Celestron FirstScope 90AZ Instruction Manual page 4

Celestron firstscope 90az: instruction manual
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and tightening it down with the knurled nuts. Orient the Star Pointer so that the
glass window is facing towards the front of the tube.
9)
Remove the lens cap from the front of the telescope.
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Star Pointer Finderscope
The Star Pointer is the quickest and easiest way to point your telescope exactly at a desired object in the sky. It's like
having a laser pointer that you can shine directly onto the night sky. The Star Pointer is a zero magnification pointing
tool that uses a coated glass window to superimpose the image of a small red dot onto the night sky. While keeping both
eyes open when looking through the Star Pointer, simply move your telescope until the red dot, seen through the Star
Pointer, merges with the object as seen with your unaided eye. The red dot is produced by a light-emitting diode (LED);
it is not a laser beam and will not damage the glass window or your eye. The star pointer is powered by a long life 3-volt
lithium battery (#CR2032) located underneath the front portion of the Star Pointer. Like all finderscopes, the Star
Pointer must be properly aligned with the main telescope before it can be used. This is a simple process using the
azimuth and altitude control knobs located on the side and bottom of the Star Pointer. The alignment procedure is best
done at night since the LED dot will be difficult to see during the day
On / OFF / Brightness
Switch
Altitude Adjustment
Knob
Figure 1 – The StarPointer Finderscope with Mounting Bracket
To align the Star Pointer finderscope:
1. Before using the StarPointer, you must first remove the protective plastic cover between the battery and the battery
clip.
2. To turn on the Star Pointer, slide the On/Off switch to the 1 "On" position. To increase the brightness level of the
red dot, slide the switch to the 2 "On" position.
3. Locate a bright star or planet and center it in a low power eyepiece in the main telescope.
4. With both eyes open, look through the glass window at the alignment star.
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Azimuth Adjustment Screw (Adjustment knob
located on opposite side)
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Glass Window
Battery Compartment
Dovetail Mounting Bracket
Figure B

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