Celestron® Firstscope Telescope
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High-quality, Dobsonian-style stand with a 3 in. (76 mm) aperture reflector optical tube make this scope an ideal entry level astronomical telescope. Portable and lightweight tabletop design makes it easy to store, transport, and setup. Very easy to use for observation - simply navigate the night sky by moving the tube in the direction of the desired object. Displayed around the exterior of the tube are the names of history’s most notable astronomers and scientists.
Specifications
Optical Design: Newtonian reflector
Aperture: 3 in. (76 mm)
Focal length: 12 in. (300 mm)
Focal Ratio: 3.95
Focal Length of Eyepiece 1: 3/4 in. (20 mm)
Magnification of Eyepiece 1: 15X
Focal Length of Eyepiece 2: 1/8 in. (4 mm)
Magnification of Eyepiece 2: 75X
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
Two-year warranty.
| Brand | Celestron |
|---|---|
| Item Weight | 5.20 lbs |
| Length | 16.00 |
| Width | 10.00 |
| Height | 10.00 |
| Manufacturer | Celestron International |
| Mfg Part No | 21024 |
| GTIN/UPC | 050234210249 |
| Prop 65 |
|
| Subject Areas | Astronomy |
This website is closing 9/10/26, but Nasco products are now available from School Specialty.