Instruction/ maintenance manual of the product 10135XT12g Orion
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INSTRUCTION MANUAL IN 388 Rev . C 06/12 Customer Support (800 ) 676 -1 343 • E-mail: support@telescope.com Corporate Offices (831) 763-7000 • 89 Hangar W ay , Watsonville, CA 95076 © 2010-2012 Or.
2 Figure 1. Ov er view of SkyQuest XTg Dobsonian (12" shown) Navigation knob Altitude motor housing 12.5mm Illuminated Plössl 1.25" ey epiece Eyepiece rac k Dobsonian base P olyeth ylene fo.
3 Congratulations on y our purchase of an Orion SkyQuest XTg GoT o Dobsonian. It is an obser ver’ s dream telescope, off ering quality diffraction-limited optics; a stylish, easy-to-setup base outfitted with automated, computerized Go T o technology; and a sturdy design.
4 Box #2: Dobsonian Base (Refer to Figures 3 and 4) Qty . Description 1 Left side panel (with altitude motor pre-installed) 1 Right side panel 1 F ront panel 2 Side braces (XT12g only , not shown) 1 B.
5 2. Assembly Now that y ou have unpac ked the bo xes and f amiliarized yourself with all the parts in front of you, it is time to begin assembly . Assembly of the Dobsonian Base The base need only be assembled once, unless y ou disas - semble it f or long-term storage.
6 3 . Carefully position the assembled structure onto the top baseplate by aligning the holes in the cutouts of the front and side panels to the corresponding threaded metal col- lar inser ts on the top baseplate (Figure 10). Inser t the base assembly machine scre ws and tighten (Figure 11).
7 ing the six Phillips-head screws that connect the end ring to the tube (Figure 12), and then pulling the end ring off the tube. W arning: Once the rear end ring is remo ved from the tube, the raw edge of the tube itself will be exposed. Be careful not to cut or otherwise hurt yourself on the tubeís edge.
8 Connecting the Optical T ube to the Dobsonian Base The telescope is now assemb led and ready to be placed into the Dobsonian base. The left altitude hub on the optical tube has a dov etail slot that slides into the altitude axis tr unnion on the inside of the left side panel (Figure 17).
9 the dot, which is pur posefully quite dim. The intensity of the dot is adjusted by turning the power knob . F or best results when stargazing, use the dimmest possible setting that allo ws you to see the dot without difficulty .
10 3. The GoT o Hand Controller The SkyQuest XTg f eatures the SynScan AZ hand controller, which provides two diff erent modes of operation: AutoT racking Mode The SkyQuest XTg base incor porates a quad-encoder design that records the position of the telescope relative to the sky .
11 scope. The left and right directional b uttons can also be used to mov e the text cursor when entering data on the hand con- troller . Scroll Buttons The up and down scroll b uttons allow you to mo ve up and down within the menu tree or selections displa yed on the hand controller LCD .
12 must con vert into degrees and arcminutes. T o do this simply m ultiply the decimal value b y 60. If y our viewing location is at latitude 36.95 N y ou would enter a latitude of 36°57’ N [.
13 you choose will only aff ect your alignment star selection; you will still be ab le to choose stars to view across the entire sky once the alignment is complete. 3 . After you ha ve selected the region of the sky contain - ing the brightest star , the hand controller will generate a list of the brightest stars (magnitude 1.
14 NO TE: When the power is on, y ou may choose to adjust the telescope electronicall y by using the hand control or manually b y pushing the tube with yo ur hand. The tele - scope will calculate the coordinates accor dingly and dis- play the inf ormation correctly on the hand controller .
15 object could be a bright named star , a planet, or an object from the Messier , NGC, or IC catalogs , but not a star from the SA O catalog. 2 . Find the ref erence object in the hand controller database and command the telescope to “GoT o” the object.
16 applications that need to communicate with the motor control board directly . Setup Functions The Setup functions allow y ou to change any system variable or inf or mation regarding location, time, date, and alignment configurations.
17 is pointed. Y ou may press the scroll buttons to s witch between the diff erent coordinate options. Set Slew Limits: Allows y ou to set slewing limits of the GoT o base’ s altitude axis, to pre vent the optical tube from colliding with the base.
18 Using the User Defined Database The GoT o system allows you to sa ve up to 25 objects in the User Defined Database. Y ou can sav e currently unknown objects, unidentifiab le objects, current comet and/or aster - oid positions, or y ou can make a custom list of your f av orite objects to view f or quick access .
19 2 . The hand controller will displa y a list containing the clos- est known object in diff erent catalogs and its distance to the e xact location where the telescope is pointed. Use the scroll buttons to vie w these objects. 3 . Press ESC to e xit this function.
20 6 . When the download is complete , the Fir mware Loader will displa y “Update Complete”. The firmware in the computerized GoT o hand controller has now been updated.
21 mirror and the tilt of the primar y mirror are the two collimation adjustments that will be done most often. If the entire primar y mirror reflection is not visible in the sec - ondar y mirror , as in Figure 25c, you will need to adjust the tilt of the secondar y mirror .
22 Viewing with Eyeglasses If you w ear eyeglasses , you ma y be able to keep them on while you observe , if your ey epieces hav e enough eye relief to allo w you to see the whole field of vie w .
23 10. Astronomical Obser ving The SkyQuest XTg GoT o Dobsonian provides prodigious capability f or obser ving the many wonders of the heav ens, from the major planets to deep-space nebulas and galaxies . In this section we giv e you some astronomical obser ving tips and briefly summar ize what y ou can expect to see .
24 you’v e centered the object in the ey epiece, you can s witch to higher magnification (shor ter focal length e yepiece), if you wish. This is especially recommended f or small and br ight objects like planets and doub le stars. The Moon also takes higher magnifications well.
25 that you find an observing site well awa y from light pollution. T ake plenty of time to let your e yes adjust to the darkness. As you become more e xperienced and your obser ving skills get shar per , you will be ab le to ferret out more and more subtle details and structure from these fascinating objects .
26 SkyQuest XT8g Primar y mirror : 203mm diameter , parabolic, center-marked Focal length: 1200mm Focal r atio: f/5.9 Focuser: Dual-speed Crayf ord (11:1), accepts 2" and 1.
27 SkyQuest XT12g Primar y mirror : 305mm diameter , parabolic, center-marked Focal length: 1500mm Focal r atio: f/4.9 Focuser: Dual-speed Crayf ord (11:1), accepts 2" and 1.
28 Menu T ree.
29 Appendix A: Time Zones of the W orld.
30 Appendix B: RS-232 Connection The SkyQuest XTg Mount is designed to receive commands sent from a computer’ s RS-232 COM por t (via the computer interf ace cable). The hand controller will communicate with the computer at 9600 bits/sec, no parity , no stop bit.
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One-Y ear Limited W arranty The Orion XTg GoT o Dobsonians are warranted against def ects in materials or wor kmanship f or a per iod of one year from the date of purchase .
An important point after buying a device Orion 10135XT12g (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Orion 10135XT12g yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Orion 10135XT12g - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Orion 10135XT12g you will learn all the available features of the product, as well as information on its operation. The information that you get Orion 10135XT12g will certainly help you make a decision on the purchase.
If you already are a holder of Orion 10135XT12g, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Orion 10135XT12g.
However, one of the most important roles played by the user manual is to help in solving problems with Orion 10135XT12g. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Orion 10135XT12g along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
