APPENDIX. 



Ill 



Observations of Jupiter s Satellites at Benares in 1823 24. 



Day. I Satellite Observed. 



Mean time at 

 Benares, 





1 





Hat. 



Immersion 



second 



Immersion 



first 



Emersion 



third 



Immersion 



first 



Immersion 



second 



Immersion 



first 



Immersion 



third 



Immersion 



first 



Immersion 



second 



Immersion 



first 



Immersion 



first 



Immersion 



first 



Immersion 



first 



Immersion 



second 



Immersion 



first 



Immersion 



first 



Immersion 



second 



Emersion 



first 



Emersion 



second 



Emersion 



third 



Emersion 



first 



Emersion 



second 



Emersion 



third 



Emersion 



first 



Emersion 



first 



Emersion 



second 



Emersion 



first 



Emersion 



first 



Emersion 



first 



Emersion 



first 



Emersion 



second 



Emersion 



first 



Emersion 



second 



Emersion 



third 



Emersion 



first 



Emersion 



second 



Long, deduced 

 from the Nau- 

 tical Almanac. 



Long, deduced 

 from the Con 

 noissance des 

 Terns. 



Long, by com- 

 parison with 

 Madras Obs. 



Remarks. 



1823 



21 Nov. 



23 



28 



30 



5 



7 



12 

 14 

 16 



21 

 23 



30 



10 

 12 



13 

 15 

 37 

 22 

 24 

 29 



7 

 14 

 10 

 14 

 31 



9 

 15 



Dec. 



Jan. 



Feb. 



Mar. 



Apr. 



h. ru. 



11 59 



12 13 

 9 59 



14 00 



14 35 



8 35 

 10 58 



16 00 



17 13 



10 29 

 17 54 



12 23 



6 51 



9 08 

 14 16 



8 45 



11 44 



12 51 

 17 07 



9 50 

 9 14 

 9 03 



13 57 

 16 40 

 II 08 

 11 40 



13 03 



7 32 



14 59 

 11 21 

 11 27 



8 00 

 8 37 



10 00 



10 11 



8 20 



34 



36 



48 



27 



24 



09 



14 



20,5 



05,5 



12,5 



44 



02 



10 



24 



43 



02 



33 



41 



07 



06 



14 



05 



21 



39 



51 



08 



33 



11 



09 



45 



22 



12,5 



02,4 



43,8 



25 



50,5 



ft. VI. 

 5 33 

 5 31 

 5 32 

 5 30 

 5 32 

 5 31 

 5 32 

 5 31 

 5 32 

 5 31 

 5 31 

 5 31 

 5 31 

 5 33 

 5 31 

 5 31 

 5 32 

 5 31 

 5 32 

 5 31 

 5 31 

 5 31 

 5 31 

 31 

 31 

 31 

 31 

 31 

 32 

 31 

 31 

 31 

 31 

 32 

 31 

 31 



06 



36 



45 



54 



02 



13 



33 



10,5 



49,5 



30,5 



49 



39 



20 



03 



26 



10 



01 



50 



34 



41 



24 



58 



49 



54 



28 



39 



31 



26 



19 



13 



20 



11,5 



25,1 



59,8 



48 



47,5 



ft. 



33 

 31 

 33 

 31 

 32 

 31 

 31 

 31 

 32 

 31 

 32 

 31 

 31 

 33 

 31 

 31 

 32 

 31 

 32 

 31 

 31 

 32 

 31 

 31 

 31 

 31 

 31 

 31 

 32 

 31 

 31 

 31 

 31 

 33 

 31 

 31 



04 

 51 



29 



08 



01 



27 



10 



21,5 



49,5 



48,5 



00 



51 



30 



00 



36 



24 



00 



47 



33 



43 



24 



00 



52 



56 



30 



40 



32 



26 



20 



14 



20 



12,5 



2G.4 



00,8 



49 



49,5 



h. m. 

 5 32 

 5 32 



31 

 31 



31 

 31 



32 

 32 



21,6 



21,8 



15,8 

 01,4 



28,8 

 48,5 

 12,1 

 05,4 



5 31 41 



5 31 

 5 31 

 5 31 



5 32 

 5 31 



16,1 



10 



35,3 



09,8 



52,2 



5 31 10 



Dollond's Achr. Telescope. 

 Do. 

 Do. 



Diagonal eyepiece used, 

 ditto — planet ve ry high. 

 Dollond's Reflecting Teles. 2 mts. later 

 Do. [than the other Telescope. 



Achr. Tel. L 



ditto. 

 Both Telescopes gave the same good 



observation. Achr. Tel. 

 very clear — ditto. 



Reflecting Tel. 7 mts. later than the other 

 Do. 2 later than Achr. Tel. [pi. very low. 

 Planet clear— satellite close. 



rather dull, 

 tremulous — satellite very close, 

 good, but very close, 

 bad on account of closeness, 

 very good — Reflecting Telescope. 

 very clear — ditto, 

 good— ditto. 



very good— ditto always used hence- 

 bad — Planet low and vapoury, [forward, 

 very good, near zenith. 

 very good, 

 good and clear, 

 very good. 



Bauds hardly visible — low. 

 exceedingly clear, 

 very good. 



good sight— doubted at first. 

 seen and doubted — very good, 

 belts not quite clear, 

 good — belts not very plain. 

 Planet verv clear. 



Mean of ten Immersions of I Satellite, 

 Mean often Emersions of I Satellite, 

 Mean of five Immersions of II Satellite, 

 Mean of six Emersions of II Satellite, 

 Mean of one Immersions of III Satellite, 

 Mean of four Emersions of III Satellite, 



31 24 



31 37,1 



32 30,3 



31 47,3 



32 33 

 32 18,7 



5 31 35,7 



5 31 37,0 



5 32 34,9 



5 31 48,1 



5 34 10 



5 32 31,2 



:u 



50,5 



31 



51,8 



31 



51,7 



31 



13 



31 



2S,8- 



31 



10 



Longitude of Benares by all the observations at Madras, 



by Nautical Almanack Tables for » 



the I and II Satellites, » 



by Connoissances des terns Tables i 



for the I and II Satellites, * 



Mean 



5 



31 



s. 

 42 E. 



5 



31 



44,3 E. 



5 



31 



48,2 E. 



5 



31 



45 E. 



