Aligning The Finder - Celestron The G-8 11023 Instruction Manual

Aligning the Finder

24 • Telescope Basics
The G-8 and the C8 Optical Tube Assembly come with a 6x30mm finder. The
finder is designed to help you find objects that are easily overlooked in the
main optics of the telescope. The first number used to describe the finder is
the power. The second number is the diameter of the objective lens in millime-
ters. For example, the G-8 finder is 6x30 which means it is 6 power and has
a 30mm objective lens. Incidentally, power is always compared to the unaided
human eye. So, a 6 power finder magnifies images six times more than the
human eye.
To make things a little easier, you should align the finder during the day when
it is easier to locate objects. To align the finder:
1. Choose a conspicuous object that is over 500 yards away. This will
eliminate any possible parallax effect.
2. Point your telescope at the target and center it in the main optics of the
telescope.
3. Lock the R.A. and DEC clamps to hold the telescope in place.
4. Check the finder to see where the object is located in the field of view.
5. Adjust the screws on the finder bracket, tightening one while loosening
another, until the cross hairs are centered on the target.
6. Tighten each screw an additional quarter of a turn until you are sure they
will not come loose easily.
Accurate alignment of the finder will make it much easier to find objects in the
main optical tube.