Celestron NexStar GPS 93507 - Manual (Page 51)

51
• 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 and 15mm. Celestron also offers the LV Zoom eyepiece
(#3777) with a focal length of 8mm to 24mm. It offers an apparent field of 40º at 24mm and 60º at 8mm. Eye relief
ranges from 15mm to 19mm.
Fastar Lens Assembly 8" – (#94180) - For the ultimate in deep-sky imaging, a
Fastar Lens Assembly can be combined with any of Celestron's Fastar compatible
telescope to achieve amazing f/2 wide-field images. Celestron offers the lens
assembly complete with lens assembly, secondary holder and counterweight.
Filters, Eyepiece - To enhance your visual observations of solar system objects,
Celestron offers a wide range of colored filters that thread into the 1-1/4" oculars. Available individually are: #12 deep
yellow, #21 orange, #25 red, #58 green, #80A light blue, #96 neutral density - 25%T, #96 neutral density - 13%T, and
polarizing. These and other filters are also sold in sets.
Flashlight, Night Vision - (#93588) - Celestron’s premium model for astronomy, using two red LED's to preserve night
vision better than red filters or other devices. Brightness is adjustable. Operates on a single 9 volt battery (included).
Red Astro Lite – (#93590) – An economical squeeze-type flashlight fitted with a red cap to help preserve your night vision.
Remove the red cap for normal flashlight operation. Very compact size and handy key chain.
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 1-1/4" 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 12.5mm illuminated 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 224 power when used with the NexStar
11 at f/10 and 163 power with the NexStar 8.
Moon Filter (#94119-A) - Celestron’s Moon Filter is an economical eyepiece filter for reducing
the brightness of the moon and improving contrast, so greater detail can be observed on the lunar
surface. The clear aperture is 21mm and the transmission is about 18%.
Planisphere (#93720) - A simple and inexpensive tool for all levels of observers, from naked eye viewers to users of highly
sophisticated telescopes. The Celestron Planisphere makes it easy to locate stars for observing and is a great planet finder as
well. A map of the night sky, oriented by month and day, rotates within a depiction of the 24 hours of the day, to display
exactly which stars and planets will be visible at any given time. Ingeniously simple to use, yet quite effective. Made of
durable materials and coated for added protection. Celestron Planispheres come in three different models, to match the
latitude from which you’re observing:
For 20° to 40° of latitude #93720-30
For 30° to 50°of latitude #93720-40
For 40° to 60° of latitude #93720-50
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.