Astronomical Observations Made Under the Direction of G.B. Airy

Astronomical Observations Made Under the Direction of G.B. Airy

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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. 1842 edition. Excerpt: ...irregular. Jan. 31, 23h. The Transit instrument was levelled. Feb. 3, 5, and 7. The azimuthal error is the mean of three determinations, viz., of that on Feb. 3, from tabular places of Polaris and 0 Ceti, allowing for clock-rate; and of those on Feb. 5 and Feb. 7, from tabular places of 8 Ursae Minoris and Sirius, allowing 0s '02 for clock-rate. Feb. 7, 2Sb. The Transit instrument was levelled. Illuminatkd End Ov Axis East. Order of Wires, for Stars above the Pole,,,, 1), E, F, G. Feb. 8. The azimuthal error by tabular places of i Ursae Minoris S.P. and Sirius, allowing 0-02 for clock-rate. Feb. 10 to 14. The azimuthal error is the mean of that on Feb. 10, from tabular places of Polaris S.P. and Spica; and of that on Feb. 12 and 13, from 8 Ursae Minoris S.P., Ursas Minoris, and 8 Ursae Minoris S.P. 10. Intervals irregular: very tremulous. 15, 16, 17. Extremely faint and difficult to observe. 22. Cloudy. 30. Faint: cloudy. 41, 46, 47, 48. Very cloudy 47. The 2nd wire was set down 48s"0. Feb. 14 and 21, 23." The Transit instrument was levelled. Feb. 17. The azimuthal error by tabular places of SUrsse Minoris and a Aquilas, allowing 0"-10 for clock-rate. Feb. 42. The azimuthal error by tabular places of S Ursas Minoris S.P. and Sirius, allowing 0-02 for clock-rate. Illuminated End Of Axis East. Order of Wires, for Stars above the Pole,,, C, D, E, F, G. 15, 16. Exceedingly tremulous. 17. Very tremulous. 22. Great undulation: not very good. 37, 38. Exceedingly faint: observation not good: the intervals of the wires after the 2nd very irregular. 42. The images of the stars bad during the evening. Feb. 84, 25, and 28. The azimuthal error by tabular places of Ursae...show more

Product details

  • Paperback | 60 pages
  • 189 x 246 x 3mm | 127g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236647319
  • 9781236647313