Celestron Cometron FirstScope 76mm f/4 Alt-Az Reflector Telescope

Celestron Cometron FirstScope 76mm f/4 Alt-Az Reflector Telescope

Celestron Cometron FirstScope 76mm f/4 Alt-Az Reflector Telescope

B&H # CECFSTS MFR # 21023
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Product Highlights

  • 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
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Celestron Cometron FirstScope Overview

  • 1Description

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
  • 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
  • 5x24 configuration
  • Wide field of view enables fast acquisition of subjects and easy star-hopping
  • Manual alt-azimuth mount
  • Stable tabletop base
  • Weight: 4.3 lb
UPC: 050234210232
In the Box
Celestron Cometron FirstScope 76mm f/4 Alt-Az Reflector Telescope
  • 20mm Eyepiece
  • 4mm Eyepiece
  • 5x24 Finderscope
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

    Celestron Cometron FirstScope Specs

    Optical Tube Assembly
    Optical Design Newtonian Reflector
    Aperture 76 mm / 3"
    Focal Length 300 mm
    Focal Ratio f/4
    Eyepiece Barrel Diameter 1.25"
    Diagonal No
    Finderscope Yes
    Optical Tube Dimensions Length: 10" / 25.4 cm
    Type Manual; Alt-Azimuth
    Batteries None
    Weight 4.3 lb / 2.0 kg
    Packaging Info
    Package Weight 6.05 lb
    Box Dimensions (LxWxH) 15.2 x 9.5 x 9.5"

    Celestron Cometron FirstScope Reviews

    Cometron FirstScope 76mm f/4 Alt-Az Reflector Telescope is rated 4.7 out of 5 by 3.
    Rated 5 out of 5 by from Definitely a first scope, but a very well done first scope. I decided to get this scope instead of the Astromaster 130, because well, its cheap, and litterally my first scope!  After I get my bearings with this scope, I can give it to the grand kids and get something a little bit more...powerful.  This scope can barely look at a full moon without killing your eyes, but a moon filter does help (I got the Astromaster accessory kit.  Not super powerful at 300mm, but still does a great job.  I needed to adjust the secondary mirror a smidge to begin with, but even without that, it wasnt terrible.  The spotter scope is fairly temperamental to align, but I still love that it has it (never thought it would be so useful).  I live in appartment, so the base just barely fits on my deck railing.
    Date published: 2018-11-01
    Rated 4 out of 5 by from excellent beginner scope small, light, easily set up.Excellent for young star gazers. not a toy.
    Date published: 2015-11-17
    Rated 5 out of 5 by from good scope first light last night, moon Jupiter, Mars, satellite, all very good. this is not a toy! for 54.00 dollars worth every penny
    Date published: 2018-08-17
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