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- OPTIONS: MAGNITUDE AND COLOR INDEX:
- * displaying a map of stars vm = visible magnitude (larger values
- * finding a star correspond to dimmer stars);
- * identifying a star ci = color index ("+" is blue, "-" red).
- 1560 brightest stars are
- currently in the data file. HORIZON COORDINATES:
- * elevation - measured from the horizon,
- KEYBOARD: * azimuth - from north ("+" means east).
- Keyboard equivalents are shown
- aside of some menu items. EQUATORIAL COORDINATES:
- * declination - from Earth's equator;
- HELP: * right ascension - from the Spring
- Explanations of all menu equinox (in hours and minutes; 1 hour
- options are provided via is equivalent to 15 degrees).
- the "Help" menu.
- ECLIPTIC AND GALACTIC COORDINATES:
- ST Systems Corporation expressed in latitude (measured from the
- Aerospace Systems Division ecliptic plane or from the galactic
- 4400 Forbes Blvd. equator, respectively) and longitude
- Lanham, MD 20706 - see any astronomy reference book.
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