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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 C8-S 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.
RS-232 Cable (#93920)
–
Allows your Advanced Series telescope to be controlled using
a laptop computer or PC. Once connected, the telescope can be controlled using popular
astronomy software programs.
Sky Map
s
(#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.
E
ven 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 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 C8 (#94162) -
The Baader 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.
T-Adapter (#93633-A) -
T-Adapter (with additional T-Ring) allows you to attach your SLR camera to the rear cell of your
Celestron telescope. This turns your telescope 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.
A full description of all Celestron accessories can be found in the Celestron Accessory Catalog (#93685)
