Lecture 1: The Sky Flashcards
1
Q
Celestial Sphere
A
- Stars appear to lie on the great celestial sphere around Earth
- Appears to rotate east to west because of the rotation of the Earth
2
Q
Measuring Positions in the Sky
A
- 1 degree (º) = 60 arcmin (‘) = 3600 arcsec (‘’)
- latitude is declination for sky
- longitude is right ascension for sky (hrs, min, sec)
3
Q
Spherical Coordinate System
A
- Zenith is directly overhead (90º)
- Azimuth is at horizon (0º)