Advertisement
R.A. lock knob
Declination (Dec.)
slow-motion
control
Latitude adjustment t-bolt
Azimuth adjustment knob
Big Dipper
(in Ursa Major)
To find Polaris in the night sky, look north and find the Big Dipper. Extend an imaginary line from the two "Pointer
Stars" in the bowl of the Big Dipper. Go about 5 times the distance between those stars and you'll reach Polaris,
which lies within 1° of the north celestial pole (NCP).
Figure 3. The equatorial mount
Little Dipper
(in Ursa Minor)
N.C.P.
Figure 4. Finding Polaris
Declination (Dec.)
(R.A.) setting circle
(R.A.) slow-motion
Polaris
setting circle
Right ascension
Right ascension
control
Latitude locking
t-bolt
Latitude scale
Cassiopeia
9
Advertisement
