Orion SkyQuest XT10 Classic Instruction Manual
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Orion SkyQuest XT10 Classic Instruction Manual

9708 dobsonian reflecting telescope
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INSTRUCTION MANUAL
Orion
®
SkyQuest
XT10 Classic
™
#9708 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. D 05/07

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Summary of Contents for Orion SkyQuest XT10 Classic

  • Page 1 INSTRUCTION MANUAL Orion ® SkyQuest XT10 Classic ™ #9708 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. D 05/07...
  • 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 Ground baseplate...

  • Page 3: Table Of Contents

    In the event that the telescope needs to be shipped to Self-adhesive rubber bumper another location, or returned to Orion for warranty repair, hav- Large hex-head screw (length 3") ing the proper shipping containers will help ensure that your telescope will survive the journey intact.

  • 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 Dobsonian base. The springs will remain captive on the alti- tude side bearings, so they will not get lost. Installing the Finder Scope The SkyQuest XT10 comes with a high-quality 9x50 right- angle correct-image achromatic finder scope (Figure 8a) as standard equipment.

  • Page 7: Focusing The Telescope

    2" eyepiece adapter 1.25" eyepiece adapter Focus lock thumbscrew Altitude Tension adjustment screw Figure 9. The 2" Crayford focuser with eyepiece adapters attached. the focuser will accept eyepieces with barrel diameters of 1.25" and 2". screw on the 1.25" eyepiece adapter. The other eyepiece can Azimuth be placed in the eyepiece rack until it is needed.

  • Page 8: Aligning The Finder Scope

    Focusing the Finder Scope portion of the full field. If they do, you can easily observe with your glasses off by just refocusing the telescope the needed If, when looking through the finder scope, the images appear amount. If you suffer from severe astigmatism, however, you somewhat out of focus, you will need to refocus the finder may find images noticeably sharper with your glasses on.
  • Page 9 Figure 12. higher magnifications than a smaller aperture telescope. The maximum practical magnification for any telescope, regard- can carry the tube less of optical design, is about 60x per inch of aperture. This by grasping the translates to about 600x for the SkyQuest XT10. tube with one hand while grasping the Keep in mind that as magnification is increased, the bright-...

  • Page 10: Collimation (Aligning The Mirrors)

    The center mark is also required for best results when Collimation is the process of adjusting the mirrors so they using other collimating devices, such as Orion’s LaserMate are properly aligned with one another. Your telescope’s optics Laser Collimator, obviating the need to remove the primary were aligned at the factory, and should not need much adjust- mirror and mark it yourself.
  • Page 11 Figure 15. To center the secondary mirror under the focuser, hold Figure 18. The tilt of the primary mirror is adjusted by turning one the secondary mirror holder in place with your fingers while adjusting or more of the three spring-loaded collimation thumb screws. the center screw with a Phillips screwdriver.

  • Page 12: Astronomical Observing

    5. Astronomical Observing Now, try tightening or loosening one of the larger collima- tion thumbscrews with your fingers (Figure 18). Look into the focuser and see if the secondary mirror reflection has moved For many users, the SkyQuest XT10 telescope will be a major closer to the center of the primary.
  • Page 13 (M4-.7) where a fan can be By using eyepieces of varying focal lengths, it is possible attached. Orion sells a fan for the SkyQuest XT10; consult to attain many magnifications with the SkyQuest XT10 the Orion catalog or telescope.com for details.
  • Page 14 VENUS At its brightest, Venus is the most luminous object in You’ll be stunned at the wide fields of view that 2" eyepieces can deliver. It will make you feel like you’re floating through space! the sky, excluding the Sun and the Moon. It is so bright that sometimes it is visible to the naked eye during full daylight! A.

  • Page 15: Care And Maintenance

    Certain photographic aids, such as the Orion SteadyPix, can help in taking photos Figure 20. Starhopping is a good way to locate hard-to-find by the afocal method.

  • Page 16: Specifications

    7. Specifications scope with the dust cover when it is not in use will prevent dust from accumulating on the mirrors. Improper cleaning can scratch mirror coatings, so the fewer times you have to clean Primary mirror: 254mm diameter, 1200mm focal length, BK7 the mirrors, the better.
  • Page 20 95076. If the product is not registered, proof of purchase (such as a copy of the original invoice) is required. This warranty does not apply if, in Orion’s judgment, the instrument has been abused, mishandled, or modified, nor does it apply to normal wear and tear.

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