Celestron 11074-XLT Instruction Manual Download

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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.

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

CPC

. 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.

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.

OMNI Plössl -

Plössl eyepieces have a 4-element lens designed for low-to-high power observing. All are fully multi-coated for

maximum light transmission. These 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.

X-CEL

- Fully Multi-coated. All air-to-glass surfaces have 5 layer multi-coating. Field of view 55°. Six element optical design using

ED glass on most curved elements. Parfocal – little to no focusing adjustments are needed when switching from a low power to high
power eyepiece. 20mm eye relief and soft rubber eyecups. Blackened lens edges to minimizes internal reflection and improved contrast.
Each eyepiece comes in a durable plastic case.

Ultima LX –

Celestron Ultima LX Series parfocal eyepieces feature wide fields of view for high and low

magnifications. 70 º field of view for high and low magnifications and extendable twist-up eyecups - Good for
eyeglass wearers. Available in the following focal lengths: 5mm, 8mm, 13mm, 17mm, 22mm, and 32mm.

Axiom

– Celestron Axiom LX Series parfocal eyepieces

feature scratch resistant, high end design and 80 º fields of view for high and low magnifications. .Retractible
eyecups for ultra-low profile viewing, idea for eyeglass wearers. Available in the following focal lengths:
7mm, 10mm, 15mm, 19mm, 23mm, and 31mm.

Eyepiece, Micro Guide (#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 CPC 11 at f/10 and 163 power with the CPC 8.

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).

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 (#94123) and 2" eyepieces (#94124)

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%.