Celestron - Cometron FirstScope 300mm Newtonian Reflector Telescope - White
Model: 21023
SKU: 8441819
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- General
- Product Name: Cometron FirstScope 300mm Newtonian Reflector Telescope
- Brand: Celestron
- Model Number: 21023
- Color: White
- Additional Dimensions
- Optical Tube Dimension Length: 254 millimeters
- Objective Lens Diameter: 76 millimeters (Generally, the larger the diameter of the objective lens, the greater the light-collecting power and the brighter images will appear.)
- Dimensions
- Product Height: 12 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
- Product Width: 8 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
- Product Depth: 10 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
- Product Weight: 4.3 pounds (The out of box weight of the item.)
- Compatibility
- Computerized Star Locator Compatible: false
- Included
- Eyepieces Included: 2 Kellner
- Features
- Computerized Hand Control: false
- Magnification Type: Variable (Variable magnification indicates the presence of a zoom function on the device, but fixed magnification cannot be adjusted by the user.)
- Optical Design: Reflector (There are three primary optical designs for telescopes: refractor, reflector, or catadioptric. Refractors use lenses, reflectors use mirror(s), and catadioptric telescopes use a combination of both to form images.)
- Imaging
- Field Of View: 0 degrees (The area of a target, measured as an angle from the location of viewing, that can be observed.)
- Magnification: 180 times
- Exposure Control
- Focal Ratio: f/3.95 (Measurement of the device's optic "speed," calculated by dviding focal length by aperture. The smaller (faster) the f/number, the lower the magnification, wider the field of view, and brighter the image - good for low power observing and deep space photography. Larger (slower) f/numbers are better suited for high power lunar and planetary viewing.)
- Focal Length: 300 millimeters (The distance from an optical device's primary lens or mirror to the point where light rays come together in a single focused point, used to determine a device's magnifying power.)
- Other
- Assembly Required: Partial
- UPC: 050234210232
Observe the night sky in clear detail with this Celestron Cometron FirstScope 21023 telescope, which features a spherical mirror with 76mm aperture for a bright, sharp view. The simple design makes the telescope ideal for beginner-level stargazers.
- 11-180x useful magnification and 76mm-diameter objective lens: Brings a wide range of celestial objects into close focus, so you can examine the Moon's mountains and craters in sharp detail.
- 300mm focal length and 3.95 focal ratio: Create a large field of view, allowing you to observe wide swaths of the night sky.
- Dobsonian design: Features a spherical mirror with a 76mm aperture to gather ample light.
- Compact tabletop design: Occupies minimal space on a desk or bookshelf and allows easy portability.
Whats Included
- Celestron Cometron FirstScope Reflector Telescope
- 2 eyepieces
- Base, finderscope
- TheSkyX astronomy software DVD-ROM
