- Fast focal ratio offers a wide field of view, perfect for observing comets, star clusters, galaxies, and more
- Lightweight and portable, a great grab-and-go telescope
- Simple design makes it easy for beginners to use
- No-tool setup means you are up and observing in no time
- Includes a finderscope and 2 Kellner eyepieces
ITEM # 21023
Be ready for the next big comet with Celestron’s special-edition Cometron FirstScope, a compact, lightweight telescope that’s perfect for beginners looking to experience the magic of a dazzling comet, planet, or nebula. This tabletop Dobsonian-style telescope includes a spherical mirror with a generous 76mm of aperture. The Cometron FirstScope provides bright, sharp views of comets and other celestial objects, and renders the Moon’s mountains and craters in crisp detail. And thanks to its wide field of view, you’ll be able to observe the brightest part of the comet and its tail or favorite deep-sky objects like the Orion Nebula.
The Cometron FirstScope offers several upgrades from the original Celestron FirstScope, including 2 Kellner eyepieces and a 5x24 finderscope. Weighing just 4.3 pounds, the Cometron FirstScope is a tabletop telescope that you can take on all your outdoor adventures. It’s also stylish enough to be a decorative fixture on your bookshelf or desk.
|Optical Design||Newtonian Reflector|
|Aperture (mm)||76 mm (2.99 in)|
|Focal Length||300 mm (12 in)|
|Focal Length of Eyepiece 2 (mm)||Kellner 10 mm (0 in)|
|Highest Useful Magnification||180 x|
|Lowest Useful Magnification||11 x|
|Limiting Stellar Magnitude||11.9|
|Resolution (Rayleigh)||1.83 arc seconds|
|Resolution (Dawes)||1.53 arc seconds|
|Light Gathering Power (Compared to human eye)||118 x|
|Secondary Mirror Obstruction||1.1 in (28 mm)|
|Secondary Mirror Obstruction by Diameter||37%|
|Secondary Mirror Obstruction by Area||14%|
|Optical Coatings||Aluminum with SiO2|
|Optical Tube Length||10 in (254 mm)|
|Total Telescope Kit Weight||4.3 lbs (1.95 kg)|
|Warranty||2-year Telescope Warranty|
Warranty 2 Years
For two years, Celestron will cover repairs or replacement of this product in cases of defective components. This warranty shall be void and of no force of effect in the event a covered product has been modified in design or function, or subjected to abuse, misuse, mishandling or unauthorized repair. Further, product malfunction or deterioration due to normal wear is not covered by this warranty. For more details, visit our Warranty page.
Where to Buy
You can count on our Premier Select dealers to offer an extensive selection of telescopes, binoculars, and microscopes in stock for immediate delivery. As our trusted partners, they provide advanced product expertise and superior customer service.
Celestron Premier Plus dealers carry a range of Celestron products. As our trusted partners, they provide advanced product expertise and superior customer service.