Astronomical Papers Prepared for the Use of the American Ephemeris and Nautical Almanac

Astronomical Papers Prepared for the Use of the American Ephemeris and Nautical Almanac

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1891 edition. Excerpt: ... addenda 7' 57" ac cum proportione horis pnecedentibus, ut haberetur tempus verum. Quod autem liuea meridiana cum meridiauo observatorii omuiuo congruat, id habeo ex certissimis, & tutissimis mediis, qu1bus eandem decennio abhinc duxi, & duobus deinceps anuis variis intermediis temporibus eodem modo exploravi, ita, ut nunquam integri minnti secundi discrimen deprehenderim. Differt porro meridianus mostri observatorii a meridiauo Observatorii Parisiensis 36' 10" sub altitudiue poli 480 45' 45." -- - h. Circa egressum 9 ex disco (c) adparentem tempus contactus limbi 0 & 9 occidentals 9 4 59 30 Centri 9 limbum 0 Occident subeuntis 9 14 6 o Contactus limbi 0 Occident, & 9 orient 9 23 4 30 lntervallum temporis inter utrumque contactum....018 5 o BOLOGNA. Ephemerides Vindobonenses, 1762; Philosophical Transactions, 1761, p. 399. The observations were as follows: The names of the three observers in the "conclavi inferiori" are quoted from Encke. FLORENCE. Ephemcridcs Vindobonenses, 1762. Leonardo X1menes, S. J., all' observatorio di S. Gio. Evangelista e ridota al tempo vero del Meridiauo Florentiuo: h. Contactus int 9 4 28.4 Contactus ext 922 56.4 Duratio emersionis 018 28.0 Emersionis toto tempore aer erat aliquantum caliginosus ob continuos vapores terrestres, qui discum Solarem obtegebant. Contactus interior mihi videtur admodum accurate observatus, et in contactu exteriore paucorum secundorum solum dubium superest. Tempore transitus Veneris discus Veneris apparebat bene terminates et rotundus, sine iride, sine annulo, sive lucido, sive obscuro, sine ulla inequalitate aut prominentiis in circumferentio. X1menes also found: m. s. Diam.(c) by 10 transits 2 16.87 = 15 48.50 by microm 15 47.show more

Product details

  • Paperback | 142 pages
  • 189 x 246 x 8mm | 268g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236530217
  • 9781236530219