Bedienungsanleitung Celestron Omni XLT 150 (Seite 48 von 62) (Englisch)

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You will find that additional accessories for your Omni telescope will enhance your viewing pleasure and

expand the usefulness of your telescope. This is just a short listing of various accessories. Visit the Celestron

website for complete and detailed accessories available.

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 several Barlow lenses in the 1-1/4"

size. The 2x Ultima Barlow (# 93506) is a compact triplet design that is fully multicoated for maximum light

transmission. The Omni Barlow (# 93326) is a compact achromatic Barlow lens that is less than three inches

long and weighs only 4 oz. and it works very well with all Celestron eyepieces.

Collimation Eyepiece 1 ¼” – # 94182 -- The collimation eyepiece is ideal for precise collimation of Newtonian

telescopes and helpful for aligning Schmidt-Cassegrains. This special eyepiece fits into 1 ¼” focusers and

diagonals.

Eyepieces - Like telescopes, eyepieces come in a variety of designs. Each design has its own advantages and

disadvantages. Below are just some of the eyepieces 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

eyepieces come in the following focal lengths in 1 ¼” barrels: 2.3mm, 5mm,

8mm, 10mm, 12.5mm, 18mm, 21mm, and 25mm.

Filters Sets, Eyepiece -- 1 ¼”- Celestron offers four convenient filter sets, which

contain four different filters per set. Not only are these highly useful filter

combinations, but they also are 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)

Series 3 – # 94119-30

Light Red, Blue, Green, ND50% T (#s 23A, 38A, 58, 96ND-50)

Series 4 – # 94119-40

Yellow, Deep Yellow, Violet, Pale Blue (#s 8, 47, 82A, 96ND-13)

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