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Manual Orion 9966

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  • Orion 9966 - page 1

    IN 256 Rev . A 08/05 Providi ng Excep tional Consumer Optica l Produc ts Since 1975 Customer Support (800) 676-1343 E-mail: support@telescope.com Corporate Offices (831) 763-7000 P .O. Box 1815, Santa Cruz, CA 95061 INSTRUCTION MANUAL Orion ® SkyQuest ™ XT12 Classic #9966 Dobsonian Reflecting T elescope ...

  • Orion 9966 - page 2

    2 Figure 1. The SkyQuest XT12 Classic Dobsonian. Right side panel Secondary mirror holder with 4-vane spider (not visible) Navigation knob Front brace Handle T op baseplate Ground baseplate Finder scope Finder scope bracket Eyepiece Focuser Optical T ube Altitude side bearing CorrecT ension (XT) Friction Optimization System Eyepiece rack Primary mi ...

  • Orion 9966 - page 3

    3 T able of Contents 1. Unpacking ............................................... 3 2. Assembly ................................................. 4 3. Using Y our T elescope .............................. 8 4. Collimation (Aligning the Mirrors) .......... 1 1 5. Astronomical Observing ........................ 13 6. Care and maintenance ............ ...

  • Orion 9966 - page 4

    4 Box #3: Primary Mirror and Cell Qty . Description 1 Primary mirror 1 Mirror cell 3 Collimation knobs 3 Nylon washers 3 Springs 2. Assembly Now that you have unpacked the boxes and familiarized yourself with all the parts in front of you, it’s time to begin assembly . Assembly of the Optical T ube In order to prevent damage to the primary mirror ...

  • Orion 9966 - page 5

    5 of engagement on the shafts . The mirror cell is now ready to be installed into the tube. Assembling the SkyQuest XT12 mirror cell to the tube can be a bit tricky . This is because the large diameter and thin steel of the tube will cause the tube to become somewhat out of round once the rear end ring is removed. T o assemble the mirror cell to th ...

  • Orion 9966 - page 6

    6 tighten them until firm, but be careful not to strip the holes by over-tightening. If you use an electric screwdriver , do final tightening with a standard screwdriver to avoid stripping. 1. Screw the plastic feet into the underside of the ground baseplate (A) using the se lf-tapping wood s crews pr ovid- ed, with a Phillips screwdriver . Insert ...

  • Orion 9966 - page 7

    7 panel of the base you will notice two predrilled starter holes, about 6" apart. T ake the black wood screws and thread them into the starter holes with a Phillips screwdriver . Then you can “keyhole” the eyepiece rack onto the wood screws and con- tinue tightening the screws (Figure 1 1). If you want to be able to remove the rack, do not ...

  • Orion 9966 - page 8

    8 should seat onto the narrow end of the spacer . Repeat this procedure for the other altitude side bearing. 3. Attach a pull loop to the free end of each spring. Slide the loop through the opening in the ring on the end of the spring. 4. Now , pull each spring down using the pull loop, and posi- tion the spring’ s end ring over the head of the P ...

  • Orion 9966 - page 9

    9 lev el, b ut it should be place d on som ewh at flat groun d or pav e- men t t o en sur e s moo th move men t o f t he tele sco pe. Remember , never point the telescope at or near the Sun with- out using a proper solar filter over the front aperture! Altitude and Azimuth The Dobsonian base of the SkyQuest XT12 permits motion of the telescope alon ...

  • Orion 9966 - page 10

    10 screws will be needed until the object comes into the finder scope’s field of view . The SkyQuest XT12’s finder scope uses a spring-loaded bracket that makes alignment of the finderscope very easy . As you turn either of the thumbscrews, the spring in the bracket’s tensioner moves in and out to keep the finder scope secure in the bracket. ...

  • Orion 9966 - page 11

    11 expect the user to compensate for heavier accessories by adding weight to the opposite end of the telescope tube. Such counterweighting systems can be expensive and unwieldy . The CorrecT ension Friction Optimization system of the SkyQuest XT12 Dobsonian, however , solves the finicky bal- ance problem. The spring coils pull the tube down onto th ...

  • Orion 9966 - page 12

    12 has a hole in the cente r and a silv er bot tom. This helps cente r your eye so that collimation is easy to perform. Figures 19b throug h 19e assume you ha ve the collim ation cap in place. In addition to the collimation cap, the primary mirror is marked with a circle at its exact center . This “center mark” allows you to a chi eve a pre cis ...

  • Orion 9966 - page 13

    13 Now , try tightening or loosening one of the larger collima- tion thumbscrews with your fingers (Figure 23). Look into the focuser and see if the secondary mirror reflection has moved closer to the center of the primary . Y ou can tell this easily with the collimation cap and mirror center mark by simply watch- ing to see if the “dot” of the ...

  • Orion 9966 - page 14

    14 3000 feet. Alti tude helps because it decreases the amount of distor tion c ausing atmosp here yo u are lookin g throu gh. A good way to judge if the seeing is good or not is to look at bright stars about 40° above the horizon. If the stars appear to “twinkle”, the atmosphere is significantly distorting the incom- ing light, and views at hi ...

  • Orion 9966 - page 15

    15 bright objects, like planets and double stars. The Moon also takes higher magnifications well. Deep-sky objects, however , typically look better at medium or low magnifications. This is because many of them are quite faint, yet have some extent (apparent width). Deep-sky objects will often disappear at higher magnifications, since greater magnif ...

  • Orion 9966 - page 16

    16 of the stars and locate many pretty double and multiple stars. The famous “Double-Double” in the constellation L yra and the gorgeous two-color double star Albireo in Cygnus are favor- ites. Defocusing a star slightly can help bring out its color . E. Deep-Sky Objects Under dark skies, you can observe a wealth of fascinating deep-sky objects ...

  • Orion 9966 - page 17

    17 possible to take pictures of bright objects. Certain photo- graphic aids, such as the Orion SteadyPix, can help in taking photos by the afocal method. 6. Car e and Maintenance If you give your telescope reasonable care, it will last a life- time. Store it in a clean, dry , dust-free place, safe from rapid changes in temperature and humidity . Do ...

  • Orion 9966 - page 18

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  • Orion 9966 - page 19

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  • Orion 9966 - page 20

    20 One-Y ear Limited W arranty This Or ion Sky Quest X T12 Cla ssic Do bsonian Reflec ting T elesc ope is warrant ed agai nst def ects in materi als or workman - ship for a perio d of one y ear from the date of purch ase. This wa rranty i s for the benefit of the or iginal r etail pu rchaser only . During this warran ty period Orion T eles copes &a ...

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Documents that we receive from a manufacturer of a Orion 9966 can be divided into several groups. They are, among others:
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All of them are important, but the most important information from the point of view of use of the device are in the user manual Orion 9966.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Orion 9966, service manual, brief instructions and user manuals Orion 9966. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Orion 9966.

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A complete manual for the device Orion 9966, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Orion 9966 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Orion 9966.

A complete Orion manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Orion 9966 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Orion 9966, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Orion 9966, that we can find in the current document
3. Tips how to use the basic functions of the device Orion 9966 - which should help us in our first steps of using Orion 9966
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Orion 9966
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Orion 9966 in a specific country, if it was not possible to solve the problem on our own.

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