|
|
From: Alexandre Eremenko (no email)
Date: Sat May 28 2005 - 07:23:25 EDT
I don't really know what exactly they adjusted
in my SNO in Freiberg but the sextant seems to work OK.
Here are the first test results.
It was Sun at low altitude, but if the good weather persists
I will go out to do star distances this evening.
May 26, index, 7 obs. of the Sun
On the arc: 31' (standard dev=0.0')
Off the arc: 32.13' (standard dev=0.1')
Sum 63.13' (Almanach: 63.2') IC=+0.565, rounded to +0.6'.
May 27, Sun LL art horizon (plate of water), watch -1 sec.
Coordinates from Internet: 10d08.8'E, 54d19.7'N
GMT by watch: Sextant reading:
5:25:29 36d27.4'
5:27:35 37d03.1'
5:29:10 37d31.1'
Aver: 5:27:25 37d00.5'
Corrected:5:27:24 37d01.1'
Divided by 2 and LL corr: 18d43.8' (corrected observed alt)
Computed alt (by hand w Casio): 18d43.8'. Error: 0.0'
May 27, Sun LL art horizon (plate of sunflower oil), watch -1 sec.
IC=+0.6. Same place.
GMT by watch: Sextant reading:
6:15:07 51d01.3'
6:17:16 51d39.3'
6:18:30 52d00.8'
6:21:00 52d44.0'
Averages: 6:17:58 51d51.35'
Corrected:6:17:57 51d52'
Divided by 2 and LL corr: 26d10' (corrected observed alt)
Computed alt (by hand w Casio): 26d09.96'. Error: 0.0'
The certificate for these angles reads:
30 40 50 60
+10" +6" -1" +4"
and I did not make the corresponding correction,
because they would not influence the result anyway.
Alex.
|