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FW: 05-11 raw lunar data
From: Doug Royer
Date: 2003 May 12, 12:39 -0700
From: Doug Royer
Date: 2003 May 12, 12:39 -0700
> -----Original Message----- > From: Royer, Doug > Sent: Monday, May 12, 2003 12:39 > To: 'navigation-l@listserv.webkahuna,com' > Subject: 05-11 raw lunar data > > High fog prevented any attempt on 05-10 even though the Moon could be > seen.Even useing the polarizing shade on the sextant the edges of the > bodies were fuzzy.I learned one important lesson during this.Don't attempt > it when fatigued.I have some confidence in the Moon-Jupiter distances but > fatigue and vessel movement reduces my confidence in the Moon-Spica > distances.I haven't had a chance to work the calculations of the distances > yet but will in the next day.Here is the raw data of the observations. > At the top of each hours attempts I took observations of the 2 bodies to > be used in the distance measurement and reduced them to get a 2 LOP pos to > check against the GPS pos.I had to backsight Jupiter's altitudes because > the island blocked the horizon.All Moon hs are L.L.In the Moon-Jupiter > distances the Moon's S.D. will be added.In the Moon-Spica distances the > S.D. will be subtracted.Moon's H.P. is 59.6' for Jupiter shots and 59.7' > for Spica.All times are zt taken from a hack and stop-watch.I cheated and > set the watch 05-10 and it's decay is -0.2 sec. per day.Ic = +0.1', Ht. = > 11 ft., 52*F, 29.25 in Hg > 2000 + 2200 hrs. gps pos. = 34*04.7'N 120*23.3'W > 2000 2 lop = 34*04.9'N 120*22.8'W > 2200 2 lop = 34*03.2'N 120*22.2'W > alts. > 201106 Moon hs = 55*50.3' > 201214 Jup. Bhs=116*43.1' hs = 63*16.9' > distances > 201600 44*51.0 > 201900 44*51.6' > 202053 44*53.2' > 202309 44*55.6' > 202420 44*56.4' > 202722 44*57.6' > alts > 202916 Jup. Bhs=119*51.9' hs = 60*08.1' > 203019 Moon hs = 57*59.8' > 220944 Moon hs = 60*08.2' > 221040 Spica hs = 42*48.7' > distances > 223402 28*36.8' > 223539 28*36.4' > 223654 28*35.2' > 223814 28*33.6' > 223923 28*35.0' > 224100 28*33.4' > alts > 224113 Spica hs = 44*21.9' > 224222 Moon hs = 57*12.8' > I was doing this alone and rushing to measure and record the angles and > mistakes were made especially on the Spica observations. > > >