Celestron
Celestron FirstScope Cometron 76mm Dobsonian Astronomy Telescope #21023 (UK) NEW
Celestron FirstScope Cometron 76mm Dobsonian Astronomy Telescope #21023 (UK) NEW
Celestron FirstScope Cometron 76mm Dobsonian Astronomy Telescope #21023
Brand New UK Stock, boxed with full Guarantee
- 76mm Aperture Newtonian Reflector
- 300mm Focal Length, f/4 Focal Ratio
- Aluminum / SiO2 Mirror Coatings
- 1.25" Rack-and-Pinion Focuser
- 20mm and 10mm Eyepieces
- 5x24 Finderscope
- Manual Tabletop Alt-Az Mount
The Celestron Cometron FirstScope 76mm f/4 Alt-Az Reflector Telescope is designed as an ideal entry-level optic for observing the Moon and planets, comet-watching, and enjoying meteor showers. This tabletop telescope features a Newtonian reflector optical design whose mirror is coated with a highly reflective combination of aluminum with SiO2 to improve resolution and contrast, while reducing comas and color fringing. The scope comes with two fully multi-coated 1.25" diameter eyepieces that yield 15x and 30x magnifications. The manual tabletop alt-azimuth mount gives you easy control of the telescope for tracking near and deep-sky objects. This telescope is easy to assemble and transport, so you can spend less time setting up and more time enjoying the night sky.
Optical Performance
- 76mm aperture
- f/4 focal ratio
- 300mm focal length
- Newtonian reflector design
- Highly-reflective aluminum with SiO2 mirror coatings
- Resolution: 1.83 arc sec, Rayleigh; 1.53 arc sec Dawes
- Secondary Mirror Obstruction: 1.1 inches, 37% by diameter, 14% by area
- 1.25" rack-and-pinion focuser
Accessories
Eyepieces:
- 1.25" diameter barrel
- Accepts most 1.25" filters and accessories
- Fully multi-coated to improve color and contrast
- 10mm eyepiece for 30x magnification
- 20mm eyepiece for 15x magnification
Finderscope:
- 5x24 configuration
- Wide field of view enables fast acquisition of subjects and easy star-hopping
Mount
- Manual alt-azimuth mount
- Stable tabletop base
- Weight: 4.3 lb
What’s Included?
- Celestron Cometron FirstScope 76mm f/4 Alt-Az Reflector Telescope
- 20mm Eyepiece
- 4mm Eyepiece
- 5x24 Finderscope
- Limited 2-Year Manufacturer Warranty
Specification
Optical Design | Reflector |
Aperture | 76 mm |
Focal Length | 300mm |
Focal Ratio | f/4 |
Eyepiece Barrel Diameter | 1.25" |
Diagonal | None |
Finderscope | 5x24 |
Tripod | None |
Mount Type | Manual alt-azimuth |
Power Source | None |
Optical Tube Length | 10.0" / 25.4 cm |
Weight | 4.3 lb / 2.0 kg |
Package Weight | 5.15 lb |
Box Dimensions (LxWxH) | 15.2 x 9.5 x 9.5" |