Focusing The Finderscope And Reticle; Aligning The Finderscope - Celestron Ultima 8 Instruction Manual

Focusing the Finderscope and Reticle

The finderscope can be focused by loosening the locking ring, on the front of the finder, then rotate the front cell. When
you have reached the desired focus, turn the locking ring so it pushes against the front cell. This locks the focus. See
Figure 3-5.
To focus the reticle, rotate the eyepiece

Aligning the Finderscope

The Ultima 2000 comes with a 7x50mm finderscope. The finderscope is designed to help you find alignment stars and for
terrestrial use of a wide field. The first number used to describe the finderscope is the power. The second number is the
diameter of the objective lens in millimeters. So the 7x50 finderscope is 7 power and has a 50mm objective lens.
Incidentally, power is always compared to the unaided human eye. So, a 7 power finderscope magnifies images seven
times more than the human eye.
To make things a little easier, you should align the finderscope during the day when it is easier to locate objects. To align
the finderscope:
1. There is no need to turn on the telescope for this procedure.
2. Choose a conspicuous object that is over 500 yards away. This will eliminate any possible parallax effect.
3. Point your telescope at the target and center it in the eyepiece of the telescope.
4. Check the finderscope 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 finderscope will make it much easier to find objects in the main optical tube.
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Figure 3-5