging and Processing/Deep Sky - Moderator
I like to complain about everything - Moderator
Posted 01/21/2010 09:29AM #2
For my location in Northern Virginia: average is 5, tops is 7. I have never seen 8, 9 ,10 in the 6 years since the observatory opened. I think the seeing is getting worse over the years. Transparency certainly is getting worse.

Cheers anyway,

Bob Schnitzer
Grenville Base Observatory - Haymarket, VA
16" f18 Royce Conical Dall-Kirkham
10" f16 Parks/Coulter/Novak/Cave Classical Cassegrain
127mm Orion Starmax Mak-Cas
80mm f15 Meade refractor
40mm Tasco variable power tabletop refractor