Why Purchase from All-Star Telescope?
Free Expert Support
Whether you are a first timer needing help with setting up or an enthusiast that can't quite make that one thing work, our expert staff are ready to support your needs. With decades of knowledge and first hand experience we've been there and we can help you through it!
Stress Free, Secure Transactions
You can trust purchasing and delivery with All-Star Telescope. All of our transactions are 100% secure and Level 1 PCI DSS compliant thanks to Shopify's ShopPay platform. For additional protection, we insure 100% of the value of every shipment we make. If it get's lost during shipment, we replace it. If it gets damaged during shipment, we repalce it. We make sure your product arrives exactly as you would expect it to; we promise.
We also ensure privacy protection. We never keep any of your credit card information on file and any of your personal data is stored accordign to our policies.
30 Day Return Policy
Buy with confidence knowing that we accept returns up to 30 days after purchase. We want you to have something you will actually use and we are confident that we keep good quality products in our store with No Junk.
Price Match Promise
Shipping around for the best price is tough, we make it easier by offering the best pricing in the market. But if you find a better price on an in-store item somewhere else we will match it!
Product 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 the moon or a dazzling comet. 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.
The FirstScope is a wonderful keepsake for anyone interested in astronomy. This quality Dobsonian style telescope features a 76 mm aperture reflector optical tube. FirstScope is an ideal entry level astronomical telescope. It is very easy to observe with, the user simply navigates the night sky by moving the tube in the direction of their desired object, making the viewing experience a snap! The compact design makes it easy enough to take with you on your next outdoor adventure. FirstScope is also stylish enough to be a decorative fixture on your bookshelf or desk.
What can I see with a Celestron Cometron FirstScope Telescope (21023)?
Here are some simulated views of common objects. Results with your telescope will vary with viewing conditions, obrits, equipment and more.
Jupiter with
20mm Eyepiece - 15x Magnification
(Included with This Telescope)
Jupiter with
4mm Eyepiece - 75x Magnification
(Included with This Telescope)
Jupiter with
5mm Eyepiece - 60x Magnification
Sold Separately
Moon with 20mm Eyepiece
15x Magnification
(Included with This Telescope)
Moon with 4mm Eyepiece
75x Magnification
(Included with This Telescope)
Moon with 5mm Eyepiece
60x Magnification
Sold Separately
Andromeda with 36mm Eyepiece
8x Magnification
Sold Separately
Andromeda with 20mm Eyepiece
15x Magnification
(Included with This Telescope)
Andromeda with 4mm Eyepiece
75x Magnification
(Included with This Telescope)
What's in the Box
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) |
Additional Articles, Videos, and Links
5 Tips to Get the Most out of Your New Telescope
So you got a new telescope; now what? It usually starts out with a lot of excitement and enthusiasm. You get a new telescope, get it assembled and maybe test it out through a window looking at a tr...
Buying Your First Telescope - Part One: What's the Best Beginner Telescope?
Buying the right telescope as a beginner can be a real challenge. In these articles we explain the key considerations when buying a beginner telescope. We'll cover the vocabulary you're going to...
Buying Your First Telescope - Part Two: Making the Choice
Once you have become familiar with the sky and have been enticed by the views through other peoples’ telescopes, you will want your own. So what to buy?
Buying Your First Telescope - Part Three: Our Recommendations (2023)
We present our suggestions for telescopes we find offer great value in each of several price ranges. But within a price class, you have a choice of what features might be most important to you and ...
How to Pick the Best Telescope Eyepieces
Finding the right new telescope eyepiece can be a game changer. This post will help you to pick the best telescope eyepiece for your needs.