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The following is a partial list of optional accessories available for your Celestron
C5 spotting scope. You will find that additional accessories enhance your
viewing pleasure and expand the usefulness of your spotting scope.
Barlow Lens - A Barlow lens is a negative lens that increases the focal length of
a telescope. Used with any eyepiece, it doubles the magnification of that
eyepiece. Celestron offers two Barlow lens in the 1-1/4" size for the C5. The 2x
Ultima Barlow (#93506) is a compact triplet design that is fully multicoated for
maximum light transmission and parfocal when used with the Ultima eyepieces.
Model #93507 is a compact achromatic Barlow lens that is under three inches
long and weighs only 4 oz. It works very well with all Celestron eyepieces.
CD-ROM (93700) - Celestron and Software Bisque have joined together to
present this comprehensive CD-ROM called The Sky™ Level 1 - from Celestron.
It features a 10,000 object database, 75 color images, horizontal projection,
custom sky chart printing, zoom capability and more! A fun, useful and
educational product. PC format.
Eyepieces - Like telescopes, eyepieces come in a variety of designs. Each design
has its own advantages and disadvantages. For the 1-1/4" barrel diameter there
are four different eyepiece designs available.
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OMNI Plöss
l -
Plössl eyepieces have a 4-element lens designed for low-to-high
power observing. The Plössls offer razor sharp views across the entire field, even at
the edges! In the 1-1/4" barrel diameter, they are available in the following focal
lengths: 4mm, 6mm, 9mm, 12.5mm, 15mm, 20mm,
25mm, 32mm and 40mm.
•
X-Cel -
This 6 element design allows each X-Cel
Eyepiece to have 20mm of eye relief, 55° field of
view and more than 25mm of lens aperture (even
with the 2.3mm). In order to maintain razor sharp,
color corrected images across its 55° field of view,
extra-low dispersion glass is used for the most highly
curved optical elements. The excellent refractive
properties of these high grade optical elements, make
the X-Cel line especially well suited for high
magnification planetary viewing where sharp, color-
free views are most appreciated. X-Cel eyepiece
come in the following focal lengths: 2.3mm, 5mm,
8mm, 10mm, 12.5mm, 18mm, 21mm, 25mm.
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