To enhance the enjoyment of your FirstScope, Celestron offers a FirstScope Accessory Kit (# 21024-ACC) and also various
other accessory items. Details are available on the Celestron website.
FirstScope Specifications
Model # 21024
Optical Design
Newtonian reflector
Aperture
76mm (3.0")
Focal Length
300mm
Focal Ratio
f/4
Optical Coatings
Coated
Eyepieces - 1.25" Barrel
20mm (15x), 4mm (75x)
Apparent FOV -- 20mm @ 25° and 4mm @ 33°
Angular Field of View w/20mm eyepiece
1.7°
Linear FOV w/20mm –ft@1000yds/m@1000m
89/29
Limiting Stellar Magnitude
11.9
Resolution -- Raleigh (arc seconds)
1.82
Resolution -- Dawes Limit " "
1.53
Light Gathering Power
118x
Optical Tube Length
10.5" (26.7cm)
Telescope Weight
69oz (2kg)
Check out an excellent selection of optical equipment & accessories we offer on our website.
