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Question posted by jajostenik on June 13th, 2022

Set Screws For Telescope

I am missing the thumb screws for the lens and for the 90 degree angle mirrors on our celestron omni telescope. Without the the 90 degree morror falls out when we try to use it. Is there a way to get these two set screws? What size are they and what are they called?

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Answer #1: Posted by SonuKumar on June 13th, 2022 9:43 PM

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Related Celestron Omni XLT AZ 102 Manual Pages

Instruction Manual - Page 1

Omni XLT Series Telescopes INSTRUCTION MANUAL ● Omni XLT 102 ● Omni XLT 120 ● Omni XLT 150 ● Omni XLT127

Instruction Manual - Page 4

... different models --- 102mm refractor, 120mm refractor, 150mm Newtonian, 127mm Schmidt-Cassegrain. The Omni XLT deluxe features combined with a rugged and very stable stainless steel tripod. • Ball bearings in both axes of telescopes come in superior images. • Premium Celestron Starbright XLT optical coatings that provide maximum contrast and image sharpness. • Heavy-duty...

Instruction Manual - Page 5

Optical Tube 2. Finderscope 4. Eyepiece 5. Equatorial Mount 6. Counterweights 10. Objective Lens Shade 5 Latitude Adjustment Screw 7. 1.75" Steel Tripod 8. Counterweight Bar 11. Tube Rings 3. 12 11 10 9 1 2 3 4 5 6 7 8 Figure 1-1 Omni XLT 102 Refractor (Omni XLT 120 Refractor similar) 1. Accessory Tray/ Leg Brace 9. Dovetail Slide Bar 12.

Instruction Manual - Page 8

...Celestron Omni XLT telescope. Your Omni telescope should be set up indoor the first time so that the tripod leg can be the most rigid and stable at the top. The Omni tripod comes with an all the Omni telescope ... tripod from the tripod head that holds the legs together at the lowest height. Each Omni telescopes comes in two boxes. knob, dec. In addition, there is a central rod that...

Instruction Manual - Page 9

... telescope's axis of rotation so that you can rotate the mount slightly but the center position (where the front latitude adjustment screw is...screws on the tripod head so that attaches to the central rod) on the tripod. Then tighten the azimuth adjustment screws. 5. Tripod Head Equatorial Mount Alignment Peg Mounting Knob Figure 2-4 Azimuth Adjustment Screws Figure 2-5 9 The Omni...

Instruction Manual - Page 11

.... 2. Use whichever one on the side of the counterweight. 3. Orient the mount so that the threads do not protrude through the knob shaft opening. slow motion knob is pointing towards north before the tube assembly and counterweights are identical) and make sure the screw on the R.A. Attaching the Slow Motion Knobs The Omni...

Instruction Manual - Page 12

...telescope, something which is attached to use, then reinstall the knob that is pointing toward the top of the mount, just below the telescope...knob and the mounting safety screw on the side of the mounting bracket. To mount the telescope tube: 1 Remove the ...protective paper covering the optical tube. NOTE: Never loosen any of the knobs on the Omni mounting...

Instruction Manual - Page 13

...lens is toward the front (open ) end of the telescope. The Omni Schmidt-Cassegrain normally comes with the finderscope body. 4. Hold the visual back with a set screw in the finderscope. 2. If you want to the telescope...the visual back over the eyepiece end of the way up into the bracket. 6. Loosen the finderscope adjustment screws so they make contact with the visual back installed...

Instruction Manual - Page 14

... To attach the star diagonal onto the optical tube of the barrel. Tighten the set screw on the visual back to change the orientation of the star diagonal, loosen the set screw on the star diagonal to use the telescope visually. Tighten the set screw on the eyepiece adapter so that it with other optional eyepieces. 14 C. You...

Instruction Manual - Page 17

... the other. Then tighten the rear adjustment screw to raise the mount to always make final adjustments in altitude by moving the mount against gravity (i.e. Turn the azimuth adjustment knobs located on the Omni mount has a range from approximately 20° going up the telescope and tripod and move it will go. Keep...

Instruction Manual - Page 21

... for example, you simply divide the focal length of your telescope. Dividing 1000 by 60 gives a maximum useful magnification of 240 power. Because of this procedure should be used for the Omni XLT 102 telescope. and DEC clamps and point the telescope at your target. 3 Center your telescope the same way. 21 In equation format, the formula looks like this...

Instruction Manual - Page 22

... reduced. This produces a linear field width of 65.6 feet at all Omni XLT telescopes. This includes asphalt parking lots on hot summer days or building rooftops. ... Using the example in thickness from one thousand yards. This yields an actual field of view, you must be able to the next. To convert degrees ...using the same 25mm eyepiece that Celestron manufactures is found in the...

Instruction Manual - Page 25

...angle the polar axis is pointing north. 2. It will read +90°. Pointing at Polaris This method utilizes Polaris as a guidepost to 60 degrees (see figure 5-3). Although this , imagine that the polar axis is pointing. Set the telescope... telescope using ...way to polar align a telescope is pointing due north. Now, let's say that you move the telescope...the horizon). The Omni CG-4 mount can...

Instruction Manual - Page 28

... with known coordinates. Look up the coordinates of the scale. Move the telescope in a star atlas or reference book. 3. clamp. 7. Setting Circle Before you are using the Celestron Sky Maps (#93722) or consulting a current astronomy magazine. setting circle will need to prevent the telescope from the celestial pole the better your polar alignment. 1. Look through the...

Instruction Manual - Page 30

.... For the Schmidt-Cassegrain telescope, the optional Reducer/Corrector lens allows for observing. Observing the Planets Other fascinating targets include the five naked eye planets. You will affect your telescope set up, you are observing). So, avoid observing the planets when they are usually the limiting factor on the planetary surface, try using Celestron eyepiece filters. 30...

Instruction Manual - Page 33

... popular and you don't need a cable release with the exposure or not. Through piggyback photography you can use the piggyback adapter screw located on the market today. Polar align the telescope (using digital cameras, experiment with various settings and read the camera instructions as Lunar and Planetary photography have to the specific accessories required for...

Instruction Manual - Page 34

...accept a 35mm camera body. The T-Ring replaces the 35mm SLR camera's normal lens. Start with the SLR camera attached to begin recording celestial objects. Find a suitable...Release the shutter using the proper filter) as well as you to the infinity setting. 5. The focuser for Refractors & Newtonians Short exposure prime focus photography is the best way to the telescope without affecting ...

Instruction Manual - Page 38

...use films that are mounted directly to set your hands clear of the camera and lens, thus eliminating the possibility of a second when hand-holding the lens. They reduce the vibration amplitude and vibration time. 38 Your telescope... Metering The Omni Series telescopes have been written on how to evolve with the Vibration Suppression Pads (#93503). If the lens is virtually ...

Instruction Manual - Page 39

... of the lens. If your telescope during an observing session. Your Omni refractor was properly aligned at its best. Then, use an optical cleaning solution and white tissue paper to four seconds. Occasionally, you may experience dew build-up on the objective lens, the corrector plate, or primary mirror depending on low setting) or by the Celestron repair...

Instruction Manual - Page 42

... be looking through it 's silhouetted against the view of the mirrors should be optimized by Celestron. With the focus pulled in the secondary mirror, adjust the secondary mirror screws by loosening and tightening the three screws, placed 120 degrees apart, at the back end of the primary mirror is built to judge. If seeing (i.e., air steadiness) is turbulent...