Text book On Practical Astronomy
Text book On Practical Astronomy
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In our eReader you can find the full English version of the book. Read Text book On Practical Astronomy Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Text book On Practical Astronomy
What reading level is Text book On Practical Astronomy book?
To quickly assess the difficulty of the text, read a short excerpt:
= — 21° 15' 40" 2^ = 168° 59'. 4 p= 111° 15' 40 s = 84° 29'. 7 cos 8. 98196 s — h = 69° 07'. O sin 9. 97049 log 2)9. 11439 sin 1 P = 9-55719 i P = 21° 08' 45" P =42° 17' 30'' = 2^ 49^ lOS. = 9^ 10^ 50^.
= 12 02 . 8 Eq. T. = . 846X1. 73 = 12"* o4«. 29 I . 46 L. A. T.
Eq. T.
I2"» 02S. 83 M. L. T.
= 8^ 58"^ 47S . 2 15 42 . 0 Eastern time Watch time = 8^^ 43"* 05S . 2 = 8 43 47 . 2 Watch fast 42S.
77. Time by the Altitude of a Star.
The method of the preceding article may be applied equally well to... an observation on a star. In this case the parallax and semidiameter corrections are zero. If the star is west of the meri- dian the computed hour angle is the star's true hour angle; if the star is east of the meridian the computed hour angle must be subtracted from 24^. The sidereal time is then found by adding the right ascension of the star to its hour angle. If mean time is desired the sidereal time thus found is to be con- verted into mean solar time by Art. 34. Since it is easy to select stars in almost any position it is desirable to eliminate errors in the measured altitudes by taking two observations, one on a star which is nearly due east, the other on one about due west.
What to read after Text book On Practical Astronomy?
You can find similar books in the "Read Also" column, or choose other free books by George L George Leonard Hosmer to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
= — 21° 15' 40" 2^ = 168° 59'. 4 p= 111° 15' 40 s = 84° 29'. 7 cos 8. 98196 s — h = 69° 07'. O sin 9. 97049 log 2)9. 11439 sin 1 P = 9-55719 i P = 21° 08' 45" P =42° 17' 30'' = 2^ 49^ lOS. = 9^ 10^ 50^.
= 12 02 . 8 Eq. T. = . 846X1. 73 = 12"* o4«. 29 I . 46 L. A. T.
Eq. T.
I2"» 02S. 83 M. L. T.
= 8^ 58"^ 47S . 2 15 42 . 0 Eastern time Watch time = 8^^ 43"* 05S . 2 = 8 43 47 . 2 Watch fast 42S.
77. Time by the Altitude of a Star.
The method of the preceding article may be applied equally well to... an observation on a star. In this case the parallax and semidiameter corrections are zero. If the star is west of the meri- dian the computed hour angle is the star's true hour angle; if the star is east of the meridian the computed hour angle must be subtracted from 24^. The sidereal time is then found by adding the right ascension of the star to its hour angle. If mean time is desired the sidereal time thus found is to be con- verted into mean solar time by Art. 34. Since it is easy to select stars in almost any position it is desirable to eliminate errors in the measured altitudes by taking two observations, one on a star which is nearly due east, the other on one about due west.
What to read after Text book On Practical Astronomy?
You can find similar books in the "Read Also" column, or choose other free books by George L George Leonard Hosmer to read onlineMoreLess
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