[Chaos-l] Observing session at Oxford site Tonight!
joncst at earthlink.net
Fri Dec 2 08:40:03 EST 2005
Hi all. According to the web page, tonight is the December observing
session at the Oxford site. The sky-clock predicts cloudless skies
until 10:00ish, but with decreasing transparency and increasing seeing
as the night goes on. The Weather Underground:
predicts much the same, with temperatures in the low thirties, but no
dew or frost.
The first half of the night will probably be one of those extraordinary
winter nights which are so good for deep-sky observing. The second
half will probably be increasingly good for planetary observing, if
Mars is still close enough to see detail.
The web page says the start time is 6:00, but i've always been a bit
confused as to what that exactly means: whether that's the time we
arrive at the East Chapel Hill High School Bus Lot (ECHHSBL), the time
we leave the ECHHSBL, or the time we arrive at the observing site. If
the latter, i just can't do it. If the former, i could probably make
it, but it would be somewhat difficult. The footnote on the observing
session page says "* These times were chosen to be about 15 to 40
minutes after sunset. They are intended to be the times when everyone
gets to ECHHS for car-pooling". My plan at this time is to _leave_ the
ECHHSBL at 6:30. That would get us to the site at around 7:30, and
give us about 2 1/2 hours of very good observing.
Just a quick reminder that this kind of weather feels much colder when
you're relatively inactive, so dress in layers, wear a "real" hat (30%
of your body heat and all that), and pay special attention to your
feet. In my experience, once your feet get cold during observing, you
can never get them warm again.
Looking forward to a good session. Could we have a show of hands for
people interested in going tonight?
Jon Stewart-Taylor: jcst at tripod.net
Chapel Hill Astronomy: http://www.rtpnet.org/chaos/
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