Orion SkyQuest 10134 XT8g, Instruction Manual

Page 1: ...D 06 13 Orion SkyQuest XTg GoTo Dobsonians 10134 XT8g 10135 XT10g 10136 XT12g Customer Support www OrionTelescopes com contactus Corporate Offices 89 Hangar Way Watsonville CA 95076 USA Providing Exce...

Page 2: ...motor housing 12 5mm Illuminated Pl ssl 1 25 eyepiece Eyepiece rack Dobsonian base Polyethylene foam dust guard EZ Finder II 28mm DeepView 2 eyepiece 2 Dual speed Crayford focuser Optical tube Handle...

Page 3: ...to another location or returned to Orion for warranty repair having the proper packaging will help ensure that your telescope will sur vive the journey intact Before beginning assembly unpack each bo...

Page 4: ...del only Qty Description 1 Primary mirror 1 Mirror cell 3 Collimation knobs 3 Nylon washers 3 4 outer diameter 3 Springs Figure 3 SkyQuest XTg base components The XT12g base also includes two side bra...

Page 5: ...baseplate Figure 6 Insert the screws through the feet and thread them into the predrilled starter holes Figure 7 with the supplied Phillips screwdriver until tight 2 Connect the side panels to the fr...

Page 6: ...the altitude motor Locate the two small pilot holes and attach the holster using the small screws until just tight Do not over tighten these screws 7 Now install the azimuth motor connection cable It...

Page 7: ...e the large diameter and thin alumi num of the tube will cause the tube to become somewhat out of round once the end ring is removed To assemble the rear end ring with mirror and mirror cell now con n...

Page 8: ...into the dovetail base preinstalled on your SkyQuest optical tube The EZ Finder II arrives pre installed in the mounting bracket Just simply slide the dovetail mount ing bracket into the telescope s...

Page 9: ...object is centered in the eyepiece and on the EZ Finder s red dot the EZ Finder II is properly aligned with the telescope Once aligned the EZ Finder II will usually hold its alignment even after being...

Page 10: ...as depicted in Figure 22a If anything is off center as in Figure 22b proceed with the following col limation procedure The Collimation Cap and Mirror Center Mark Your XTg comes with a collimation cap...

Page 11: ...ry mirror is as centered in the secondary mirror as possible It may not be perfectly centered but that is OK for now Tighten the three small alignment setscrews equally to secure the secondary mirror...

Page 12: ...bottom of the mirror cell A simple star test will tell you whether the optics are accu rately collimated Star Testing the Telescope When it is dark point the telescope at a bright star high in the sky...

Page 13: ...ntroller s directional buttons until it is pointed in the general direction of the object you want to see Some observers find it convenient to sight along the tube to do this Now look in the EZ Finder...

Page 14: ...egrades images For observing faint deep sky objects choose a moon less night Using the optional light shroud will be a necessity see below Also use of a light pollution filter like the Orion SkyGlow B...

Page 15: ...a tion If the object looks worse then back off the magnification a little by using a lower power eyepiece Astronomical Objects Now that you are all setup and ready to go one critical deci sion must be...

Page 16: ...re not sensi tive to color in faint light Still there is something very special about seeing an astronomical object in real time with your own eyes live if not in living color Note About Astro imaging...

Page 17: ...tars 8 planets moon 212 named stars 55 well known double stars 20 well known variable stars 25 user defined objects SkyQuest XT12g Primary mirror 305mm diameter parabolic center marked Focal length 15...

Page 18: ...y valid in the country of purchase This warranty does not apply if in Orion s judgment the instrument has been abused mishandled or modified nor does it apply to normal wear and tear This warranty giv...