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National Park Foundation FirstScope Telescope

Original price was: $79.95.Current price is: $23.99.

Description
  • Special edition National Park Foundation wrap on optical tube
  • Lightweight and portable, a great grab-and-go telescope
  • Simple design makes it easy for beginners to use
  • No-tool setup means you are observing in no time
  • Includes two eyepieces, free SkyPortal mobile app and National Parks Guidebook download
Specifications

Optical Tube Info:
Optical Design: Newtonian Reflector | Spherical Primary Mirror
Aperture: 76mm (3″)
Focal Length: 300mm (11.81″)
Focal Ratio: f/4
Focal Length of Eyepiece 1: 20mm (0.79″)
Magnification of Eyepiece 1: 15x
Focal Length of Eyepiece 2: 10mm (0.16″)
Magnification of Eyepiece 2: 30x
Barlow Lens: Not Included
Finderscope: Not Included
Star Diagonal: Not Included
Optical Tube: Plastic
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
Secondary Mirror Obstruction: 28mm (1.1″)
Secondary Mirror Obstruction by Diameter: 37%
Secondary Mirror Obstruction by Area: 14%
Optical Coatings: Aluminum with SiO2
Optical Tube Length: 266mm (10.5″)
Optical Tube Diameter: 95.25mm (3.75″)
Optical Tube Weight: 1.4 lbs (0.64 kg)
Dovetail: N/A
Mount Info:
Mount Type: Manual Tabletop Dobsonian
Height adjustment range (includes mount and tripod): N/A
Tripod Leg Diameter: N/A
Slew Speeds: Manual
Tripod Weight: N/A
Dovetail Compatibility: N/A
Software: Celestron Starry Night Basic Edition Software, and SkyPortal App
Total Kit Weight: 4.3 lbs (1.95 kg)
Included Items: Optical tube
Dobsonian Mount
10mm and 20mm Eyepieces
Free National Parks Guidebook Download
Additional Information
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.

California Prop 65 California Prop 65 Warning

WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov

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