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[AZ-Observing] Re: Flagstaff 2002 nighttime cloudiness
- From: Tom Polakis <polakis@xxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Tue, 07 Jan 2003 17:33:56 -0700
At 05:24 PM 1/7/03 -0700, you wrote:
>>> Why all the goose eggs [in July], yet the most spectroscopics...
>
> A 'spectroscopic' night is one where there's thin cirrus but
>no cloud-free hours meeting the 3-hour minimum. If you think of it in
>terms of deep-sky observing, those are just plain cloudy nights, and
>don't add to the tally of clear hours/nights.
Most observers on this list would be perfectly happy with what Brian calls
"partial," so I add photometric and partial to get what is recognized as
clear. Even last Saturday may have ranked as a partial night on the
desert, but that might be generous.
Tom
---
Tom Polakis
Tempe, AZ
Arizona Sky Pages
http://www.psiaz.com/polakis/
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