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objects like planets and double stars. The Moon also takes 
higher magnifications well.
Deep sky objects, however, typically look better at medium 
or  low  magnifications. This  is  because  many  of  them  are 
quite faint, yet have some extent (apparent width). Deep sky 
objects will often disappear at higher magnifications, since 
greater magnification inherently yields dimmer images. This 
is not the case for all deep sky objects, however. Many galax-
ies are quite small, yet are somewhat bright, so higher power 
may show more detail.
The best rule of thumb with eyepiece selection is to start with 
a low power, wide field, and then work your way up in magnifi-
cation. If the object looks better, try an even higher magnifica-
tion. If the object looks worse, then back off the magnification 
a little by using a longer focal length eyepiece.

astronomical Objects

Now that your telescope is set up and ready to go, one critical 
decision must be made: what to look at?

A. The Moon

With is rocky and cratered surface, the Moon is one of the 
most interesting and easy subjects to view with your tele-
scope. The best time to view it is during its partial phases 
when shadows fall on the craters and canyon walls to give 
them definition. While the full moon may look like a tempting 
target, it is not optimal for viewing. The light is too bright and 
surface definition is low.
Even at partial phases the Moon is very bright. Use of an 
optional Moon filter helps to dim the glare. It simply threads 
onto the bottom of the eyepiece. You’ll find the Moon filter 
improves viewing comfort, and helps bring out the subtle fea-
tures on the lunar surface.

B. The Sun

You can change your nighttime telescope into a daytime Sun 
viewer by installing an optional solar filter over the front open-
ing of the telescope. The primary attraction is sunspots, which 
change shape, appearance, and location daily. Sunspots are 
directly related to magnetic activity in the Sun. Many observ-
ers like to make drawings of sunspots to monitor how the Sun 
is changing from day to day.

Important Note: Do not look at the Sun with any optical 
instrument without a professionally made solar filter, or 
permanent eye damage could result. Also, be sure to cov-
er the finder scope, or better yet, remove it altogether.

C. The Planets

The planets don’t stay put like the stars, so to find them you 
should refer to Sky Calendar at our website OrionTelescopes.
com, or use the IntelliScope Object Locator. Venus, Mars, 
Jupiter, and Saturn are the brightest objects in the sky after 
the Sun and the Moon. Your XX14i is capable of showing you 
these planets in some detail. Other planets may be visible but 
will likely appear star-like. Because planets are quite small in 
apparent size, optional higher power eyepieces are recom-
mended and often required for detailed observations. Not all 
the planets are usually visible at any one time.

Jupiter:  The  largest  planet,  Jupiter,  is  a  great  subject  for 
observation. You  can  see  the  disk  of  the  giant  planet  and 
watch the ever-changing positions of its four largest moons: 
Io, Callisto, Europa, and Ganymede. Higher power eyepieces 
should bring out the cloud bands on the planet’s disk.
Saturn: The ringed planet is a breathtaking sight. The tilt angle 
of the rings varies over a period of many years; sometimes 
they are seen edge-on, while at other times they are broad-
side and look like giant “ears” on each side of Saturn’s disk. 
A steady atmosphere (good seeing conditions) is necessary 
for a good view. Look closely and you may see the Cassini 
division, a thin, dark gap in the rings. You should also see one 
or more of Saturn’s moons, which look like faint nearby stars. 
The brightest is the moon Titan.
Venus: At its brightest, Venus is the most luminous object in 
the sky, excluding the Sun and the Moon. It is so bright that 
sometimes it is visible to the naked eye during full daylight! 
Ironically, Venus appears as a thin crescent, not a full disk, 
when at its peak brightness. Because it is so close to the Sun, 
it never wanders too far from the morning or evening horizon. 
No surface markings can be seen on Venus, which is always 
shrouded in dense clouds.
Mars: The Red Planet makes a close approach to Earth every 
two years. Observing Mars is most favorable at these times. 
You should see a salmon-colored disk with some distinct 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 very steady air!

D. The Stars

Stars will appear as tiny points of light. Even powerful tele-
scopes cannot magnify stars to appear as anything more than 
pinpoints. You can, however, enjoy the different colors of the 
stars and locate many pretty double and multiple stars. The 
famous “Double-Double” in the constellation Lyra and the gor-
geous two-color double star Albireo in Cygnus are favorites. 
Defocusing a star slightly can help bring out its color.

E. Deep-Sky Objects

Under dark skies, you can observe a wealth of fascinating 
deep-sky objects; that is, objects that reside outside of our 
solar system. These include gaseous nebulas, open and glob-
ular star clusters, and a variety of different types of galaxies.
The large aperture of the XX14i is particularly well suited 
to gathering light, which is critical for observing these faint 
celestial entities. For deep-sky observing, it is important that 
you find an observing site well away from light pollution. Take 
plenty of time to let your eyes adapt to the darkness. As you 
become  more  experienced  and  your  observing  skills  get 
sharper, you will be able to ferret out more and more subtle 
details and structure from these fascinating objects.
Beginners are often surprised to discover that the deep sky 
objects they see in the eyepiece of a telescope are mostly 
grayish, not colorful like those you see in long-exposure astro-
images. The reason is that our eyes are not sensitive to color 
in faint light. Still, there is something very special about see-
ing an astronomical object in real time with your own eyes – 
“live,” if not in living color.

Summary of Contents for 9791

Page 1: ...er Support 800 676 1343 E mail support telescope com Corporate Offices 831 763 7000 89 Hangar Way Watsonville CA 95076 Orion SkyQuest XX14i IntelliScope Truss Tube Dobsonian 9791 Providing Exceptional...

Page 2: ...2 Figure 1 The SkyQuest XX14i IntelliScope Truss Tube Dobsonian...

Page 3: ...t use of the telescope 1 Unpacking The telescope is packed in four shipping boxes as detailed below We recommend keeping the original packaging In the event that the telescope needs to be shipped to a...

Page 4: ...yepiece IntelliScope Object Locator Kit Software 9x50 Finder scope Finder scope bracket with O ring Collimation cap Hex keys x3 Washers Cooling fan mounting screws Upper tube section Lower tube sectio...

Page 5: ...r disk 1 Controller cable coil cable 1 Azimuth encoder cable shorter 1 Altitude encoder cable longer 1 Azimuth encoder spacer washer thin 1 4 outer dia 0 015 thick 4 Encoder connector board washers 3...

Page 6: ...10mm long 15mm dia 1 Insertion tube for rubber washers 3 long 3 Counterweight attachment bolts hex head 1 long black 1 Brass azimuth bushing 1 Azimuth axis bolt hex head 2 75 long 2 Fender washers 1 o...

Page 7: ...ical stop knob Fender washers x2 Altitude tensioning metal washer Vertical stop washers 2 thin 2 thick Altitude tensioning Teflon washer Hex lock nut Counterweight mounting bolts x3 Azimuth axis bolt...

Page 8: ...is hefty 14 Dob has the portability and manageability of a smaller telescope Refer to Figure 7 during base assembly When tightening screws tighten them until firm but be careful not to strip the holes...

Page 9: ...9 N R R M B C D L N O H P J E F A H I Q Q G x12 S x12 T x12 Figure 7 Exploded view of the XX14i base...

Page 10: ...liScope Object Locator kit Insert the modular jack on the azimuth encoder board E 8 into the rectangular cutout in the top baseplate D and align the encoder board so the screw lines up with the pre dr...

Page 11: ...les in each side panel The beveled end of the cylinder should be facing away from the side panel Push a bearing cyl inder screw through the side panel and thread it into the built in nut in the cylind...

Page 12: ...able should plug into the jack on the left side of the encoder connector board Figure 14 Connect one end of the altitude encoder cable the longer 20 of the two flat cables in the IntelliScope kit to t...

Page 13: ...d ing or removing one or more of the supplied thick and or thin washers Adjusting the vertical stop is required when using the IntelliScope Object Locator since the optical tube must point precisely v...

Page 14: ...least three full turns of engage ment on the shafts The mirror cell is now almost ready to be installed onto the lower tube section Before doing so check to make sure that the three mir 4 ror retaini...

Page 15: ...tion instructions For the three counterweights thread them onto the counterweight mounting bolts as far as they will go and tighten them lightly against the metal plate Figure 22 Now the upper and low...

Page 16: ...the knobs and holes line up Figure 26 When tightened the knob will clamp the truss connector against the regis tration flats on the upper truss support ring Figure 27 Repeat this for the other three...

Page 17: ...pres sure Note that the tube will not yet be properly balanced since the eyepiece and finder scope are not in place and the altitude tensioning knob has not been installed Select one of the altitude t...

Page 18: ...et and place it over the body of the finder scope until it seats into the groove in the middle of the finder Unthread the black nylon alignment screws on the bracket until the screw ends are flush wit...

Page 19: ...usly Figure 33 The other eyepiece and 1 25 adapter can be placed in the eyepiece rack until they are needed To install the 10mm Sirius Pl ssl eyepiece 1 25 instead 4 of the 2 DeepView eyepiece keep th...

Page 20: ...4i has a small adhesive ring marking its center This center mark allows you to achieve a very precise collimation you don t have to guess where the exact center of the mirror is NOTE The center ring s...

Page 21: ...head screwdriver with your other hand Figure 38 Turning the screw clockwise will move the secondary mirror toward the front opening of the optical tube while turning the screw counter clockwise will...

Page 22: ...the collimation cap is off center The tilt of the primary mirror is adjusted with three spring loaded collimation knobs on the back end of the optical tube bottom of the primary mirror cell these are...

Page 23: ...e the base to tip because of the reduced leverage In this case it is helpful to place your other hand on the base or the optical tube to help guide the tube Setting the Altitude Tension A nice feature...

Page 24: ...he weight of the eyepiece you can adjust it by tightening or loosening the drawtube ten sioning set screw on the focuser which is located just below the focus lock thumb screw Figure 33 Adjust this se...

Page 25: ...e finder scope If your general aim is accu rate the object should appear somewhere in the field of view Make small adjustments to the telescope s position until the object is centered on the finder s...

Page 26: ...lower tube section Place the dust covers on the tops of the upper and lower tube sections The telescope is now disassembled and ready to be transported Note In step 5 of Assembly of the Optical Tube...

Page 27: ...onomical Observing The SkyQuest XX14i IntelliScope Truss Tube Dobsonian pro vides prodigious capability for observing the many wonders of the heavens from the major planets to deep space nebulas and g...

Page 28: ...Moon are bright enough to see clearly even from light polluted city skies for nebulas galaxies and most star clusters the less ambient light there is to reduce contrast the better When it isn t possi...

Page 29: ...an off by unplugging the battery pack Let Your Eyes Dark Adapt Do not expect to go from a lighted house into the darkness of the outdoors at night and immediately see faint nebulas galaxies and star c...

Page 30: ...subject for observation You can see the disk of the giant planet and watch the ever changing positions of its four largest moons Io Callisto Europa and Ganymede Higher power eyepieces should bring out...

Page 31: ...rcular motion then remove any excess fluid with a fresh lens tissue Oily fingerprints and smudges may be removed using this method Use caution rubbing too hard may scratch the lens For larger lenses c...

Page 32: ...across the mirror Then rinse the mir ror under a stream of lukewarm water Any particles on the surface can be swabbed gently with a series of cotton balls each used just one time Dry the mirror in a...

Page 33: ...ower tube section 52 9 lbs Upper tube section 9 4 lbs Truss pole assemblies 6 9 lbs OTA length assembled 61 OTA length disassembled Lower tube section 21 75 long Upper tube section 8 1 long Truss pole...

Page 34: ...turned postage paid to Orion Warranty Repair 89 Hangar Way Watsonville CA 95076 Proof of purchase such as a copy of the original receipt is required This warranty does not apply if in Orion s judgment...

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