Expanded Specifications Celestron Firstscope 76 Telescope

Lens details
Optical Design: Newtonian Reflector
Aperture: 76mm (2.99")
Focal Length: 300mm (12")
Focal Ratio: f/3.95
Focal Length of Eyepiece 1: 20mm (0.79")
Magnification of Eyepiece 1: 15x
Focal Length of Eyepiece 2: 4mm (0.16")
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
Software: Celestron Starry Night Basic Edition Software and SkyPortal App
Solar Warning
  • Never look directly at the Sun with the naked eye or with an optic (unless you have the proper solar filter). Permanent and irreversible eye damage may result.
  • Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it.
  • Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present.