|
Polar Alignment
Put a "Clock Drive" that can spin the telescope around its Polar
Axis at the same rate the Earth spins, and you can track any star around its circumpolar
circumference. This is called the "Right Hour Angle" or, Right Ascension, and it is measured
from 0 to 24 hours from Greenwich Mean Time where each hour represents 15° of rotation about
the telescope's polar axis.
The other axis of your mount measures "Declination", which is the angle
between your Horizon (Celestial Equator) and whatever star you are looking at. The Declination of
Polaris is always equal to your own global latitude. The first step in Polar Aligning
an Equatorial Mount is to level the base of the mount. This does not need to be terribly accurate.
The next steps are for the Polar Alignment of a Newtonian Telescope mounted on a German
Equatorial Mount. Set the mount's Latitude Adjustment equal to the latitude where
the telescope is to be used.
|