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Orion 9843 manual

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Table of contents for the manual

  • Page 1

    INSTRUCTION MANUAL IN 208 Rev . C 02/09 Providing Exceptional Consumer Optical Products Since 1975 Customer Support (800)-676-1343 E-mail: support@telescope.com Corporate Offices (831)-763-7000 89 Hangar W ay , W atsonville, CA 95076 Orion ® SpacePr obe ™ 3 EQ #9843 Equatorial Reflector T elescope[...]

  • Page 2

    2 Figure 1. The SpaceProbe 3 EQ. EZ Finder II EZ Finder II brac ket Declination slo w-motion control cab le Declination loc k knob Declination setting circle Counterweight shaft Counterweight Counterweight lock knob Right Ascension lock knob (not sho wn) Leg loc k knob Eyepiece F ocuser Optical tube assembly Right Ascension setting-circle Right Asc[...]

  • Page 3

    3 T able of Contents 1. Unpacking ........................ 3 2. P ar ts List ......................... 3 3. Assembly ........................ 3 4. Getting Star ted .................... 4 5. Setting up and Using the Equatorial Mount ................... 6 6. Using your T elescope ............... 8 7. Care and Maintenance ............. 10 8. Specifica[...]

  • Page 4

    be on the outside of the tr ipod legs. Secure the wing nuts finger-tight. 2. Install and tighten the leg lock knobs on the bottom br aces of the tripod legs. F or now , keep the legs at their shor t - est (fully retr acted) length; you can extend them to a more desirab le length later , after the tripod is completely assem- bled. 3. Stand the tripo[...]

  • Page 5

    R.A. axis. Rotate it until the counterweight shaft is parallel to the ground (i.e., horizontal) 2. No w loosen the counterweight lock knob and slide the weight along the shaft until it exactly counterbalances the telescope (Figure 3a). That’ s the point at which the shaft remains horizontal ev en when you let go of the telescope with both hands ([...]

  • Page 6

    turning the power knob . For best results when stargazing, use the dimmest possib le setting that allows you to see the dot without difficulty . T ypically , a dim setting is used under dark skies and a bright setting is used under light-polluted skies or in da ylight. At the end of your obser ving session, be sure to tur n the power knob countercl[...]

  • Page 7

    F rom this point on in your obser ving session, you should not make an y fur ther adjustments in the azimuth or the latitude of the mount, nor should you mov e the tripod. Doing so will undo the polar alignment. The telescope should be moved only about its R.A. and Dec. ax es. Use of the R.A. and Dec. Slow-Motion Control Cables The R.A. and Dec. sl[...]

  • Page 8

    8 setting circle . Remember to use the upper set of numbers on the R.A. setting circle. Retighten the lock knob . Most setting circles are not accurate enough to put an object dead-center in the telescope’s ey epiece, but they should place the object some where within the field of view of the find- er scope, assuming the equatorial mount is accur[...]

  • Page 9

    9 Especially impor tant for obser ving faint objects is good “transparency”—air free of moisture, smoke , and dust. All tend to scatter light, which reduces an object’ s brightness. T ransparency is judged b y the magnitude of the faintest stars you can see with the unaided ey e (6th magnitude or f ainter is desirab le). One good wa y to te[...]

  • Page 10

    your telescope will be a lear ning e xper ience . Each time you work with y our telescope it will get easier to use, and stellar objects will become easier to find. T ake it from us, there is big diff erence between looking at a well-made full-color NASA image of a deep-sky object in a lit room during the da ytime, and seeing that same object in yo[...]

  • Page 11

    8. Specifications Optical tube: Steel Primar y mirror diameter : 76mm Primar y mirror coating: Aluminum with silicon dioxide (SiO 2 ) ov ercoat Secondar y mirror minor axis: 19.9mm F ocal length: 700mm F ocal ratio: f/9.2 F ocuser : Rac k and pinion, accepts 1.25” e yepieces Eyepieces: 25mm and 10mm Explorer II ey epieces, 1.25” Magnification: [...]

  • Page 12

    the center screw with a larger Phillips head screwdriver (see Figure 9). T ur ning the screw clockwise will mov e the sec - ondar y mirror tow ard the front op en i ng o f t he o p ti ca l t ub e, while tur ning the screw coun - ter-clockwise will move the secondar y mirror toward the primar y mirror . When the secondar y mirror is centered in the [...]

  • Page 13

    13 will need to mak e slight corrections to the telescope’ s position in order to account f or the sky’s apparent motion. Appendix B: Cleaning the Optics Cleaning Lenses Any quality optical lens cleaning tissue and optical lens clean- ing fluid specifically designed f or multi-coated optics can be used to clean the exposed lenses of your e yepi[...]

  • Page 14

    14 T o clean the pr imary mirror , carefully remo ve the mirror cell from the telescope. T o do this, you must loosen the three sc rews fro m t he e nd of th e op tic al tu be t hat ar e f lus h wi th the end of the tube. Completely loosen all three of the flush screws (do not loosen the other three scre ws) until the mirror cell comes out of the t[...]

  • Page 15

    15 One-Y ear Limited W arranty This Orion SpaceProbe 3 EQ is warranted against def ects in materials or workmanship f or a period of one y ear from the date of purchase. This warr anty is f or the benefit of the or iginal retail purchaser only . During this w arranty period Orion T elescopes & Binoculars will repair or replace, at Orion’ s op[...]