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Meridianbeobachtungen Des Mondes Und Der Mondsterne

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Meridianbeobachtungen Des Mondes Und Der Mondsterne 237 258 I diankreise wieder aufzunehmen. Als spater Herr Stud. Eklund, Herrn Eklund beobachtet. Auch die friiheren Beobachtun- der wahrend mehrerer Monate die Zeitbestimmungen in sehr gen beruhen in der Regel auf solchen gleichzeitigen Zeit- befriedigender Weise besorgt hatte, auf meine Aufforderung bestimmungen, im Jahre I 882 unter Benutzung der Ephe- sich bereit erklarte, eine ahnliche Beobachtungsreihe auszu- meride der 5 39 Sterne der Astr. Gesellschaft. In Ausnahme- fuhren, iiberliess ich ihm den Meridiankreis und habe von fallen wurde die Kenntniss der Zeit in anderer Weise October an das Passageninstrument von Utzschneider und gewonnen, wie jedesmal aus den Columnen n Zeitsterna und Liebherr zu diesem Zwecke benutzt. Die Uhr von Hauth, BBemerkungent hervorgeht nach der beobachtet wurde, ist im Meridiansaale in der Ausser dem Mondrande sollten noch die Moon-Cul- Nahe des Passageninstrumentes aufgestellt, die Schllge sind minating Stars c des Nautical Almanac beobachtet werden. aber ohne irgend welche Anstrengung auch dern Beobachter Zwei Ma1 wurde jedoch besonderer Umstande halber - am Meridiankreise gut horbar. Die Auge- und Ohr-Methode wie halb bedeckter Hirnmel etc. - von dieser Regel ab- wurde ausschliesslich angewendet. gewichen, indem 1883 Nov. 8 die Mondsterne der Con- Gleichzeitig mit den Beobachtungen des Mondes und naissance des Temps beobachtet und 1883 Dec. 6 die des 1882 Object i Sundell ~ Dreijer :FBden Zeitstern Bemerkungen Sept. 21 GI d Aquilae , Luft schlecht. d Sagittarii 19 KO 47.93 ! - 7 8 Cygni Sept. 12 c" Sagittnrii '9 35 -- 7 d ~(lui~ae' Zeitbestimiiiung yon Dreijer. cr 19 52 51.62 7 @ Cygni . Sept. 24 Aquarii 21 3 14.1 I 7 a Lyrue 2 Aquarii 21 31 32.43 7 CI 21 51 22.74 7 44 Aquarii 22 II 1.07 1 x .4quarii 22 31 43.10 7 Sept. 25 44 Aquarii 22 11 0.90 5 y Pisciuin Wahrscheinlich Wolken. x Aquarii 22 3' 43.07 2 YC Piscium GI 22 50 27.31 1 Sept. a6 c1 23 49 4739 7 y Piscium d Piscium 0 14 35.89 7 x Piscium d Piscium o 42 38.06 7 Oct. 21 E Aquarii 20 41 - 7 L( Equulei Zeitbestinimung von Dreijer. p Aquarii 20 46 - 7 20 Pegasi CI 21 25 - 7 c1 Capricorni 21 38 - 7 19. hquarii 22 10 - 7 Oct. 21 c1 Capricorni 21 38 46.48 7 16 Pegasi 19 Aquarii 22 I0 40.33 7 ao Pegasi CI 22 22 18.66 7 x Aquarii 22 31 42.69 7 9 Aquarii 23 8 16.83 7 239 258 i * 40 - - 1883 Object Donner Eklund Faden Zeitstern Remerkungen - - - ___ Sept. 11 CI 18~46m26!28 - 4 Sagittarii Wolken. Position von Q* des N. A. Sept. 12 CI 19 42 31.83 - 'I Der Stand der Uhr rvurde aus den Be- Capricorni 20 14 29.96 - I2 stimmungen des vorhergehenden und der B.A.C. 7087 '0 27 44.74 - '3 folgenden Tage abgeleitet. Sept. 13 CI '0 39 9.3' - '3 d Aquilae Zeitsterne von Dreijer beobachtet. I 9 Aquarii 21 18 59.78 - '3 7 Aquilae Aquarii ZI 31 35.26 .- '3 8 CYgni - Sept. 14 CI 21 36 8.16 '3 a Ophiuchi Zeitbestimmung von Dreijer. 44 Aquarii 12 11 3.84 - '3 /3 Ophiuchi .- x Aquarii 22 3' 45.12 '3 p Herculis Sept. r6 '3 33 47.8r I I3 21, 25 Pisc. Positionen der Zeitsterne nach N. A. Oct. 10 ex Sagittarii '9 35 53-06 - I1 (t DelphiniE Gute Luft. Kand sehr wenig zitternd. g Sagittarii '9 5' 22.33 22.56 I 1.13 6 Aquarii CI '0 '3 5.37 5.32 11.1 2 (4 Equulei 8 Aquarii 20 53 32.66 32,48 10.13 17 Aquarii 21 3 16.86 '6.75 11.13 Oct. II j' Aluarii 21 3' 35.05 35.17 11.12 8 Aquarii Kand nur wenig zitternd. c1 Capricorn: 21 38 49.58 49.66 11.13 'I Aquarii CI 22 4 0.99 0.96 11.11- 2 Aquarii 5 I Xquarii 22 18 5.01 5.0 I 11.13 x Aquarii 22 31 45.70 45.58 11.12 Oct. 13 23 o 43.16 43.18 11.11 $, 7 Aquarii Mondrand zitternd. x Piscium 23 20 60.08 59.85 11.13 7, R Aquarii I Piscium 23 36 8.55 8.59 11.1 2 Pegasi Oct. I5 cf Pisciuni o 42 41.02 41.07 10.1 I 2, BCeti D Sehr starker Wind. CI o 58 46.08 46.28 I 1.13 o Pisciuin 54 Ceti I 44 43.99 43.94 11.12 9, g, 8.: Pisc. co 11, 6 u. L' E. Nov. Z 21 39 54.04 54.33 11.13 I Aquarii Alles in Wolken. Rand ganz ruhig. Mond- a2 10 43.00 43-18 11.13 fh Pegasi D sterne der Connaissance des 'Temps. 22 15 40.27 40.27 11. 7 A'OV. IC x Pisciuin 23 20 59.85 59.93 10.12 10 Pegasi 1) Mond ganz in Wolken; Rand ruhig. CI 23 29 30.52 30.52 11.13 R) Piscium 19 Piscium 23 40 28.59 28.78 10. 7 1)ec. C 30 Aquarii 21 57 9-94 9.93 11.12 1, R Aquarii Schlechte Bilder ; Mondrand sehr zitternd. 44 Aquarii 22 11 3.14 3.08 I 1.13 d Aquarii Vorangehende Mondsterne des N. A. I 883 CI 22 15 2.61 2.58 I 1.13 c( Androm.E Juli 2 I. x A(luarii 22 31 44.96 44.13 10.13 7 Pegasi E 67 Aquarii 22 37 10.94 10.69 11,13 24 I 258 I 242 I 88 2 i M. 2. Helsingf. I S. I Sept. 2 I I 6h 52'"46f25 I 8h ~4~40!06 -0!63 +0?3 I 221 7 48 2.18 '9 54 1-63 -0.58 +0.35 24l 9 38 21-75 21 52 31.42 -0.83 +o.ot 25 10 33 10.73 22 51 36.98 -1.06 --O.I7 26 ~ I I 28 35.93 23 50 57.82 -0.9 I -0.02 Oct. ZI 1 7 16 12.41 21 26 - .- - 221 22 27.15 -0.7 8 I 8 19 6.03 23 --+o.r 1883 M. 2. Helsingf Donner Eklund D. D. E. : Rand I Septa I1 7 25 57.54 18 47 33-74 - -0.78 - +O.IZ - ;I - 12 8 17 58.36 I9 43 39.65 - -0.90 0.00 -!I 20 40 17-33 - -0.94 - -0.04 - !Ii - - - 21 37 16-33 -1.17 -0.07 iI 23 32 38.93 - --1.41 - -0.49 - i 11 20 I4 12.33 I 2.28 -0.8 2 -0.87 -1-0.08 +0.03 I 22 5 8.62 8-39 -0.98 -1.11 -0.09 -0.31 I I 13 I 51.45 51-41 -1.24 -1.22 -0.33 -0.31 , I 0 59 56.50 56.70 -1.09 -0.89 --o,14 +0.06 I 21 41 0.29 0.58 -0.9 I -0.68 -0.07 +0.22 I 23 30 38.22 38.1I -0.94 -0.95 I 22 16 8.18 8.15 -1.06 -1.09 -0.18-0*01 I -O.O1-0.21 I I Rand I. dieser zweiten Tafel angewendeten Grossen sind der Con- Fehler der Mondephemeride nach Anbringung naissance des Temps entnommen. Durch Anbringung des dkr Newcomb'schen Correction aus den obigen Werthes fir die Durchgangszeit des Mondhalbmessers, wie Beobacht ungen abgeleitet: diese in der stlindlichen Ephemeride angegeben ist, wurden die Rectascensionen des Mondmittelpunktes erhalten, welche I 1 S. u. Dr. , I). j E. somit auf den Positionen der Zeitsterne beruhen. Diese _I__ -, ___- Rectascensionen sind alsdann rnit denjenigen Werthen ver- Anzahl der Beob. I1 7 glichen, welche aus derselben Ephemeride rnit HUlfe der Beob. Corr. im Mittel +0!123 1 -do85 -0?079 Columne >Longitude des lieux oh la lune passe au mtridieaa Wahrsch. Fehler f0.046 +o.o27 \ f0.052 berechnet wurden, iind mit denjenigen, die hieraus durch .4nbringung der Newcomb'schen Correction hervorgingen, Die noch ubrig bleibenden Abweichungen von diesen unter der Annahme, dass die Werthe dieser nach der Tafel Werthen lassen einen Fehler von kurzer Periode kaum ver- der Connaissance fur den Pariser Mittag gelten. kennen ; die Beobachtungen sind jedoch zu wenig zahlreich, Da nur eine Beobachtung des zweiten Randes vor- um darauf Schliisse zu bauen. kammt, schliesse ich diese aus, und finde so die folgenden Helsingfors 1884 Febr. 6. Fehler als Mittelwerthe ails den Reobachtungen von A~ldrrsBanner. Steiwluedeckiingen wid Jupitersmonde, beobachtet zu Gohlis hei Leipzig. 9 = 51~~1'35:o2 = 49"29?65 ostl. von Greenw. Die Beobachtungen sind init einem Steinheil'schen Beobachtungen der Jupitersmonde wurde der Uhrstand Refractor von I OSmm Oeffnung rnit I zofacher Vergosserung interpolirt. gemacht, niir bei der Sternbedeckung am 3. Miirz I 88 I Die Erscheinungen der Jupitersmonde sind rnit den- wurde ein Fernrohr von 68"" Oeffnung rnit gofacher Ver- selben Abkiirzungen bezeichnet, wie im Nautical Almanac, grosserung angewandt. Die angegebene Zeit ist mittlere Orts- rnit dessen Ephemeride auch die Beobxhtungen verglichen zeit, die Zeitbestimmungen geschahen in der Regel im un- sind. Es ist stets der Moment des ersten resp. letzten Licht- - mittelbaren Anschluss an die Beobachtungen, nur bei einigen schimmers notirt. .
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