John R Pierce wrote:
> the Clear Sky Clock--errr-Chart predicts BAD seeing throughout the
> central california area, improving to merely POOR around 3am at my
> club's Bonny Doon site. Ah, correction, fremont peak improves from
> BAD to POOR around 9 pm, and may hit 'average' at 3am, but its an
> island in a sea of crappy seeing.
> http://cleardarksky.com/f.php?Mn=astronomy&p=3S1812Fremont_CA
>
> fyi, I'm still going up to bonny doon, wishful thinking and all that.
> at least its supposed to be clear, with OK transparency.
actually, once the hazy crud blew over by about 7:30 or 8pm, it was
surprisingly good at bonny doon. 8 or so astronomers showed up, we had a
few locals visit, who were quite interested (I showed the Saturn and
Orion)... The western half of the sky was quite dark and clear down
to about 25 degrees elevation, and the seeing really wasn't that bad.
this was offset by it being cold and windy.
I estimated based on the Orion charts at http://www.globe.gov/GaN/ that
it was 5.5 to 6th magnitude seeing naked eye at about 9:30pm, of course,
Orion was in the best part of the sky about then.
I noted that the San Jose light dome extended almost to the Pleiades
(again, at about 9pm), this seemed a bit more than better nights.
I left about 10pm as I was tired, and getting cold, and am still
recovering from the lung crud i've had over the past couple weeks
--
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Received on Sun Mar 02 01:39:42 2008