Orion 9086, 9025, 9024 instruction manual Axisdeclination Axis, The equatorial mount

Models: 9024 9086 9025

1 16
Download 16 pages 38.36 Kb
Page 13
Image 13
AXISDECLINATION

R.A. lock knob

Declination (Dec.) slow motion control

Latitude adjustment t-bolt

Azimuth adjustment knob

ASCENSION RIGHT

Declination (Dec.) setting circle

AXISDECLINATION

AXIS

Figure 3. The equatorial mount. Right ascension (R.A.) setting circle

Right ascension (R.A.) slow motion control

Latitude locking t-bolt

Latitude scale

Figure 3. The equatorial mount.

Little Dipper

(in Ursa Minor)

Big Dipper

N.C.P.

 

(in Ursa Major)

 

Polaris

Cassiopeia

Stars

Pointer

Figure 4.

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 five times the distance between those stars and you’ll reach Polaris, which lies within 1° of the north celestial pole (NCP).

13

Page 13
Image 13
Orion 9086, 9025, 9024 instruction manual Axisdeclination Axis, The equatorial mount