 | Frederick Walter Simms - Astronomical instruments - 1834 - 124 pages
...opposite limb of the image reflected from the artificial horizon, observing that when the inverting telescope is used, the upper limb will appear as the lower, and vice versa ;* the angle shown on the instrument, when corrected for the index error, will be double the altitude of the sun's... | |
 | Frederick Walter Simms - Astronomical instruments - 1844 - 178 pages
...opposite limb of the image reflected from the artificial horizon, observing that when the inverting telescope is used, the upper limb will appear as the lower, and vice versd;* the angle shown on the instrument, when corrected for the index error, will be double the altitude... | |
 | George Coleman (F.R.A.S.) - 1846 - 488 pages
...opposite limb of the sun reflected from the artificial horizon, observing, that when the inverting telescope is used, the upper limb will appear as the lower, and tice versa ; when the contact is formed at the lower limb, the images will separate shortly after the... | |
 | Basil Jackson - Military reconnaissance - 1847 - 410 pages
...artificial horizon, observing that, when the inverting telescope, with which large sextants are furnished, is used, the upper limb will appear as the lower, and vice versa;* the angle shown on the instrument will be double * When the contact is formed at the lower limb, the images will... | |
 | Benjamin Pike - Science - 1848 - 356 pages
...opposite limb of the image reflected from the artificial horizon, observing that when the inverting telescope is used, the upper limb will appear as the lower, and vice versa; the angle shown on the instrument, when corrected for the indexerror, will be double the altitude of the sun's... | |
 | Benjamin Pike (Jr.) - Scientific apparatus and instruments - 1848 - 482 pages
...opposite limb of the image reflected from the artificial horizon, observing that when the inverting telescope is used, the upper limb will appear as the lower, and vice versa ; the angle shown on the instrument, when corrected for the indexerror, will be double the altitude of the sun's... | |
 | Frederick Walter Simms - Astronomical instruments - 1850 - 184 pages
...reflected from the index-glass must be brought into contact with the opposite limb of the image reflected from the artificial horizon, observing that, when...the upper limb will appear as the lower, and vice versd .• * the angle shewn on the instrument, when corrected for the index error, will be double... | |
 | Sir Henry Edward Landor Thuillier - Surveying - 1851 - 826 pages
...opposite limb of the image reflected from the artificial horizon, observing that when the inverting telescope is used, the upper limb will appear as the lower, and vice versa ;* the angle shown on the instrument, when corrected for the index error, will be double the altitude of the sun's... | |
 | Elias Loomis - Spherical astronomy - 1855 - 508 pages
...shown on the instrument, when corrected for the index error, will be double the altitude of the sun's limb above the horizontal plane ; to the half of which, if the semidiameter, refraction, and parallax be applied, the result will be the true altitude of the centre.... | |
 | Elias Loomis - Astronomy - 1866 - 384 pages
...shown on the instrument, when corrected for the index error, will be double the altitude of the sun's limb above the horizontal plane ; to the half of which, if the semi-diameter, refraction and parallax be applied, the result will be the true altitude of the centra... | |
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... will be double the altitude of the sun's limb above the horizontal plane ; to the half of which, if the semidiameter, refraction, and parallax be applied, the result will be the true altitude of the centre. 
