15
D. To clean the outside of the objective lens, you may use an optical lens cleaning kit (available at most photo
stores) or the Celestron LensPen (#93575) cleaning tool.
SPECIFICATIONS AND STANDARD ACCESSORIES
Model #21072
Optical System: Refractor
Aperture: 80mm
Focal Length: 400mm
F/ratio: f/5
Focuser
1¼" Rack and Pinion
Standard Ocular
25mm 1¼” eyepiece
Magnification with standard eyepieces 16x
Highest Useful Power Magnification: 189x
NOTE: Specifications are subject to change without notice.
9. OPTIONAL ACCESSORIES
Celestron International offers a wide assortment of optional accessories to expand your interests.
A. Sky Maps (#93722) - Invaluable when learning the night sky. They include all the constellations with the
brighter deep-sky objects. On the front cover is a rotating planisphere which indicates when specific
constellations are visible.
B. Flashlight - LED (#93588) - Uses a red LED to allow reading star maps and locating telescope accessories
and controls without ruining you night vision.
C. Eyepieces - A whole assortment of 1¼" eyepieces are available to give you a wide range of magnifications.
D. A 1¼" Standard 2x Barlow Lens (#93507) is available as well as a deluxe 2x model (#93506).
E. Erect Image Diagonals
Mainly used for terrestrial applications where the correct image is seen (you see
through the telescope exactly what you see with your eye). A 45º model is available (#94112-A) as well as
a 90º model (#94108).
F. Planisphere & Planet Guide (#93720)
Simple and easy to use to find your way around the sky. Available
in various latitude ranges
30º (20 – 40º), 40º (30 – 50º), 50º (40 – 60º).
G. Other accessories are available. See the Celestron Accessory Catalog (#93685) or ask your Celestron
dealer for details.
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