 | Ira Osborn Baker - 1893 - Страниц: 430
...plane of the polar axis is parallel to the plane of the terrestrial sight-line of the instrument, then when the latitude of the place of observation and the declination of the sun are correctly set off, and the solar sight-line is directed to the sun, the terrestrial sight-line... | |
 | Thomas Kerigan - 1828 - Страниц: 776
...4" 01 METHOD IV. Of computing the horary Distance of a cekstial Object from the Meridian. RULE. If the latitude of the place of observation and the declination of the celestial object be of different names, let their sum be taken, — otherwise, their difference, —... | |
 | David Thomson - 1831 - Страниц: 316
...used. 9. The polar distance of an object is its distance from the elevated Pole of the observer. Hence, when the latitude of the place of observation, and the declination of the observed object, are both of the game name, (that is, both North or both South) the difference between... | |
 | Thomas Kerigan - 1838 - Страниц: 804
...IV. Of computing the Hour Angle, or Horary Distance of a Celestial Object from the Meridian, RULE. If the latitude of the place of observation and the declination of the celestial object be of contrary names, let their sum be taken, — otherwise, their difference, —... | |
 | Alexander Baharie - 1844 - Страниц: 218
...object ? A. The polar distance of an object is its distance from the elevated pole of the observer. When the latitude of the place of observation, and the declination of the object are both of the same name, that is, both north, or both south, subtract the declination from 90 deg. 'and... | |
 | Perry Fairfax Nursey - 1845 - Страниц: 472
...the affection of the angle is always determined by the sign of the function which- expresses it, and when the latitude of the place of observation, and the declination of the heavenly body are of different names, as they are in the case which we are now considering, the sign... | |
 | 1845 - Страниц: 472
...the affection of the angle is always determined by the sign of the function which expresses it, and when the latitude of the place of observation, and the declination of the heavenly body are of different names, as they are in the case which we are now considering, the sign... | |
 | Janet Taylor - 1851 - Страниц: 674
...Answer.— 61° 23' 46"N. by N A. 61 24 0 N. Tujiiid the latitude by a meridian altitude below the pole.* When the latitude of the place of observation, and the declination of u celestial body are both of the same name, if the former exceed the complement of the latter, the... | |
 | Alfred Wilks Drayson - 1861 - Страниц: 236
...OR APPARENT TIME. To find the local time, it is necessary to know the true altitude 0 at the time, the latitude of the place of observation, and the declination of the sun. The true altitude may be found with the sextant as before mentioned ; the latitude may be found... | |
 | Sir George Back, Royal Geographical Society (Great Britain) - 1878 - Страниц: 120
...The altitude of any star when passing the meridian may be found by adding together the complement of the latitude of the place of observation and the declination of the star, when they are of the same name, or taking their difference when of contrary names; the altitude... | |
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C, as seen above, are constants, depending upon the latitude of the place of observation and the declination of the star. Tables for these quantities will be found in an appendix to Annual Report US Coast and Geodetic Survey for 1874. 
