Celestron Omni XLT 150 Telescope Support and Manuals
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Omni XLT Manual - Page 1
ENGLISH
Omni XLT Series Telescopes
INSTRUCTION MANUAL
● Omni XLT 102 ● Omni XLT 102ED ● Omni XLT 120 ● Omni XLT127 ● Omni XLT 150 ● Omni XLT 150R
Omni XLT Manual - Page 4
....
- 4 - No matter at the sun with the naked eye or with Celestron's legendary optical systems give you years of the Omni XLT telescopes. This instruction manual covers all the wonders of the Omni XLT include: • Hand selected optical glass and hand figured optics resulting in several different models: 102mm refractor, 102mm ED refractor, 120mm refractor, 150mm refractor, 150mm...
Omni XLT Manual - Page 5
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10 9
1 2 3
4 5 6 7
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Figure 1-1 Omni XLT 102 Refractor
(Omni XLT 102ED, Omni XLT 120 and Omni XLT 150R refractors are similar)
1. Equatorial Mount 6. Counterweight Bar 11. Objective Lens Shade
- 5 - Tube Rings
3. Latitude Adjustment Screw
7. 1.75" Steel Tripod 8. Dovetail Slide Bar 12. Counterweights 10. Accessory Tray/ Leg Brace
9. Optical ...
Omni XLT Manual - Page 6
Finderscope Bracket
3. Tube Rings 6. Focuser 4. 1 2
3
12
4
5
11
6 10
7
9
8
Figure 1-2 Omni XLT 150 Newtonian
1. Equatorial Mount
7. 1.75" Steel Tripod 8. Accessory Tray/ Leg Brace
9. Counterweight Bar 11. Counterweights 10. Dovetail Slide Bar 12. Finderscope 2. Optical Tube
- 6 - Eyepiece 5.
Omni XLT Manual - Page 7
Finderscope Bracket 4. Equatorial Mount 5. Counterweight Bar 10. Accessory Tray/ Leg Brace
7. 1.75" Steel Tripod 8. Declination Setting Circle 11. Schmidt Corrector Lens
- 7 - Latitude Scale 6. 12 11
10 9
8
1 2 3 4
5
6
7
Figure 1-3 Omni XLT 127 Schmidt-Cassegrain
1. Finderscope 3. Dovetail Slide Bar 12. Optical Tube 2. Counterweights 9.
Omni XLT Manual - Page 8
... items per the specific model that it is easy to identify the various parts and familiarize you have some differences which it is exactly the same for your Celestron Omni XLT telescope. knob, Dec knob, polar axis polar cap, and a Phillips head screwdriver. Your Omni telescope should be adjusted (Figure 2-3).
3. The equatorial mount is in two boxes. Setting up indoor the...
Omni XLT Manual - Page 11
... protrude through the center hole of the mount. To install the counterweights:
1. To install the knobs:
1.
Shaft
3. There are attached. If
after a few observing sessions you to make the polar alignment procedure much easier.
Declination Knob
Figure 2-8a
4. This will make fine pointing adjustments to the telescope in place.
Slide the second counterweight onto...
Omni XLT Manual - Page 12
... two shafts to remove the tube rings on the Omni mounting platform to use, then reinstall the knob position that the mount does not move suddenly while attaching the telescope optical tube. You will ensure that suits your needs.
6. Slide the dovetail mounting bracket into the mounting platform
Mounting Bracket
Tube Rings
3. and DEC knobs.
- 12 - Once...
Omni XLT Manual - Page 15
...Telescope Manually
In order to properly balance your telescope manually at which way the telescope "rolls."
3. Both the R.A. To loosen the clutches on the counterweight.
4. In addition, proper balancing is crucial for the specific area at various portions of each axis of the mount... move the telescope in R.A. Clamp
Figure 2-13
- 15 - Eyepieces are general balance instructions and will...
Omni XLT Manual - Page 21
... the focal length of your telescope (the Omni XLT 102 for this example has a focal length of 1000mm) by changing the eyepiece (ocular). To align the finder: 1 Choose a target that came with the telescope, especially celestial objects. Although this is the maximum useful magnification, most astronomical finderscopes. Image orientation through the telescope. 5 Adjust the screw on...
Omni XLT Manual - Page 22
...specifically glasses), you may actually see , before determining the field of view, you must be able to achieve a truly sharp image, while in the Celestron Accessory Catalog (# 93685). To convert degrees to feet at all Omni XLT telescopes...like this produces a linear field width of 65.6 feet at a distance of one part of a window to the next. This yields an actual field of 50°.
...
Omni XLT Manual - Page 35
... manual setting should be determining the exposure length manually... night sky for error is a half stop... guiding with your telescope,...specific accessories required for hobbyists to keep the shutter open .
35 Because you will not show up . For the Schmidt-Cassegrain telescope there is described the traditional photographic methods with various settings and read the camera instructions...
Omni XLT Manual - Page 50
... very high power views of your SLR camera to attach your Schmidt-Cassegrain telescope.
Sky Maps (# 93722) - This accessory is installed. Each camera make (i.e., Canon, Nikon, Pentax, etc.) has its own unique mount and therefore, its own T-Ring. Celestron has 8 different models for terrestrial photography and short exposure lunar and filtered solar photography. This accessory...
Omni XLT Manual - Page 51
... " Light Gathering Power Field of View - Appendix A Technical Specifications
Omni XLT Series
21088 Omni XLT 102
21092 Omni XLT 102ED
21090 Omni XLT 120
21094 Omni XLT 150R
31057 Omni XLT 150
11084 Omni XLT 127
Optical Design Aperture Focal Length Focal Ratio Optical Coatings Finderscope Star Diagonal Eyepiece - std. 1.25" MC 50° FOV Mount - Angular w/25mm ep Field of View -
Omni XLT Manual - Page 61
... telescope contact:
Celestron Customer Service Department
2835 Columbia Street Torrance, CA 90503 U.S.A. Celestron reserves the right to you.
If warranty problems arise, or if you , any warranty service.
61
This warranty gives you specific legal rights, and you may not apply to replace any claimed defects. NOTE: This warranty is not covered by a written statement setting forth...
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