Notes on the Reduction of Lunar Observations, Mathematical and Practical; Also Various Tables for Facilitating the Computations

Notes on the Reduction of Lunar Observations, Mathematical and Practical; Also Various Tables for Facilitating the Computations

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1881 edition. Excerpt: ...k 57'88 log k 1-7625; k' 57'76 log It' 1'76166 It + k' 115'64., ' I kl ' Ref.indist.=BTE%.1"-sina +.-sina, -It-+h'cotdl smd sina sind sine, ) _, (1) (2) 3) Ema 9'751469 sin a 9'92-@491 9826978 0'l730n a.'062958 1'762550 1'761660 lgoi 0132963 0132963 0142064 1'82249l. 2'6764.5 2:205l72 66'4.5 147'11 16o'4o 14.7'u 23'56 l60'4.o 53-l6..... 1-725585 B 0'002905 1'728490 53"'51 the lunar problem, are deduced, and to which we have already called attention in the description of previous methods. The tables of the 'Auxiliary Angle A, ' and of the ' Logarithmic Difierence, ' to be met with in the various collections of nautical tables, involve the efiects of the mean value of the refraction as well as those of parallax; whereas the tables of log A and log B used in RA1EB's method, deal with the consideration of parallax only, the corrections for refraction on the lunar distance being obtained independently. Since in this instance the temperature is assumed at 50, log T and log E both equal o, and B is the only significant factor. Vhich agrees very nearly with the results previously obtained by rigorous processes (see ante, pp. 4 and 11.), Taken to the nearest 15," reserving 2"'9. + Since the thermometer is assumed at 50, its normal condition, no correction is required for temperature. 1 NoRm's Linear Table gives the correction for refraction in this example 2' 44.." PARxmfs Table IV. makes it 2'41"'9. V Which accords with NoR1a's result. See also Example II., ante, p. 6. ExAMPLE III.--Planetary lunar, Venus (RmD1.E's Navigation, 4th ed. 1842, p. 260). True distance 6 7.1-33:8 '4. Which agrees with R1nnLr.'s result. To...show more

Product details

  • Paperback | 34 pages
  • 188.98 x 246.13 x 1.78mm | 81.65g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236970233
  • 9781236970237