 To the hour angle thus found, add the star's right ascension; and from the sum, increased if necessary by 24 hours, subtract the right ascension of the mean sun ; the remainder is mean time at the place at the instant of observation.  Navigation and Nautical Astronomy - Page 199by H. W. Jeans - 1858Full view - About this book
 | James Inman - 1849 - 302 pages
...distance. Express this astronomically, and add it (except for the sun) to the right ascension of mean sun. From the sum (increased if necessary by 24 hours) subtract the right ascension of the body : the remainder (diminished by 24 hours if greater than 24 hours) will be the hour angle of the.... | |
 | James Inman - 1849 - 508 pages
...is particularly useful in turning sidereal time into mean solar time as follows. From sidereal time, increased if necessary by 24 hours, subtract the right ascension of the sun at the preceding apparent noon. The remainder will be the interval between apparent noon and the... | |
 | H. W. Jeans - 1853 - 314 pages
...at top of page, if heavenly body be west of meridian, but at bottom, if east of meridian. 7. To Jtnd mean time at ship. To the hour angle thus found, add...ascension; and from the sum, increased if necessary by 21 hours, subtract the right ascension of the mean sun ; the remainder is mean time at the place at... | |
 | F. Labrosse - 1868 - 222 pages
...Epitome, wenn "* 3rd. Add together the Mean Time at Ship and the corrected 4 n ¿-t Sidereal Time ; from the sum, increased if necessary by 24 , ' hours, subtract the right ascension of the star ; the re- HÔûr^nsrie "ег •* mainder will be the star's hour angle West of the meridian.... | |
 | Robert Mills Inskip - 1869 - 140 pages
...the star, and also the right ascension of the mean sun. Then, from the right ascension of the star (increased if necessary by 24 hours), subtract the right ascension of the mean sun ; the remainder will be the ship mean time when the star is on the meridian. Note. — Where the mean time of passage... | |
 | Henry William Jeans - 1870 - 288 pages
...the top of the page when the star is west of the meridian, and at bottom when east. To the hour-angle thus found add the star's right ascension, and from...sum (increased if necessary by 24 hours) subtract * To find ship mean time, using the common tablee of sines, &c., see second method, p. 164, and ex.... | |
 | James Inman - 1870 - 560 pages
...is particularly useful in turning sidereal time into mean solar time as follows. From sidereal time, increased if necessary by 24 hours, subtract the right ascension of the sun at the preceding apparent noon. The remainder will be the interval between apparent noon and the... | |
 | James Inman - 1872 - 818 pages
...distance. Express this astronomically, and add it (except for the sun) to the right ascension of mean sun. From the sum (increased if necessary by 24 hours) subtract the right ascension of the body : the remainder (diminished by 24 hours if greater than 24 hours) will be the hour angle of the... | |
 | Squire Thornton Stratford Lecky - 1881 - 682 pages
...Table 38 of Norie's Epitome. 3rd Add together the Mean Time at Ship and the corrected Sidereal Time ; from the sum, increased if necessary by 24 hours, subtract the right ascension of the star ; the remainder will be the star's hour angle West of the meridian. Bast or west. If the remainder... | |
 | William Robert Martin - 1899 - 474 pages
...angle. To the right ascension of mean sun (corrected for approximate Greenwich date) add ship mean time, and from the sum (increased if necessary by 24 hours) subtract the moon's right ascension (also corrected for Greenwich date) : the result is the moon's hour angle (rejecting... | |
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