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You will find that additional accessories enhance your viewing pleasure and expand the usefulness of your
telescope. For ease of reference, all the accessories are listed in alphabetical order.
Adapter, Car Battery (#18769) - Celestron offers the Car Battery Adapter that allows you to run the NexStar drive off
an external power source. The adapter attaches to the cigarette lighter of your car,
truck, van, or motorcycle.
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 NexStar. 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.
Erect Image Diagonal (#94112-A) - This accessory is an Amici prism arrangement
that allows you to look into the telescope at a 45° angle with images that are oriented
properly (upright and correct from left-to-right). It is useful for daytime, terrestrial
viewing.
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.
• Super Modified Achromatic (SMA) Eyepieces: 1 ¼"
The SMA design is an improved version of the Kellner eyepiece. SMAs are very good, economical, general purpose
eyepieces that deliver a wide apparent field, good color correction and an excellent image at the center of the field of
view. Celestron offers SMA eyepieces in 1-1/4" sizes in the following focal lengths: 6mm, 10mm, 12mm, 17mm and
25mm.
• NexStar Plössl - 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: 3.6mm, 6mm,
8mm, 10mm, 13mm, 17mm, 25mm, 32mm and 40mm.
• Ultima - Ultima is our 5-element, wider field eyepiece design. In the 1-
1/4" barrel diameter, they are available in the following focal lengths:
5mm, 7.5mm, 12.5mm, 18mm, 30mm, 35mm, and 42mm. These
eyepieces are all parfocal. The 35mm Ultima gives the widest possible
field of view with a 1-1/4" diagonal.
• Axiom – As an extension of the Ultima line, a new wide angle series is offered – called the Axiom series. All units are
seven element designs and feature a 70º extra wide field of view ( except the 50mm). All are fully multicoated and
contain all the feature of the Ultimas.