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Orion 7817 manual

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  • Page 1

    INSTRUCTION MANUAL IN 296 Rev . B 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 ® SkyV iew Pr o GoT o System #7817[...]

  • Page 2

    2 Figure 1. The SkyView Pro GoT o System (not all par ts on par ts list are shown) Motor control box brack et R.A. GoT o motor cover Dec. GoT o motor cover Dec. GoT o motor Motor control box GoT o hand controller brack et GoT o hand controller Motor cables GoT o hand controller cable R.A. GoT o motor Brass gears[...]

  • Page 3

    3 1. Par ts List Qty . Description 1 Declination (Dec.) GoT o motor assemb ly 1 Right ascension (R.A.) GoT o motor assemb ly 2 Brass gears w/ 2mm soc ket-head set screws 1 Motor control bo x 1 Motor control bo x bracket 1 GoT o hand controller 1 GoT o hand controller cab le (coiled, 30") 1 GoT o hand controller br acket 1 Motor Cable (13"[...]

  • Page 4

    4 2. Remove the R.A. slow-motion control knob from the R.A. worm gear shaft. The slow-motion knob will not be usable once the SkyVie w Pro GoT o system has been installed. All slo w-motion adjustments will be made using the GoT o hand controller . 3. The R.A. GoT o motor assembly is identified by the 4-pin rectangular connector attached to t he mot[...]

  • Page 5

    5 Attaching the Dec. GoT o Motor Bef ore attaching the Dec. GoT o motor dr iv e, the telescope tube must be remov ed from the equatorial mount. 1. Remov e the Dec. slow-motion control knob from the Dec. worm gear shaft. The Slow-motion knob will not be usable once the SkyVie w Pro GoT o system has been installed. All slo w-motion adjustments will b[...]

  • Page 6

    6 4. Make cer tain that the teeth of the smaller gear of the Dec. GoT o motor assembly meshes with the brass gear . Also, make cer tain the gears are not too tightly pressed togeth- er . Y ou can adjust the wa y the gears mesh b y tightening or loosening the soc ket-head cap screw that is used to attach the Dec. GoT o motor assembly to the mount an[...]

  • Page 7

    7 3. The GoT o Hand Contr oller Once aligned, the GoT o hand controller and dual-axis GoT o motors allow you to automatically point y our SkyView Pro mounted telescope at a specific object, or tour the skies with pushbutton simplicity . The user-friendly menu allo ws auto - matic slewing to o ver 13,400 objects . Even ine xperienced astronomers wil[...]

  • Page 8

    8 are used f or data entr y and as quick ref erence keys . T OUR button: T akes y ou on a preset tour of the best night sky objects visible RA TE button: Changes the speed of the motors when the directional b uttons are pressed. There are 10 speeds to choose from, with 0 being the slow est and 9 being the fast - est. UTILITY button: “Hot key” a[...]

  • Page 9

    9 9. Enter y our current local time using the 24 hour cloc k f or mat (e xample: 2:00PM = 14:00). Press ENTER to view the time you entered. If the time is incorrect, press ESC to go back to the pre vious screen. If the time is correct, press ENTER again. 10 . If the date entered in step 8 f alls between March and Nov ember , the hand controller wil[...]

  • Page 10

    10 1. F rom the alignment screen, select “1-Star Align” using the scroll buttons . Press ENTER to confir m your choice . 2. The hand controller will provide a list of stars av ailable in your current sky for you to choose as the first alignment star . Using the scroll buttons, choose a star you are f amiliar with and press ENTER to confir m you[...]

  • Page 11

    11 matically be chosen b y the hand controller for y our vie wing pleasure. Use the scroll buttons to view the diff erent deep- sky objects that are a vailab le for viewing through the tour function. Choose the desired object by pressing ENTER. The LCD screen will displa y the coordinates of the chosen object. Press ENTER again, and the hand contro[...]

  • Page 12

    12 Setup Menu. Set T racking: -Sidereal Rate: Activates trac king at sidereal rate. This is the def ault tracking rate . -Lunar Rate: Activates trac king at lunar rate. -Solar Rate: Activates trac king at solar rate. -PEC + Sidereal: Activ ates sidereal rate tr acking with P eriodic Error Correction. -Stop T racking: Stops trac king. A uto Guide Sp[...]

  • Page 13

    13 Auto Guiding F or astronomical imaging, the SkyView Pro GoT o motor con- trol box has a designated autoguider jack. The pin-outs on the 6 pin modular jac k are SBIG compatible and can be used with most autoguiders av ailable. Ref er to Figure 16 when connecting the autoguider cable to the mount and calibrating the autoguider . Autoguiding speed [...]

  • Page 14

    14 SkyV iew Pr o GoT o Hand Contr oller Menu T r ee[...]

  • Page 15

    15 3. T echnical Specifications Motor drives: Dual-axis, GoT o comput- erized. Operation: Nor thern or Souther n hemisphere A utoguiding rates: 1.25X / 1.5X / 1.75X / 2X sidereal rate P ower requirrement: 1 2V D C, 2 A ( t ip p o si - tive) Motor type and resolution: Microstep dr iv en stepper motors Slew speeds: Rate 0 = 1.5X Rate 1 = 2X Rate 2 = [...]

  • Page 16

    16 Incorrect star alignment, loose R.A. or Dec. lock-knobs , or “cone” error . If the GoT o hand contoller puts the star outside the eyepiece field of view , you need to determine which of these f actors is causing the pointing inaccur acy . T o deter mine if the inaccuracy is caused by “cone” error , simply mov e the telescope about the R.[...]

  • Page 17

    17 Note: This calibration method can be applied to both refract - ing and reflecting telescope designs. Diff erences in the optical path of telescopes do not affect how the telescope tube and tube rings should be adjusted on the mounting plate. Figure 20. gently push the telescope horizontally to deter mine direction of optical axis offset. Figure [...]

  • Page 18

    18 Appendix B: Periodic Err or Corr ection (PEC) (Requires an illuminated reticle ey epiece capable of producing at least 300X magnification when used with your telescope. F or best results, the true field of view should not e xceed 10 arcminutes.) P eriodic errors are inherent in almost all worm gears due to slight eccentricities and misalignments[...]

  • Page 19

    19 The SkyView Pro GoT o system will emit a “beep” sound and displa y “Record completed” when the training time is up . Press any b utton to exit from the PEC T raining upon completion. Play Bac k the PEC Record PEC tracking can be activ ated under the Setup menu or by pressing the Setup quick ref erence b utton when needed. In the Setup me[...]

  • Page 20

    20 Orion T elescopes & Binoculars 89 Hangar W ay , Watsonville, CA 95076 Customer Support Help Line (800)‑676‑1343 • Day or Evening One-Y ear Limited W arranty This Orion SkyVie w Pro GoT o system is w arranted against defects in materials or wor kmanship f or a period of one year from the date of purchase. This warranty is f or the benef[...]