Ultima 9
1
/
4
and Ultima 11 Manual
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 Kelner eyepiece. SMA’s are very good,
economical, general purpose eyepieces. Available in the focal lengths 6mm, 10mm, 12mm, and 25mm.
•
Plössl - Plössl eyepieces have a 4-element lens designed for low-to-high power observing. The Plössl’s
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 the C8 with or without 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 Lanthunum glass reduces aberrations to a minimum. All are fully
multicoated and have an astounding 20mm of eye relief-perfect for eyeglass wearers! They are
available in the 1-
1
/
4
” barrel diameter in the following focal lengths: 2.5mm, 4mm, 5mm, 6mm, 9mm,
10mm, 12mm, 15mm. Also available is an LV Zoom Eyepiece with the focal length range of 8 to
24mm.
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
finder, 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. Another option
is the 9x50 Finder
(93783-8). This includes the finder, and the finder bracket. There is also a Quick
Release Finder bracket
(#51149-A) which allows you to easily remove and replace the finderscope without
loosing 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 in the main telescope.
Flashlight (#93592) - The LED flashlight uses a red LED to allow reading star maps without ruining your
night vision. The LED flashlight is small, only 6 inches long, and weighs in at a mere 3 ounces.
Flashlight, Night Vision (#93588) - Celestron’s premium model for astronomy, using two red LEDs to
preserve night vision. The brightness is adjustable and it operates on a single 9V battery.
Light Pollution Reduction (LPR) Filters - These filters are designed to enhance your views of deep-sky
astronomical objects when viewed from urban areas. LPR Filters selectively reduce the transmission of
certain wavelengths of light, specifically those produced by artificial lights. This includes mercury and high
and low pressure sodium vapor lights. In addition, they also block unwanted natural light (sky glow) caused
by neutral oxygen emission in our atmosphere. Celestron offers a model for 1-l/4" eyepieces (#94126A)
and a model that attaches to the rear cell ahead of the star diagonal and visual back (#94127A).
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
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