Celestron Ultima 8 Instruction Manual page 94

Micro Guide Eyepiece(#94171) - This multipurpose illuminated 12.5mm reticle can be used for guiding deep-sky
astrophotos, measuring position angles, angular separations, and more. The laser etched reticle provides razor sharp
lines and the variable brightness illuminator is completely cordless. The Micro Guide eyepiece produces 163 power
when used with this telescope.
Piggyback Mount (#93598) - The best way to enter the realm of deep-sky photography is via the piggyback
method. Piggyback photography allows you to record constellations and large scale nebulae that don't fit in the field
of your telescope. The piggyback mount allows you to attach a camera to the top of the telescope. This way, the
camera can photograph with its normal or wide angle lens while you guide through the telescope. The piggyback
mount attaches to the rear cell of the telescope next to the finder.
Planisphere (#93720-30/40/50) - A rotating star map which indicates when specific constellations are visible. It
also has removable markers for tracking the movements of solar system objects. There are models for three different
latitudes; 30º, 40º, and 50º.
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.
Quick Release Finder Bracket (#51149-A) - This finder bracket allows you to remove and protect the finderscope
(50mm) from the telescope tube and yet maintain the alignment of the finder to the main telescope.
Radial Guider (#94176) - The Celestron Radial Guider is specifically designed for use in prime focus, deep-sky
astrophotography as well as CCD imaging 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 (#94175).
Reducer/Corrector (#94175) - This lens reduces the focal length of the telescope by 37%, making your Ultima-
2000 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. It also increases the field of view significantly and is ideal for wide-field, deep-
sky viewing. It is perfect for beginning prime focus long-exposure astrophotography. It makes guiding easier and
exposures shorter. It is also a necessity for CCD imaging.
Sky Maps (#93722) - When learning the night sky, the Celestron Sky Maps offer the ideal solution. The maps
include all the constellations and brighter deep-sky objects. The maps are printed on a heavy stock paper that is
moisture-resistant. On the front cover is a rotating planisphere which indicates when specific constellations are
visible.
Skylight Filter (#93621) - The Skylight Filter is used on Celestron Schmidt-Cassegrain telescopes as a dust seal.
The filter threads onto the rear cell of your telescope. All other accessories, both visual and photographic, thread
onto the Skylight Filter. Although it does cut down on a portion of the incoming light, it is a very small amount. It
should be noted, that most Barlow lenses can NOT be inserted into the visual back when the skylight filter is
attached.
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