When using precomputed sight reduction tables, such as H . O . 229, the assumed position must be selected to yield integer degree values for " LHA " ( local hour angle ) and latitude.
42.
Then get the hour angle based on RA and local sidereal time ( or RA, observer's longitude, and Greenwich sidereal time ), and use the relations you've found to convert HA & dec to altitude and azimuth.
43.
The Almanac specifies for each whole hour of the year the position on the Earth's surface ( in declination and Greenwich hour angle ) at which the sun, moon, planets and first point of Aries is directly overhead.
44.
The assumed longitude is now added or subtracted to the Greenwich Hour Angle of the object to obtain the local hour angle, that is the difference in longitude between the DR position and the geographical position of the object.
45.
The assumed longitude is now added or subtracted to the Greenwich Hour Angle of the object to obtain the local hour angle, that is the difference in longitude between the DR position and the geographical position of the object.
46.
But if you enter the salty pool with a small cut on your foot, as I did, your entire being becomes focused on that one stinging spot, and you spend the full half-hour angling your body to keep the foot above the water.
47.
X is described in terms of its angular height above or below the equator, known as its Declination ( corresponding to its Latitude ), and its'Hour angle', the angle between its meridian and that of X will be its Greenwich Hour Angle, measured in degrees.
48.
X is described in terms of its angular height above or below the equator, known as its Declination ( corresponding to its Latitude ), and its'Hour angle', the angle between its meridian and that of X will be its Greenwich Hour Angle, measured in degrees.
49.
:The local hour angle is the angle measured westward from the meridian ( that is, the projection of the line of longitude the observer is standing on onto the celestial sphere ) to the hour circle of the celestial object, measured westward along the celestial equator.
50.
:: : Actually the irony here is that while the web based sunrise and sunset results displayed on the websites are seem accurate and identical it is the other values such as time offset, equation of time, solar hour angle, azimuth and zenith that are not the same.
