24
OPTIONAL ACCESSORIES
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.
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. 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. The OMNI Barlow (#93326) 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.
Collimation Eyepiece (#94182)
– The Celestron Cheshire eyepiece is ideal for precise collimation of Newtonian
telescopes. This special eyepiece fits into any 1 ¼” focuser. Alignment is easy using the small opening on one
end and thin crosshairs at the other end. The collimation eyepiece provides more accuracy than the simple
collimation tool.
Exotherm (#93504)-
Perfect for chilly evenings outdoors camping, stargazing, or at
sporting events, the Exotherm hand warmer is convenient, reusable and made
from nontoxic materials. Heat lasts up to 1 hour.
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.
•
OMNI 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: 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.
•
Ultima
-
Ultima is our 5-element, wide field eyepiece design. In the 1-1/4"
barrel diameter, they are available in the following focal lengths: 5mm, 7.5mm,
10mm, 12.5mm, 18mm, 30mm, 35mm, and 42mm. These eyepieces are all
parfocal.
•
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 features of the Ultimas.
Filters Sets
,
Eyepiece
-
Celestron offers four convenient filter sets, which contain
four different filters per set. Not only are these highly useful filter combinations,
but they also offer an economical way to add versatility to your filter collection.
Series 1 – #94119-10
Orange, Light Blue, ND13%T, Polarizing (#s 21, 80A, #15, Polarizing)
Series 2 – #94119-20
Deep Yellow, Red, Light Green, ND25% T (#s 12, 25, 56, 96ND-25)
