CELESTRON 21024 First Scope User Guide
- June 3, 2024
- Celestron
Table of Contents
CELESTRON 21024 First Scope
This manual covers basic instructions. For more detailed instructions, information, please visit celestron.com.
OVERVIEW
- Eyepiece
- Focuser
- Tube End
- Thumbscrew
- Focus Knob
- Optical Tube
- Lock nut
Your telescope is ready to use right out of the carton. Two eyepieces are included – 20 mm (15 power), and 4 mm (75 power). Remove the lens cap from the front of the optical tube before searching for objects.
INSTALLING THE EYEPIECES
An eyepiece is an optical element that magnifies the image focused by the telescope. It fits directly into the focuser (after removing the cap). Make sure the thumbscrews are not protruding into the focuser tube. Then, insert the chrome barrel of the eyepiece into the focuser and tighten the thumbscrews, being careful not to overtighten. Locate objects with the low power eyepiece (15x). Once you’ve centered your object, you can change to the higher-power eyepiece (75x) for more magnification. The eyepieces can be changed by reversing the procedure described above.
POINTING THE TELESCOPE
The telescope is designed to be used on a table or other flat, sturdy surface. The FirstScope is easy to move wherever you want to point it. Turn counterclockwise to loosen the lock nut and hold the tube end. Sight along the optical tube towards the object you want to find. Move the tube end until you find the object you are searching for and then tighten the lock nut.
IMAGE ORIENTATION
When looking through the eyepiece from the rear or side of the optical tube (natural position), your image will be inverted (upside down and backwards) or angled. If you view from the front (slightly to either side) of the optical tube, the image will be correct. Use this technique for looking at terrestrial subjects.
FOCUSING
Simply turn the focus knob until the object comes in sharp. Turning the knob clockwise allows you to focus on an object that is farther than the one you are currently observing and vice versa. You will have to refocus after changing eyepieces.
SOLAR WARNING: Never look directly at the sun with the naked eye or with a telescope (unless you have the proper solar filter). Permanent and irreversible eye damage may result!
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SOLAR WARNING: Never attempt to view the sun through any telescope without a proper solar filter.
NEED ASSISTANCE
Contact Celestron Technical Support: celestron.com/pages/technical- support
Made in China
References
- Celestron - Telescopes, Telescope Accessories, Outdoor and Scientific Products
- Technical Support | Celestron
- Warranty | Celestron