Celestron Cometron FirstScope - 76mm Tabletop Dobsonian Telescope - 21023

Celestron   ——   SKU: CEL-21023
$79.73 CAD
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About the Celestron Cometron FirstScope - 76mm Tabletop Dobsonian Telescope...

Be ready for the next big comet with the special-edition Celestron Cometron FirstScope, a compact, lightweight Celestron 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 the Celestron Telescope''s 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 Celestron Cometron FirstScope offers several upgrades from the original Celestron FirstScope, including 2 Kellner Celestron Telescope Eyepieces and a 5x24 finderscope. Weighing just 4.3 pounds, the Cometron FirstScope is a tabletop Celestron 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.



Celestron Cometron FirstScope - 76mm Tabletop Dobsonian Telescope Features...


  • 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



Celestron Cometron FirstScope - 76mm Tabletop Dobsonian Telescope Specifications...

Optical Design: Newtonian Reflector

Aperture (mm): 76 mm (2.99 in)

Focal Length: 300 mm (12 in)

Focal Ratio: 3.95

Focal Length of Eyepiece 2 (mm): Kellner 10 mm (0 in)

Finderscope: 5x24

Tripod: None

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 Area: 14 %

Secondary Mirror Obstruction by Diameter: 37 %

Optical Coatings : Aluminum with SiO2

Optical Tube Length: 10 in (254 mm)

Total Telescope Kit Weight: 4.3 lbs (1.95 kg)

Celestron Product Number: 21023