Cometron FirstScope Telescope
Item #: 21023 / 21023-CGL- 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
Overview
- 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
Includes These Celestron Technologies
Description
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 76 mm 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 lbs, 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.
Specifications
| Optical Tube Info: | |
|---|---|
| Optical Design: | Newtonian Reflector |
| Aperture: | 76mm (2.99") |
| Focal Length: | 300mm (12") |
| Focal Ratio: | f/3.95 |
| Focal Length of Eyepiece 1: | 20mm (0.79") |
| Magnification of Eyepiece 1: | 15x |
| Focal Length of Eyepiece 2: | 10mm (0.4") |
| Magnification of Eyepiece 2: | 30x |
| Barlow Lens: | Not Included |
| Finderscope: | 5x24 |
| Star Diagonal: | Not Included |
| Optical Tube: | Plastic |
| Highest Useful Magnification: | 180x |
| Lowest Useful Magnification: | 11x |
| Limiting Stellar Magnitude: | 11.9 |
| Resolution (Rayleigh): | 1.83 arc seconds |
| Resolution (Dawes): | 1.53 arc seconds |
| Light Gathering Power (Compared to human eye): | 118x |
| Secondary Mirror Obstruction: | 28mm (1.1") |
| Secondary Mirror Obstruction by Diameter: | 37% |
| Secondary Mirror Obstruction by Area: | 14% |
| Optical Coatings: | Aluminum with SiO2 |
| Optical Tube Length: | 266mm (10.5") |
| Optical Tube Diameter: | 95.25mm (3.75") |
| Optical Tube Weight: | 1.4 lbs (0.64 kg) |
| Dovetail: | N/A |
| Mount Info: | |
| Mount Type: | Manual Tabletop Dobsonian |
| Height adjustment range (includes mount and tripod): | N/A |
| Tripod Leg Diameter: | N/A |
| Slew Speeds: | Manual |
| Tripod Weight: | N/A |
| Dovetail Compatibility: | N/A |
| Software: | Celestron Starry Night Basic Edition Software, and SkyPortal App |
| Total Kit Weight: | 4.3 lbs (1.95 kg) |
| Included Items: |
Optical tube Dobsonian Mount 10mm and 20mm Eyepieces Finderscope |
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