The Celestron Cosmos FirstScope 76mm Newtonian Reflector Telescope is a table-top telescope featuring a Newtonian reflector optical design. The 3" objective mirror and 300mm focal length make this beginner telescope suitable for lunar, planetary and limited deep-space viewing.
The telescope comes with two fully multicoated 1.25" diameter Kellner eyepieces. The 10mm eyepiece provides a high 30x magnification, while the 20mm produces 15x magnification. These two eyepieces offer a range of viewing options depending on what you are looking at.
A red-dot StarPointer finderscope has a ultra-wide field of view that helps find what you're looking for and gets you viewing faster. The table-top alt-azimuth mount gives you easy control of the telescope for tracking slow objects like nebulae or fast moving subjects like comets. This telescope is easy to assemble and transport, so you can spend less time setting up and more time enjoying the night sky.
This special edition of the FirstScope features the COSMOS eye nebula design prominently displayed on the optical tube, making it visually dynamic when it's out in field or displayed on a shelf. The scope comes with a free downloadable planetarium app for Android or iOS devices and a color Cosmic Calendar.
|Aperture:||76 mm (2.99")|
|Focal Length:||300 mm (12")|
|Focal Length of Eyepiece 2 (mm):||Kellner 10 mm (0.39" )|
|Highest Useful Magnification:||180 x|
|Light Gathering Power:||118 x (Compared to human eye)|
|Limiting Stellar Magnitude:||11.9|
|Lowest Useful Magnification:||11 x|
|Optical Coatings:||Aluminum with SiO2|
|Optical Design:||Newtonian Reflector|
|Optical Tube Length:||10" (254 mm)|
|Resolution (Dawes):||1.53 arc seconds|
|Resolution (Rayleigh):||1.83 arc seconds|
|Secondary Mirror Obstruction:||1.1" (28 mm)|
|Secondary Mirror Obstruction by Area:||14 %|
|Secondary Mirror Obstruction by Dia.:||37 %|
|Total Telescope Kit Weight:||4.3 lbs (1.95 kg)|