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Celestron 21056-K - Optional Accessories; Specifications

Celestron 21056-K
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OPTIONAL ACCESSORIES
You will find that additional accessories for your PowerSeeker telescope will enhance your viewing pleasure and expand the usefulness of your telescope. This is just a short
listing of various accessories with a brief description. Visit the Celestron website or the Celestron Accessory Catalog for complete descriptions and all accessories available.
Sky Maps (# 93722) – Celestron Sky Maps are the ideal teaching guide for learning the night sky. Even if you already know your way around the major constellations,
these maps can help you locate all kinds of fascinating objects.
Omni Plossl Eyepieces – These eyepieces are economically priced and offer razor sharp views across the entire field. They are a 4-element lens
design and have the following focal lengths: 4mm, 6mm, 9mm, 12.5mm, 15mm, 20mm, 25mm, 32mm, and 40mm – all in 1.25” barrels.
Omni Barlow Lens (# 93326) – It doubles the magnification of that eyepiece. A Barlow lens is a negative lens that increases the focal length of a
telescope. The 2x Omni is a 1.25” barrel, is under 3” (76mm) long, and weights only 4oz. (113gr.).
Moon Filter (# 94119-A) – This is an economical 1.25” eyepiece filter for reducing the brightness of the moon and improving contrast, so greater
detail can be observed on the lunar surface.
UHC/LPR Filter 1.25” (# 94123) – This filter is designed to enhance your views of deep sky astronomical objects when viewed from urban areas.
It selectively reduces the transmission of certain wavelengths of light, specifically those produced by artificial lights.
Flashlight, Night Vision (# 93588) The Celestron flashlight uses two red LED’s to preserve night vision better than red filters or
other devices. Brightness is adjustable. Operates on a single 9-volt included battery.
Collimation Tool (# 94183)Collimating your Newtonian telescope is easily accomplished with this handy accessory which
includes detailed instructions.
Collimation Eyepiece – 1.25” (# 94182) – The collimation eyepiece is ideal for precise collimation of Newtonian telescopes.
Digital Camera Adapter – Universal (# 93626) – A universal mounting platform that allows you to do afocal photography (photography through the
eyepiece of a telescope) with your digital camera.
T-Adapter – Universal 1.25” (# 93625) – This adapter fits the 1.25” focuser of your telescope. It allows you to attach your 35mm (D)SLR camera for lunar and
planetary photography
.
2835 Columbia Street
Torrance, CA 90503 U.S.A.
Tel. (310) 328-9560
Fax. (310) 212-5835
Website: www.celestron.com
Copyright 2009 Celestron All rights reserved. (Products or instructions may change without notice or obligation.)
Item # 21056-K-INST Printed in China $10.00 10-09
SPECIFICATIONS
21056-K PS 114AZ
Optical Design Newtonian
Aperture 114mm (4.5")
Focal Length 900mm
Focal Ratio f/8
Optical Coatings fully coated
Finderscope Star Pointer Red Dot
Eyepieces - 1.25” 25mm (36x), 20mm (45x), 12.5mm (72x), 8mm (113x), 4mm (225x)
Apparent FOV -- 25mm @ 24°, 20mm @ 22°, 12.5mm @ 30°, 8mm @ 30°, 4mm @ 33°
Barlow Lens - 3x – 1.25” w/25mm (108x), w/4mm (675x)
Angular Field of View w/25mm eyepiece 0.67°
Linear FOV w/25mm eyepiece -ft/1000yds 35
Mount Altazimuth
Altitude Locking Knob yes
Azimuth Lock yes
CD-ROM "The SkyX" yes
Highest Useful Magnification 269x
Limiting Stellar Magnitude 12.8
Resolution -- Raleigh (arc seconds) 1.21
Resolution -- Dawes Limit " " 1.02
Light Gathering Power 265x
Optical Tube Length 35" (89cm)
Telescope Weight 15# (6.8kg)
Note: Specifications subject to change without notice or obligation

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