Celestron CPC Series - Manual (Page 47)

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Moon Filter (#94119-A) - Celestron’s Moon Filter is an economical eyepiece filter for reducing the brightness of the moon and
improving contrast, so greater detail can be observed on the lunar surface. The clear aperture is 21mm and the transmission is about
18%.
PowerTank (#18774) – 12v 7Amp hour rechargeable power supply. Comes with two 12v output
cigarette outlets, built-in red flash light , Halogen emergency spotlight. 120v AC adapter and cigarette
lighter adapter included. Celestron also offers a 17 amp hour models (#18777).
Polarizing Filter Set (#93608) - The polarizing filter set limits the transmission of light to a specific
plane, thus increasing contrast between various objects. This is used primarily for terrestrial, lunar and
planetary observing.
Radial Guider (#94176) - The Celestron Radial Guider® is specifically
designed for use in prime focus, deep sky astrophotography and takes the
place of the T-Adapter. This device allows you to photograph and guide
simultaneously through the optical tube assembly of your telescope. This type of guiding produces the
best results since what you see through the guiding eyepiece is exactly reproduced on the processed film.
The Radial Guider is a “T”-shaped assembly that attaches to the rear cell of the telescope. As light from
the telescope enters the guider, most passes straight through to the camera. A small portion, however, is
diverted by a prism at an adjustable angle up to the guiding eyepiece. This guider has two features not
found on other off-axis guiders; first, the prism and eyepiece housing rotate independently of the camera
orientation making the acquisition of a guide star quite easy. Second, the prism angle is tunable allowing
you to look at guide stars on-axis. This accessory works especially well with the Reducer/Corrector.
Reducer/Corrector (#94175) - This lens reduces the focal length of the telescope by 37%, making your CPC 11 a 1764mm f/6.3
instrument and the CPC 800 a 1280mm f/6.3 instrument. In addition, this unique lens also corrects
inherent aberrations to produce crisp images all the way across the field when used visually. When
used photographically, there is some vignetting that produces a 26mm circular image on the processed
film. It also increases the field of view significantly and is ideal for wide-field, deep-space viewing. It
is also perfect for beginning prime focus, long-exposure astro photography when used with the radial
guider. It makes guiding easier and exposures much shorter.
Sky Maps (#93722) - Celestron Sky Maps are the ideal teaching guide for learning the night sky. You
wouldn’t set off on a road trip without a road map, and you don’t need to try to navigate the night sky
without a map either. Even if you already know your way around the major constellations, these maps
can help you locate all kinds of fascinating objects.
Skylight Filter (#93621) - The Skylight Filter is used on the Celestron CPC telescope as a dust seal. The filter threads onto the rear cell
of your telescope. All other accessories, both visual and photographic (with the exception of Barlow lenses), thread onto the skylight
filter. The light loss caused by this filter is minimal
.
Solar Filter - The AstroSolar® filter is a safe and durable filter that covers the front opening of the telescope. View sunspots and other
solar features using this double-sided metal coated filter for uniform density and good color balance across the entire field. The Sun
offers constant changes and will keep your observing interesting and fun. Celestron offers filters for CPC 800 (#94162).
T-Adapter (#93633-A) - T-Adapter (with additional T-Ring) allows you to attach your SLR camera to the rear cell of your Celestron
CPC. This turns your CPC into a high power telephoto lens perfect for terrestrial photography and short exposure lunar and filtered solar
photography.
T-Ring - The T-Ring couples your 35mm SLR camera body to the T-Adapter, radial guider, or tele-extender. This accessory is
mandatory if you want to do photography through the telescope. Each camera make (i.e., Minolta, Nikon, Pentax, etc.) has its own
unique mount and therefore, its own T-Ring. Celestron has 8 different models for 35mm cameras.
Tele-Extender, Deluxe (#93643) - The tele-extender is a hollow tube that allows you to attach a camera to the telescope when the
eyepiece is installed. This accessory is used for eyepiece projection photography which allows you to capture very high power views of
the Sun, Moon, and planets on film. The tele-extender fits over the eyepiece onto the visual back. This tele-extender works with
eyepieces that have large housings, like the Celestron Ultima series.
Wedge, Heavy Duty (#93655)
– The wedge allows you to tilt the telescope so that its polar axis is parallel to the earth's axis of rotation.
Ideal for using your CPC for guided astrophotography.
A full description of all Celestron accessories can be found in the Celestron Accessory Catalog (#93685).