Installing The Finder; Attaching The Finder Bracket - Celestron Ultima 11 Instruction Manual

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The Ultima 9 / comes with a 6x30 finderscope which has an 7° field-of-view. The Ultima 11 comes with a
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7x50 finder, which has a 5° field of view. The specifications for a finderscope, 6x30 or 7x50, stand for the
magnification and the aperture, in millimeters, of the scope. So, a 6x30 finder magnifies six times and has a
30mm objective lens.
A finder helps you locate and center objects in the main field of your Ultima telescope. The Polaris 7x50
finder serves a dual purpose. First, it is used as a regular finder to help you locate and center objects in the
main field of your Ultima 11. Second, if you purchase the optional Illuminator (51614-IL) and the Polaris
Guiding Plate (60121), it can be used to polar align your telescope. To accomplish this, the finder has a
built-in reticle that indicates the distance between the North Star, Polaris, and the true celestial pole. The
Guide Plate is used to show the exact position of Polaris on the reticle for the date and time you are
observing.
To ensure that the finder and bracket are not damaged during shipping, they are not attached to the
telescope at the factory. Start by removing the finder and hardware from the plastic wrapper. Included are
the following:
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Ultima 9 /
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6x30mm Finderscope
Rubber O-Ring
Three Nylon Thumbscrews (10-24x1/2)
Two Allen Head Screws (10-24x5/8)
Ultima 11
7x50mm Finderscope
Reticle Housing with Eyepiece
Rubber O-Ring
Three Nylon Thumbscrews (10-24x1/2)
Two Allen Head Screws (10-24x5/8")
Mounting the finder is a two-step process and is the same for the Ultima 9
bracket to the telescope, then mount the finder in the bracket.

Attaching the Finder Bracket

1. Find the two holes in the rear cell of the telescope on the top left, when looking from the back of
the tube.
2. Remove the tape covering the two holes. The tape is there to prevent dust and moisture from
entering the optical tube before the finder is installed.
3. Place the finder bracket over the two holes. Orient the bracket so that the rings that hold the finder
are over the telescope tube, not the rear cell.
4. Insert the screws through the bracket and into the rear cell.
WARNING: If you remove the finderscope, do not thread the screws back into the rear cell of the
telescope. The screws are long enough to obstruct the movement of, and possibly chip the primary mirror.

INSTALLING THE FINDER

Telescope Basics
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/ and 11. First you mount the
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