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Related Manuals for ORION TELESCOPES & BINOCULARS SkyQuest XT10 9810
Summary of Contents for ORION TELESCOPES & BINOCULARS SkyQuest XT10 9810
- Page 1 INSTRUCTION MANUAL Orion ® SkyQuest XT10 ™ #9810 Dobsonian Reflecting Telescope Customer Support (800) 676-1343 E-mail: support@telescope.com Corporate Offices (831) 763-7000 P.O. Box 1815, Santa Cruz, CA 95061 Providing Exceptional Consumer Optical Products Since 1975 IN 179 Rev. B 09/03...
- Page 2 Secondary mirror holder with Finder scope 4-vane spider (not visible) Finder scope bracket Eyepiece Focus knob Navigation knob Optical tube Altitude side bearing CorrecTension (XT) Friction Optimization system Right side panel Front brace Eyepiece rack Handle Primary mirror cell Left side panel Top baseplate Foot (3) Ground baseplate...
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Page 3: Table Of Contents
elcome to an exciting new world of adventure! Your SkyQuest XT10 Dobsonian is a high-quality opti- cal instrument designed to bring you dazzling views of the outer reaches of our universe. With special new innovations, such as the CorrecTension (XT) Friction Optimization system, large format focuser, and deluxe accessory package, this telescope represents a giant leap forward in the evolution of the Dobsonian. -
Page 4: Assembly
3. Attach the two sides (C) with the front brace attached to the top baseplate (D) with the remaining six base assem- bly screws in the predrilled holes. Tighten all six screws. 4. Tighten the six side screws installed earlier. 5. - Page 5 Installing the Eyepiece Rack Figure 5. Set the optical The aluminum eyepiece rack is a standard accessory on tube on the “cradle” of the SkyQuest XT10 Dobsonians. It holds three 1.25" eyepieces and base so that the altitude side one 2" eyepiece in a convenient place on the base, within easy bearings on the tube rest on reach while you’re observing.
- Page 6 4. Now, pull each spring down using the pull loop, and posi- tion the spring’s end ring over the head of the Phillips screw (installed in step 1) and onto the narrow part of the nylon spacer, as shown in Figure 7. You needn’t attach both springs simultaneously;...
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Page 7: Using Your Telescope
the O-ring seats just inside the front opening of the bracket Altitude and Azimuth cylinder. Now, release the tensioner and tighten the two black The Dobsonian base of the SkyQuest XT10 permits motion of nylon thumbscrews a couple of turns each to secure the find- the telescope along two axes: altitude (up/down) and azimuth er scope in place. - Page 8 Viewing with Eyeglasses The finder scope alignment needs to be checked before every observing session. This can easily be done at night, before If you wear eyeglasses, you may be able to keep them on viewing through the telescope. Choose any bright star or while you observe.
- Page 9 Figure 12. The magnification provided by the 10mm eyepiece is You can carry 1200mm = 120x the tube by 10mm grasping the The maximum attainable magnification for a telescope is tube with one directly related to how much light its optics can collect. A tele- hand while scope with more light collecting area, or aperture, can yield grasping the...
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Page 10: Collimation (Aligning The Mirrors)
4. Collimation ply adjust the mirror position (described below) until the reflection of the hole in the collimation cap is centered in the (Aligning The Mirrors) ring. The center mark is also required for best results when using other collimating devices, such as Orion’s LaserMate Collimation is the process of adjusting the mirrors so they are Laser Collimator, obviating the need to remove the primary properly aligned with one another. - Page 11 Figure 15. To center the secondary mirror under the focuser, Figure 18. The tilt of the primary mirror is adjusted by turning hold the secondary mirror holder in place with your fingers while one or more of the three spring-loaded collimation thumb screws. adjusting the center screw with a Phillips screwdriver.
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Page 12: Astronomical Observing
focuser and see if the secondary mirror reflection has moved 5. Astronomical Observing closer to the center of the primary. You can tell this easily with the collimation cap and mirror center mark by simply watch- For many users, the SkyQuest XT10 telescope will be a major ing to see if the “dot”... - Page 13 covered until the Sun sets so the tube does not heat greatly Remember that objects appear to move across the field of above the temperature of the outside air. view faster at higher magnifications. This is because the field of view becomes narrower. The SkyQuest XT10 has the ability to mount a small fan to make cooling the tube faster.
- Page 14 You’ll be stunned at the wide fields of view that 2" eyepieces VENUS At its brightest, Venus is the most luminous object in can deliver. It will make you feel like you’re floating through the sky, excluding the Sun and the Moon. It is so bright that space! sometimes it is visible to the naked eye during full daylight! Ironically, Venus appears as a thin crescent, not a full disk,...
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Page 15: Care And Maintenance
the telescope carefully around the immediate vicinity until the object is found. If you have trouble finding the object, start the starhop again from the brightest star near the object you wish to view. This time, be sure the stars indicated on the star chart are in fact the stars you are centering in the eyepiece. -
Page 16: Specifications
Cleaning Mirrors 7. Specifications You should not have to clean the telescope’s mirrors very Primary mirror: 254mm diameter, 1200mm focal length, often; normally once every year or so. Covering the telescope Pyrex mirror with the dust cover when it is not in use will prevent dust from accumulating on the mirrors. - Page 18 One-Year Limited Warranty This Orion SkyQuest XT Dobsonian Reflecting Telescope is warranted against defects in materials or workmanship for a period of one year from the date of purchase. This warranty is for the benefit of the original retail purchaser only. During this warranty period Orion Telescopes &...