Orion SKYQUEST XTG User Manual

INSTRUCTION MANUALIN 388 Rev. B 11/10Customer Support (800) 676-1343 • E-mail: [email protected] Offices (831) 763-7000 • 89 Hangar Way,

10The GoTo 3. Hand ControllerThe SkyQuest XTg features the SynScan AZ hand controller, which provides two different modes of operation:AutoTracking Mo

11scope. The left and right directional buttons can also be used to move the text cursor when entering data on the hand con-troller.Scroll Buttons The

12must convert into degrees and arcminutes. To do this simply multiply the decimal value by 60. If your viewing location is at latitude 36.95 N

13you choose will only affect your alignment star selection; you will still be able to choose stars to view across the entire sky once the alignment i

14NOTE: When the power is on, you may choose to adjust the telescope electronically by using the hand control or manually by pushing the tube with you

15object could be a bright named star, a planet, or an object from the Messier, NGC, or IC catalogs, but not a star from the SAO catalog.Find the refe

16applications that need to communicate with the motor control board directly.Setup FunctionsThe Setup functions allow you to change any system variab

17is pointed. You may press the scroll buttons to switch between the different coordinate options. Set Slew Limits: Allows you to set slewing limits o

18Using the User Defined DatabaseThe GoTo system allows you to save up to 25 objects in the User Defined Database. You can save currently unknow

19The hand controller will display a list containing the clos-2. est known object in different catalogs and its distance to the exact location where t

2Figure 1. Overview of SkyQuest XTg Dobsonian (12" shown)Navigation knobAltitude motor housing12.5mm Illuminated Plössl 1.25" eyepieceEyepie

20When the download is complete, the Firmware Loader 6. will display “Update Complete”.The firmware in the computerized GoTo hand controller has now b

21mirror and the tilt of the primary mirror are the two collimation adjustments that will be done most often.If the entire primary mirror reflection i

22Viewing with EyeglassesIf you wear eyeglasses, you may be able to keep them on while you observe, if your eyepieces have enough eye relief to allow

23Astronomical Observing10. The SkyQuest XTg GoTo Dobsonian provides prodigious capability for observing the many wonders of the heavens, from t

24you’ve centered the object in the eyepiece, you can switch to higher magnification (shorter focal length eyepiece), if you wish. This is especially

25that you find an observing site well away from light pollution. Take plenty of time to let your eyes adjust to the darkness. As you become more expe

26SkyQuest XT8gPrimary mirror: 203mm diameter, parabolic, center-markedFocal length: 1200mmFocal ratio: f/5.9Focuser: Dual-speed Crayford (11:1), acce

27SkyQuest XT12gPrimary mirror: 305mm diameter, parabolic, center-markedFocal length: 1500mmFocal ratio: f/4.9Focuser: Dual-speed Crayford (11:1), acc

28Menu Tree

29Appendix A: Time Zones of the World

3Congratulations on your purchase of an Orion SkyQuest XTg GoTo Dobsonian. It is an observer’s dream telescope, offering quality diffraction-lim

30Appendix B: RS-232 ConnectionThe SkyQuest XTg Mount is designed to receive commands sent from a computer’s RS-232 COM port (via the computer interfa

31Star Charts

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One-Year Limited WarrantyThe Orion XTg GoTo Dobsonians are warranted against defects in materials or workmanship for a period of one year from the dat

4Box #2: Dobsonian Base(Refer to Figures 3 and 4)Qty. Description1 Left side panel (with altitude motor pre-installed)1 Right side panel1 Front

5Assembly2. Now that you have unpacked the boxes and familiarized yourself with all the parts in front of you, it is time to begin assembly.A

6Carefully position the assembled structure onto the top 3. baseplate by aligning the holes in the cutouts of the front and side panels to the corresp

7ing the six Phillips-head screws that connect the end ring to the tube (Figure 12), and then pulling the end ring off the tube.Warning: Once the r

8Connecting the Optical Tube to the Dobsonian BaseThe telescope is now assembled and ready to be placed into the Dobsonian base. The left altitude hub

9the dot, which is purposefully quite dim. The intensity of the dot is adjusted by turning the power knob. For best results when stargazing, use the d