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In the evening the weather cleared.

But the temperature fell sharply.
At the beginning of observation it was 9F, in the end 8F.
pressure=30.32.
Sextant was brought out 1/2 before the observation.
It is interesting that this affected IC very much.
At noon I measured IC with the Sun, very carefully, and obtained
consistent result of -0'4. I did not check my termometer, but I believe it
was about 40F or 50F, and I was standing inside my room with open
balcony door.

During the night observation, when checked with stars many times,
it was between -1'1 and -1'4 with 5 checks with different stars.

So I used IC= -1'2 when reducing.
It never changed so much on my memory, but also I never observed in
such cold weather:-) I even had to use glowes and hat, and go inside
after each shot (leaving the sextant outside, of course).

Moon-Jupiter, Jan 22(GMT) Far limb:

GMT 3:02:50, 1d6'9 error 0'7
GMT 3:08:50, 1d6'0 error 0'1
GMT 3:18:40, 1d5'1 error -0'2
GMT 3:42:30, 1d4'4 error -0'1
GMT 4:06:35, 1d5'  error -0'2

Near Limb
GMT 3:53:30, 34'4 error -0'4
GMT 4:04:40, 35'  error -0'2

P.S. Lafayette, IN airport weather station gave completely wrong
temperature of 52 F. While my termometer showed 8F, and I felt it with
my skin and even with my bones:-) And this was confirmed by
Wunderground.com weather
service.

Alex.

   

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