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From: Bruce Hamilton
Date: 2009 Feb 19, 22:54 -0800
From: Bruce Hamilton
Date: 2009 Feb 19, 22:54 -0800
Inspired by an industrious Chief Mate stuck at anchor several thousand miles away (I'll bet the ship is spotless), and having a clear beautiful night here, I took the following shots with my A-12. The observant might note the lack of odd numbers at the end of the minutes, but it seems to work out that way. Index error 0 Assumed to be zero until I rent a theodolite. Height of eye n/a At what height does one have to worry about height of eye with a bubble sextant? I shall consult the air tables before I take this thing up in a plane, Temperature 2 deg C Pressure 1024 mb Time Z-8 AP 49d 16.0m N 123 07.0m W Sirius 20:29:42 23d 42.0m Betelgeuse 20:35 :22 47d 42.0m Saturn 21:27 :40 22d 34.0m Alkaid 21:42 :51 32d 52.0m Mirfak 21: 52 :11 49d 52.0m Arcturus 21 :56: 50 09d 42.0 m Still no sign of comet Lulin, but it is still only at an altitude of 12 degrees and not very bight. I can see Arcturus which is at the same Alt, but no comet. I might have to get out of the city to get a look. I lost the bid on an actual Bygrave on E-bay, but 400 pounds UK was a bit crazy. I'm happily back to pasting my model one and just need some laser printer transparency material to finish the scale. Bruce Vancouver --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
