Orion SKYQUEST XT12 Manual do Utilizador

IN 227 Rev. D 05/09INSTRUCTION MANUALOrion SkyQuest™ XT12 IntelliScope®#27189 Customer Support (800)-676-1343E-mail: [email protected] Of

103. Aligning (Collimating) the Optical SystemTo get the sharpest images, your telescope’s optical sys-tem must be in precise alignment. The process

thing come loose when you are making adjustments. Place a sheet of white paper inside the optical tube directly oppo-site the focuser. This will provi

12The tilt of the primary mirror is adjusted with the three large spring-loaded collimation knobs on the back end of the opti-cal tube (bottom of the

134. Using Your TelescopeOne of the great benefits of the SkyQuest XT IntelliScope Dobsonian is its ability to point to more than 14,000 celes-tial o

14If you have trouble focusing, rotate the focusing knob so the drawtube is in as far as it will go. Now look through the eyepiece while slowly rotati

15in 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 finde

common sense prevails. It is especially important that the optical tube does not get knocked around; this can cause the optics to become misaligne

17with a red LED light is ideal, or you can cover the front of a regular incandescent flashlight with red cellophane or paper. Dim light is preferable

18tinct dark patches, and you may be able to spot a whitish polar ice cap. To see surface detail on Mars, you will need a high power eyepiece and ve

19location, the numbers get progressively smaller. When the navigation numbers reach 0, the telescope will be pointed right at the object! You just lo

2Figure 1. The SkyQuest XT12 IntelliScopeSecondary mirror holder with 4-vane spider (not visible)Finder scopeFinder scope bracketEyepieceFocuserOptica

208. SpecificationsPrimary mirror: 305mm diameter, Pyrex, parabolic, center- markedFocal length: 1500mmFocal ratio: f/4.9Focuser: Crayford, accepts 2&

3Congratulations on your purchase of an Orion SkyQuest XT12 IntelliScope Dobsonian. It is a high-performance astronomical instrument designed to provi

41 Hex key (size 4mm)3 Plastic feet3 Feet attachment wood screws (length 1")5 Encoder board mounting wood screws1 Brass bushing1

5Assembling the SkyQuest XT12 IntelliScope mirror cell to the tube can be a bit tricky. This is because the large diameter and thin aluminum of the tu

1. With a Phillips screwdriver, screw the plastic feet into the underside of the ground baseplate (A) using the self-tap-ping wood screws provided. I

7There are some predrilled holes on the right side panel (oppo-site the panel that holds the encoder connector board). These holes will be used to mou

8Placing the Optical Tube on the Dobsonian BaseLift the optical tube and gently place it into the Dobsonian base so that the altitude bearings on eith

9now be known as the retaining knob. Push the shaft of the retaining knob through the hole in the side panel opposite the one the retaining knob is in