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Optional Accessories • 67
prism arrangement that, in addition to producing correctly oriented images,
allows you to look into the telescope at a 45° angle, a desirable arrangement
for terrestrial viewing.
Eyepiece Filters - To enhance your visual observations of planetary objects,
Celestron offers a wide range of colored filters that thread into the 1-1/4"
oculars. Available are: #12 Deep Yellow, #21 Orange, #25 Red, #58 Green,
#80A Light Blue, #96 Neutral Density (25% T, and 13% T) and Polarizing
filters. These and other filters are also sold in sets.
Eyepieces - Like telescopes, eyepieces come in a variety of designs. And,
with the advent of different eyepieces, Celestron also has a variety of designs
each with its own advantages and disadvantages. For the 1-1 /4" barrel
diameter there are four different eyepiece designs available.
•SMA - The SMA design is an improved version of the Kellner eyepiece.
SMA’s are very good, economical, general purpose eyepieces. Available in
focal lengths of 6mm, 10mm, 12mm, and 25mm.
•Plossl - Plossl eyepieces have a 4-element lens designed for low-to-high
power observing. The Plossls 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: 6.3mm, 7.5mm, 10mm, 12.5mm, 17mm, 20mm,
26mm, 32mm, and 40mm.
•Ultima - Ultima is not really a design, but a trade name for our 5-element,
wide field eyepieces. In the 1-1/4" barrel diameter, they are available in the
following focal lengths: 5mm, 7.5mm, 12.5mm, 18mm, 24mm, 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 and is ideal for use with the
Reducer/Corrector.
•Lanthanum Eyepieces (LV Series) - Lanthanum is a unique rare earth glass
used in one of the field lenses of this new eyepiece. The Lanthanum glass
reduces aberrations to a minimum. All are fully multicoated and have an
astounding 20mm of eye relief—perfect for eyeglass wearers! In the 1-1/4"
barrel diameter, they are available in the following focal lengths: 2.5mm, 4mm,
5mm, 6mm, 9mm, 10mm, 12mm, 15mm, 20mm and 25mm. Also available is
an LV Zoom Eyepiece with the focal length range of 8 to 24 mm.
In addition to the previously mentioned, there is also a deluxe compact zoom
ocular (#93306) that has a variable focal length of 6.5 to 18mm.
Finderscopes - Finderscopes are used to help you locate objects in the main
telescope. The larger the finderscope, the more you will see, making it easier
to locate objects. One option for finders is the illuminated Polaris 7x50 Finder
(#93785-8P). It comes with the bracket, finderscope, and illuminator. There is
also a Quick Release Finder bracket (#51149-A) which allows you to easily
remove and replace the finderscope without losing alignment. The Quick
Release Bracket is only available for the 9x50 and 7x50 Finderscopes.
Another tool for finding objects in the sky is the Star Pointer (#51630). The
Star Pointer is different from a finderscope in that you can use both eyes when
pointing the telescope at an object. A partially reflective surface projects the
image of an LED illuminated pinpoint into the line of sight. Just align the
illuminated pinpoint with the object you are interested in and the object will be