Celestron 22066 AstroMaster LT Manual

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8 I ENGLISH

THE STAR DIAGONAL

The star diagonal attaches to the back of the 60 mm and 70 mm refracting telescopes and contains a small mirror that

reﬂects light at a 90° angle, providing a more comfortable viewing position. If you were to install the eyepiece directly into

the back of a refracting telescope, the image would be mirror reversed and upside-down. The star diagonal will ﬂip the

image right-side up but the image will still appear mirror reversed left to right. This is normal for astronomical telescopes.

To insert the diagonal:

1. Remove the caps from both sides of the diagonal.

2. Loosen the setscrews on the back of the focuser and

pull out the small dust cap.

3. Insert the smaller tube on the diagonal into the back of

the focuser and secure it by tightening the setscrews.

You can adjust the angle of the star diagonal to any

desired direction before tightening the screws.

NOTE: A star diagonal will not reach focus on a Newtonian telescope. The image

will always appear upside-down.

THE EYEPIECE

Your telescope comes with two eyepieces. The 20 mm which will give low magniﬁcation with a moderately wide ﬁeld of

view. The 10 mm will give you higher magniﬁcation, but a narrower ﬁeld of view. Additional eyepieces can be purchased

to increase or decrease the magniﬁcation to your desired level. When ﬁrst locating an object, it is best to use the 20 mm

eyepiece, then, once the object is centered, change to the 10 mm eyepiece to “zoom in” on it.

THE TELESCOPE TUBE

To attach the telescope tube to your tripod and mount:

1. Move the mount so that the telescope mounting platform

is parallel to the ground. Lock the altitude clutch to

prevent it from moving.

2. Locate the dovetail bar mounted on the bottom of the

telescope tube.

Holding the telescope tube above to the mount, slide

the dovetail bar into the telescope clamp at the top

of the mount.

4. Tighten the large hand knob on the mounting screw to

secure the telescope in place.

NOTE: The 70 mm refractor is shown, but the 60 mm refractor and 114 mm

Newtonian attach to the mount in the same way.

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Celestron 22066 AstroMaster LT 60AZ Telescope with Phone Adapter and Moon Filter