Celestron Cometron Firstscope Telescope - 21023 KIDS & BABYS

Celestron Cometron Firstscope Telescope - 21023

• 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:          10mm (0.4")
• Magnification of Eyepiece 2:        30x
• Barlow Lens:       Not Included
• Finderscope:      5x24
• 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)