Orion SKYVIEW PRO 9829 User Manual

INSTRUCTION MANUAL  
®
Orion  
SkyView Pro EQ Mount  
#9829  
Customer Support (800) 676-1343  
Corporate Offices (831) 763-7000  
P.O. Box 1815, Santa Cruz, CA 95061  
Providing Exceptional Consumer Optical Products Since 1975  
IN 195 Rev. A 10/02  
Congratulations on your purchase of a quality Orion mount. Your new SkyView Pro Equatorial Mount  
was developed to work with many different telescope optical tubes. Designed for astronomical use, this  
precision mount allows convenient “tracking” of celestial objects as they move slowly across the sky, so  
they remain within your eyepiece’s field of view. The setting circles built into the mount will assist you in  
locating hundreds of fascinating celestial denizens, including galaxies, nebulas, and star clusters, from  
their catalogued coordinates. With a little practice, you’ll find that the SkyView Pro Equatorial Mount is an  
invaluable tool for getting the most out of your astronomical observing sessions.  
These instructions will help you set up and properly use your equatorial mount. Please read them over  
thoroughly before getting started.  
Table of Contents  
1. Unpacking . . . . . . . . . . . . . . . . . . . . . . . 3  
2. Parts List . . . . . . . . . . . . . . . . . . . . . . . . 3  
3. Assembly . . . . . . . . . . . . . . . . . . . . . . . . 3  
4. Attaching a telescope . . . . . . . . . . . . . . . 4  
Azimuth  
adjustment knobs  
5. Balancing the telescope . . . . . . . . . . . . .4  
6. Setting up and using  
Post  
the equatorial mount . . . . . . . . . . . . . . . 5  
7. Specifications . . . . . . . . . . . . . . . . . . . . . 9  
1. Unpacking  
Figure 2. Orient the equatorial mount so that the post on the  
tripod head lines up with the azimuth adjustment knobs on the  
equatorial mount.  
The entire mount will arrive in one box. Be careful unpacking  
the box.We recommend keeping the box and original packag-  
ing. In the event that the mount needs to be shipped to anoth-  
er location, or returned to Orion for warranty repair, having the  
proper packaging will help ensure that your mount will survive  
the journey intact.  
3. Assembly  
1. Stand the tripod upright and spread the legs out as far as  
they will go. Keep the tripod legs at their shortest (fully  
retracted) length, for now; you can extend them to a more  
desirable length later, after the scope is fully assembled.  
Make sure all the parts in the Parts List are present. Be sure to  
check box carefully, as some parts are small. If anything appears  
to be missing or broken, immediately call Orion Customer  
Support (800-676-1343) or email [email protected] for  
assistance.  
2. Place the base of the equatorial mount onto the tripod  
head. Orient the equatorial mount so that the post on the  
tripod head lines up with the azimuth adjustment knobs on  
the equatorial mount (Figure 2). You may need to loosen  
the azimuth adjustment knobs on the equatorial mount in  
order to fit the mount onto the tripod head.  
2. Parts List  
1
1
1
1
1
1
1
1
2
1
Tripod  
Tripod support tray  
3. Thread the central support shaft into the equatorial mount  
until tight. This will secure the equatorial mount to the tri-  
pod head.  
Equatorial mount  
Latitude adjustment L-bolt  
Tube ring mounting plate  
Counterweight shaft  
Large counterweight  
Small counterweight  
Slow-motion control knobs  
Polar axis finder scope cover  
4. Thread the latitude adjustment L-bolt into the rear of the  
equatorial mount as show in Figure 1  
5. Remove the knob and washer from the bottom of the cen-  
ter support shaft. Slide the tripod support tray up the bot-  
tom of the central support shaft until the three tray arms  
are touching the legs of the tripod. The flat side of the  
accessory tray should be facing up. Make sure the “V” of  
each tray arm is against a tripod leg. Place the knob wash-  
3
er on the center support shaft against the tray, and follow  
it by threading the securing knob all the way up the center  
support shaft until it is tight against the tray. The tripod  
support tray provides additional stability for the tripod, and  
holds up to five 1.25" eyepieces and two 2" eyepieces.  
6. Thread the counterweight shaft into the equatorial mount  
at the base of the declination axis until tight. Make sure the  
casting at the top is threaded clockwise as far as it will go  
before attaching the shaft. Then turn the casting counter-  
clockwise one the shaft is installed until the top of the cast-  
ing is flush with the mount.  
a.  
c.  
b.  
7. Remove the knurled “toe saver” retaining screw on the  
bottom of the counterweight shaft and slide both counter-  
weights onto the shaft. Make sure the counterweight lock  
knobs are adequately loosened to allow the counterweight  
shaft to pass through the hole. Position the counterweights  
about halfway up the shaft and tighten the lock knobs.  
Replace the toe saver at the end of the bar. The toe saver  
prevents the counterweights from falling on your foot if the  
lock knobs happen to come loose.  
d.  
Figure 3. Proper operation of the equatorial mount requires that  
the telescope tube be balanced on both the R.A. and Dec. axes. (a)  
With the R.A. lock lever released, slide the counterweights along the  
counterweight shaft until it just counterbalances the tube. (b) When  
you let go with both hands, the tube should not drift up or down. (c)  
With the Dec. lock knob released, loosen the tube ring lock clamps  
a few turns ands slide the telescope forward or back in the tube  
rings. (d) When the tube is balanced about the Dec. axis, it will not  
move when you let go.  
8. Attach the slow-motion control knobs to the right ascen-  
sion and declination gear shafts of the equatorial mount  
by sliding them onto the shafts. Line up the flat end of the  
gear shaft with the interior of the knob. The knobs can be  
attached to either end of the shafts, whichever is more  
convenient for you.  
Your SkyView Pro EQ mount is now fully assembled and  
should resemble Figure 1.  
3. Open the tube rings and lay the telescope optical tube in  
the rings at about the midpoint of the tube’s length. Rotate  
the tube so that the focuser is at a convenient height for  
viewing. Close the tube rings and tighten them.  
4. Attaching a Telescope  
The SkyView Pro equatorial mount is designed to hold tele-  
scope tubes weighing up to approximately 20 lbs. For heavier  
telescopes, the mount may not provide sufficient stability for  
steady imaging. Any type of telescope can be mounted on the  
SkyView Pro, including refractors, Newtonian reflectors, and  
catadiotropics, provided a set of tube rings is available to cou-  
ple the tube to the mount. Orion sells a variety of telescope  
tube rings. Please visit our website at telescope.com for  
details.  
5. Balancing a Telescope  
To ensure smooth movement of the telescope on both axes of  
the equatorial mount, it is imperative that the optical tube is  
properly balanced. We will first balance the telescope with  
respect to the right ascension axis, then the declination axis.  
1. Keeping one hand on the telescope optical tube, loosen  
the R.A. lock lever. Make sure the Dec. lock lever is locked,  
for now. The telescope should now be able to rotate freely  
about the right ascension axis. Rotate it until the counter-  
weight shaft is parallel to the ground (i.e., horizontal).  
1. Attach the tube mounting rings to the tube mounting plate  
using the attachment screws that came with tube rings.  
The screws should go through the holes on the outer ends  
of the mounting plate and rethread into the tube rings.  
Note that the side of the mounting plate with the central  
“groove” will be facing up.  
2. Now loosen both counterweight lock knobs and slide the  
weights along the shaft until they exactly counterbalance  
the telescope (Figure 3a). That’s the point at which the  
shaft remains horizontal even when you let go with both  
hands (Figure 3b). If the telescope refuses to balance,  
then you have either too much or too little counterweight.  
Remove a counterweight if it is too much, or add optional  
counterweights if it is too little.  
2. Loosen the black mounting plate securing knob as well as  
the metal safety screw on the top of the equatorial mount.  
Place the mounting plate, with the tube rings attached, in  
the dovetail slot on top of the equatorial mount. Position  
the mounting plate so that it is centered on the dovetail  
slot. Re-tighten the mounting plate securing knob until the  
mounting plate is secure. Then, tighten the safety screw.  
The safety screw will ensure that the mounting plate (and  
telescope tube) will not fall off the EQ mount if the mount-  
ing plate securing knob should come loose.  
3. Retighten the counterweight lock knobs. The telescope is  
now balanced on the right ascension axis.  
4
Dec. slow-motion  
control knob  
Dec. setting circle  
Front opening  
Dec. lock lever  
R.A. lock lever  
R.A.  
setting circle  
R.A. slow-motion  
control knob  
Polar axis  
finder scope  
(optional)  
Latitude scale  
Latitude  
adjustment  
L-bolts  
a.  
b.  
Figure 4. The SkyView Pro Equatorial Mount, shown from both sides.  
4. To balance the telescope on the declination axis, first tight-  
en the R.A. lock lever, with the counterweight shaft still in  
the horizontal position.  
Little Dipper  
(in Ursa Minor)  
5. With one hand on the telescope optical tube, loosen the  
Dec. lock lever.The telescope should now be able to rotate  
freely about the Dec. axis. Loosen the tube ring clamps a  
few turns, until you can slide the telescope tube forward  
and back inside the rings. (this can be aided by using a  
slight twisting motion on the optical tube while you push or  
pull on it). (Figure 3c).  
N.C.P.  
Big Dipper  
(in Ursa Major)  
Polaris  
ter  
oin  
P
Cassiopeia  
tars  
S
6. Position the telescope in the tube rings so it remains hori-  
zontal when you carefully let go with both hands. This is  
the balance point for the optical tube with respect to the  
Dec. axis (Figure 3d).  
Figure 5. To find Polaris in the night sky, look north and find the  
Big Dipper. Extend an imaginary line from the two "Pointer Stars" in  
the bowl of the Big Dipper. Go about five times the distance  
between those stars and you'll reach Polaris, which lies within 1° of  
the north celestial pole (NCP).  
7. Retighten the knurled ring clamps.  
The telescope is now balanced on both axes. When you  
loosen the lock lever on one or both axes and manually point  
the telescope, it should move without resistance and should  
not drift from where you point it.  
Polar Alignment  
For Northern Hemisphere observers, approximate polar align-  
ment is achieved by pointing the mount’s right ascension axis  
at the North Star, or Polaris. It lies within 1° of the north celes-  
tial pole (NCP), which is an extension of the Earth’s rotational  
axis out into space. Stars in the Northern Hemisphere appear  
to revolve around the NCP.  
6. Setting Up and Using the  
Equatorial Mount  
When you look at the night sky, you no doubt have noticed  
that the stars appear to move slowly from east to west over  
time. That apparent motion is caused by the Earth’s rotation  
(from west to east). An equatorial mount (Figure 4) is  
designed to compensate for that motion, allowing you to easi-  
ly “track” the movement of astronomical objects, thereby  
keeping them from drifting out of your telescope’s field of view  
while you’re observing.  
To find Polaris in the sky, look north and locate the pattern of  
the Big Dipper (Figure 5). The two stars at the end of the  
“bowl” of the Big Dipper point right to Polaris.  
Observers in the Southern Hemisphere aren’t so fortunate to  
have a bright star so near the south celestial pole (SCP). The  
star Sigma Octantis lies about 1° from the SCP, but it is bare-  
ly visible with the naked eye (magnitude 5.5).  
For general visual observation, an approximate polar align-  
ment is sufficient.  
This is accomplished by slowly rotating the telescope on its  
right ascension (R.A.) axis, using only the R.A. slow-motion  
knob. But first the R.A. axis of the mount must be aligned with  
the Earth’s rotational (polar) axis—a process called polar  
alignment.  
1. Level the equatorial mount by adjusting the length of the  
three tripod legs.  
5
Eyepiece Alignment  
focus ring set screws (3)  
Objective  
lens  
Azimuth  
adjustment  
knobs  
Focus  
lock ring  
Figure 6. For polar alignment, position the tripod so that the "N"  
label at the base of the mount faces north. The azimuth fine  
Figure 7a. The optional polar axis finder scope.  
adjustment knobs above it are used to make small adjustments to the  
mount’s azimuth position. Be certain to loosen the tripod attachment  
knob on the central support shaft before adjusting these knobs.  
2. There are two latitude adjusting L-bolts (see Figure 4);  
loosen one while tightening the other. By doing this you  
will adjust the latitude of the mount. Continue adjusting the  
mount until the pointer on the latitude scale is set at the  
latitude of your observing site. If you don’t know your lati-  
tude, consult a geographical atlas to find it. For example, if  
your latitude is 35° North, set the pointer to 35. The lati-  
tude setting should not have to be adjusted again unless  
you move to a different viewing location some distance  
away.  
Figure 7b. Installing the optional polar axis finder scope.  
3. Loosen the Dec. lock lever and rotate the telescope’s opti-  
cal tube until it is parallel with the right ascension axis, as  
it is in Figure 4.  
thread the polar axis finder scope into the equatorial mount  
until tight.  
4. Move the tripod so the telescope tube and right ascension  
axis point roughly at Polaris. If you cannot see Polaris  
directly from your observing site, consult a compass and  
rotate the tripod so the telescope points north. There is a  
label bearing a large “N” at the base of the equatorial  
mount (Figure 6). It should be facing north.  
Alignment of the Polar Axis Finder Scope  
1. Loosen the Dec. lock lever and rotate the optical tube on  
the declination axis so that the tube is at a 90° to the right  
ascension axis (Figure 8). Tighten the Dec. lock lever.  
2. Look through the polar finder at a distant object (during  
the day) and center it in the crosshairs. You may need to  
adjust the latitude adjustment L-bolts and the tripod posi-  
tion to do this.  
The equatorial mount is now polar aligned for casual observ-  
ing. More precise polar alignment is recommended for  
astrophotography. For this we recommend using the optional  
polar axis finder scope  
3. Rotate the mount 180° about the R.A. axis. Again, it may  
be convenient to remove the counterweights and optical  
tube first.  
From this point on in your observing session, you should not  
make any further adjustments to the latitude of the mount, nor  
should you move the tripod. Doing so will undo the polar align-  
ment. The telescope should be moved only about its R.A. and  
Dec. axes.  
4. Look through the polar finder again. Is the object being  
viewed still centered on the crosshairs? If it is, then no fur-  
ther adjustment is necessary. If not, then look through the  
polar finder while rotating the mount about the R.A. axis.  
You will notice that the object you have previously cen-  
tered moves in a circular path. Use the three alignment  
setscrews on the polar axis finder to redirect the cross-  
hairs of the polar finder to the apparent center of this cir-  
cular path. Repeat this procedure until the position that the  
crosshairs point to does not rotate off-center when the  
mount is rotated in R.A. Once this is accomplished,  
retighten the thumbscrews.  
Polar Alignment Using an Optional Polar Axis  
Finder Scope  
The SkyView Pro EQ mount can be equipped with an option-  
al polar axis finder scope (Figure 7a) housed inside the right  
ascension axis of the mount. When properly aligned and  
used, it makes accurate polar alignment quick and easy to do.  
To install the polar axis finder scope, remove the cap at the  
base of the mount’s right ascension axis (Figure 7b) and  
6
indicate the general positions of Cassiopeia and the Big  
Dipper relative to the north celestial pole (which is indicat-  
ed by the cross at the center of the reticle). Rotate the ret-  
icle so the constellations depicted match their current ori-  
entation in they sky when viewed with the naked eye. To  
do this, release the R.A. lock lever and rotate the main tel-  
escope around the R.A. axis until the reticle is oriented  
with sky. For larger optical tubes, you may need to remove  
the tube from the mount to prevent it from bumping into  
the mount. Once the reticle is correctly oriented, use the  
right ascension lock lever to secure the mount’s position.  
5. Now use the azimuth adjustment knobs (Figure 2) and the  
latitude adjustment L-bolts (Figure 4) on the mount to  
position the star Polaris inside the tiny circle marked  
“Polaris” on the finder’s reticle. You must first loosen the  
knob underneath the equatorial mount on the center sup-  
port shaft to use the azimuth adjustment knobs. Once  
Polaris is properly positioned within the reticle, you are  
precisely polar aligned.  
If you do not have a clear view of Polaris from your observing  
site, you will not be able to use the polar-axis finder to pre-  
cisely polar align the telescope.  
Figure 8. The optical tube must be at a 90° angle to the right  
Note: From this point on in your observing session, you  
should not make any further adjustments in the azimuth  
or the latitude of the mount, nor should you move the tri-  
pod. Doing so will undo the polar alignment. The tele-  
scope should be moved only about its right ascension  
and declination axes.  
ascension axis in order to view through the polar axis finder  
The polar axis finder scope is now ready to be used. When  
not in use, replace the plastic protective cover to prevent the  
polar finder from getting bumped, which could knock it out of  
alignment.  
Use of the Right Ascension and Declination  
Slow-Motion Control Knobs  
Using the Polar Axis Finder Scope  
The right ascension (R.A.) and declination (Dec.) slow-motion  
control knobs allow fine adjustment of the telescope’s position  
to center objects within the field of view. Before you can use  
the knobs, you must manually “slew” the mount to point the  
telescope in the vicinity of the desired target. Do this by loos-  
ening the R.A. and Dec. lock levers and moving the telescope  
about the mount’s right ascension and declination axes. Once  
the telescope is pointed close to the object to be viewed,  
retighten both lock levers.  
The reticle of the polar axis finder scope for the SkyView Pro  
has a tiny star map printed on it that makes precise polar  
alignment quick and easy. To align the mount using the polar  
axis finder scope, follow these instructions:  
1. Approximately polar-align the mount as outlined in the  
previous procedure.  
2. Loosen the Dec. lock lever and rotate the optical tube on  
the declination axis so that the tube is at a 90° to the right  
ascension axis (Figure 8). Tighten the Dec. lock lever.  
Note: If you have an optional motor drive attached you  
will need to loosen the manual clutch on the R.A. (and  
Dec. for dual-axis drives) gear shaft before using the  
slow-motion control knob.  
3. Remove the cap on the front opening of the mount (Figure  
4). Focus the polar finder by rotating its eyepiece. Now,  
sight Polaris in the polar axis finder scope. If you have fol-  
lowed the approximate polar alignment procedure accu-  
rately, Polaris will probably be within the field of view. If  
not, move the tripod left-to-right, and adjust the latitude  
up-and down until Polaris is somewhere within the field of  
view of the polar axis finder scope.  
The object should now be visible somewhere in the tele-  
scope’s finder scope. If it isn’t, use the slow-motion knobs to  
scan the surrounding area of sky. When the object is visible in  
the finder scope, use the slow-motion knobs to center it. Now,  
look in the telescope’s eyepiece. If the finder scope is proper-  
ly aligned, the object should be visible somewhere in the field  
of view. Once the object is visible in the eyepiece, use the  
slow-motion knobs to center it in the field of view.  
4. Shine a red flashlight down the front end of the polar find-  
er to illuminate the reticle within the field of view. Make  
sure the flashlight shines in at an angle, so as not to block  
the polar finder’s field of view. It may be helpful to have a  
friend hold the flashlight while you look through the polar  
finder. Note the constellation Cassiopeia and the Big  
Dipper in the reticle. They do not appear in scale, but they  
Tracking Celestial Objects  
When you observe a celestial object through the telescope,  
you’ll see it drift slowly across the field of view. To keep it in  
7
That’s 5 hours and 35.4 minutes in right ascension, and -5  
degrees and 27 arc-minutes in declination (there are 60 arc-  
minutes in 1 degree of declination).  
Dec. setting  
circle  
Dec.  
indicator  
arrows  
Dec. setting  
circle  
thumbscrew  
(2)  
Before you can use the setting circles to locate objects, the  
mount must be accurately polar aligned, and the setting cir-  
cles must be calibrated.  
R.A. setting  
circle  
Calibrating the Declination Setting Circle  
R.A.  
setting circle  
thumbscrew  
(2)  
1. Loosen the Dec. lock lever and position the telescope as  
accurately as possible in declination so it is parallel to the  
R.A. axis, as shown in Figure 4. Re-tighten the lock lever.  
R.A.  
indicator  
arrow  
2. Loosen one of the thumbscrews on the Dec. setting circle,  
this will allow the setting circle to rotate freely. Rotate the  
Dec. setting circle until the pointer reads exactly 90°. Re-  
tighten the setting circle thumbscrew.  
Figure 9. The R.A. and Dec. setting circles.  
Calibrating the Right Ascension Setting Circle  
the field, if your equatorial mount is polar aligned, just turn the  
R.A. slow-motion control knob clockwise. The Dec. slow-  
motion control knob is not needed for tracking. Objects will  
appear to move faster at higher magnifications, because the  
field of view is narrower.  
1. Identify a bright star in the sky near the celestial equator  
(declination = 0°) and look up its coordinates in a star  
atlas.  
2. Loosen the R.A. and Dec. lock levers on the equatorial  
mount, so the telescope optical tube can move freely.  
Optional Motor Drives for Automatic Tracking  
3. Point the telescope at the bright star whose coordinates  
you know. Lock the R.A. and Dec. lock levers.  
An optional DC motor drive can be mounted on the R.A. axis  
of the equatorial mount to provide hands-free tracking.  
Objects will then remain stationary in the field of view without  
any manual adjustment of the right ascension slow-motion  
control knob.  
4. Loosen one of the R.A. setting circle thumbscrews (see  
Figure 9; this will allow the setting circle to rotate freely.  
Rotate the setting circle until the R.A. pointer arrow indi-  
cates the R.A. coordinate listed in the star atlas for the  
object. Re-tighten the setting circle thumbscrew.  
Understanding the Setting Circles  
The setting circles on an equatorial mount enable you to  
locate celestial objects by their “celestial coordinates”. Every  
object resides in a specific location on the “celestial sphere”.  
That location is denoted by two numbers: its right ascension  
(R.A.) and declination (Dec.). In the same way, every location  
on Earth can be described by its longitude and latitude. Right  
ascension is similar to longitude on Earth, and declination is  
similar to latitude. The R.A. and Dec. values for celestial  
objects can be found in any star atlas or star catalog.  
Finding Objects With the Setting Circles  
Now that both setting circles are calibrated, look up in a star  
atlas the coordinates of an object you wish to view.  
1. Loosen the Dec. lock lever and rotate the telescope until  
the declination value from the star atlas matches the read-  
ing on the Dec. setting circle. Remember that values of the  
Dec. setting circle are positive when the telescope is point-  
ing north of the celestial equator (Dec. = 0°), and negative  
when the telescope is pointing south of the celestial equa-  
tor. Retighten the lock lever.  
The R.A. setting circle is scaled in hours, from 1 through 24,  
with small marks in between representing 10-minute incre-  
ments (there are 60 minutes in 1 hour of right ascension).The  
lower set of numbers apply to viewing in the Northern  
Hemisphere, while the numbers above them apply to viewing  
in the Southern Hemisphere. The location of the right ascen-  
sion coordinate indicator arrow is shown in Figure 9.  
2. Loosen the R.A. lock lever and rotate the telescope until  
the right ascension value from the star atlas matches the  
reading on the R.A. setting circle. Remember to use the  
upper set of numbers on the R.A. setting circle. Retighten  
the lock lever.  
The Dec. setting circle is scaled in degrees, with each mark  
representing 2° increments. Values of declination coordinates  
range from +90° to -90°. The 0° mark indicates the celestial  
equator. When the telescope is pointed north of the celestial  
equator, values of the declination setting circle are positive;  
when the telescope is pointed south of the celestial equator,  
values of the declination setting circle are negative.  
Most setting circles are not accurate enough to put an object  
dead-center in the telescope’s eyepiece, but they should  
place the object somewhere within the field of view of the  
finder scope, assuming the equatorial mount is accurately  
polar aligned. Use the slow-motion controls to center the  
object in the finder scope, and it should appear in the tele-  
scope’s field of view.  
So, the coordinates for the Orion Nebula listed in a star atlas  
will look like this:  
The setting circles must be re-calibrated every time you wish  
to locate a new object. Do so by calibrating the setting circles  
for the centered object before moving on to the next one.  
R.A. 5h 35.4m Dec. –5° 27'  
8
Dec. lock lever and rotate the telescope until it is pointing  
straight overhead. The counterweight shaft is still horizontal.  
Then retighten both lock levers.  
What if you need to aim the telescope directly north, but at an  
object that is nearer to the horizon than Polaris? You can’t do  
it with the counterweights down as pictured in Figure 1. Again,  
you have to rotate the scope in right ascension so that the  
counterweight shaft is positioned horizontally. Then rotate the  
scope in declination so it points to where you want it near the  
horizon.  
a.  
b.  
To point the telescope directly south, the counterweight shaft  
should again be horizontal. Then you simply rotate the scope  
on the declination axis until it points in the south direction.  
To point the telescope to the east or west, or in other direc-  
tions, you rotate the telescope on its right ascension and dec-  
lination axes. Depending on the altitude of the object you want  
to observe, the counterweight shaft will be oriented some-  
where between vertical and horizontal.  
Figure 10 illustrates how the telescope will look when pointed  
at the four cardinal directions: north, south, east and west.  
c.  
d.  
The key things to remember when pointing the telescope are  
that a) you only move it in right ascension and declination, not  
in azimuth or latitude (altitude), and b) the counterweight and  
shaft will not always appear as it does in Figure 1. In fact it  
almost never will!  
Figure 10. This illustration show the telescope pointed in the the  
four cardinal directions (a) north, (b) south, (c) east, (d) west. Note  
that the tripod and mount have ot been moved; only the telescope  
tube has been moved on the R.A. and Dec. axes.  
Confused About Pointing the Telescope?  
7. Specifications  
Beginners occasionally experience some confusion about  
how to point the telescope overhead or in other directions. In  
Figure 1 the telescope is pointed north as it would be during  
polar alignment. The counterweight shaft is oriented down-  
ward. But it will not look like that when the telescope is point-  
ed in other directions. Let’s say you want to view an object  
that is directly overhead, at the zenith. How do you do it?  
Mount: German equatorial  
Tripod: Aluminum  
Weight: 29 lbs. 8 oz.  
Counterweight: Large, 7 lbs. 9 oz. ; Small 4 lbs.  
Slow-motion adjustment: R.A. and Dec. axes  
DO NOT make any adjustment to the latitude adjustment  
L-bolts. That will spoil the mount’s polar alignment. Remem-  
ber, once the mount is polar aligned, the telescope should be  
moved only on the R.A. and Dec. axes. To point the scope  
overhead, first loosen the R.A. lock lever and rotate the tele-  
scope on the right ascension axis until the counterweight  
shaft is horizontal (parallel to the ground). Then loosen the  
Setting circles: R.A. scaled in 10 min. increments, Dec.  
scaled in 2° increments for N or S hemisphere  
Polar axis latitude adjustment: 5° to 75°  
Polar axis finder scope: Optional  
Motor drives: Optional  
9
10  
11  
One-Year Limited Warranty  
This Orion SkyView Pro EQ Mount is warranted against defects in materials or workmanship  
for a period of one year from the date of purchase.This warranty is for the benefit of the original  
retail purchaser only. During this warranty period Orion Telescopes & Binoculars will repair or  
replace, at Orion’s option, any warranted instrument that proves to be defective, provided it is  
returned postage paid to: Orion Warranty Repair, 89 Hangar Way, Watsonville, CA 95076. If the  
product is not registered, proof of purchase (such as a copy of the original invoice) is required.  
This warranty does not apply if, in Orion’s judgment, the instrument has been abused, mishan-  
dled, or modified, nor does it apply to normal wear and tear. This warranty gives you specific  
legal rights, and you may also have other rights, which vary from state to state. For further war-  
ranty service information, contact: Customer Service Department, Orion Telescopes &  
Binoculars, P. O. Box 1815, Santa Cruz, CA 95061; (800)676-1343.  
Orion Telescopes & Binoculars  
Post Office Box 1815, Santa Cruz, CA 95061  
Customer Support Help Line (800)676-1343 • Day or Evening  
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