background image

4

finder scope or eyepieces with your fingers. The optical sur-
faces have delicate coatings on them that can easily be
damaged if touched inappropriately. NEVER remove any lens
assembly from its housing for any reason, or the product war-
ranty and return policy will be void.

1. Lay the equatorial mount on its side. Attach the tripod

legs, one at a time, to the mount by sliding the bolts
installed in the tops of the tripod legs into the slots at the
base of the mount and tightening the wingnuts finger-tight.
Note that the accessory tray bracket attachment point on
each leg should face inward.

2. Tighten the leg lock knobs at the base of the tripod legs.

For now, keep the legs at their shortest (fully retracted)
length; you can extend them to a more desirable length
later, after the scope is completely assembled.

3. With the tripod legs now attached to the equatorial mount,

stand the tripod upright (be careful!) and spread the legs
apart enough to connect each end of the accessory tray
bracket to the attachment point on each leg. Use the bolt
that comes installed in each attachment point to do this.
First remove the bolt, then line up one of the ends of the
bracket with the attachment point and reinstall the bolt.
Make sure the smooth side of the accessory tray bracket
faces upwards.

4. Now, with the accessory tray bracket attached, spread the

tripod legs apart as far as they will go, until the bracket is
taut. Attach the accessory tray to the accessory tray
bracket with the 3 wingnut-head bolts already installed in
the tray. This is done by pushing the bolts up through the
holes in the accessory tray bracket, and then threading
them into the holes in the accessory tray.

5. Next, tighten the bolts at the tops of the tripod legs, so the

legs are securely fastened to the equatorial mount. Use
the larger wrench and your fingers to do this.

6. Orient the equatorial mount as it appears in Figure 1, at a

latitude of about 40, (i.e., so the pointer next to the latitude
scale—located directly above the latitude locking t-bolt—
is pointing to the hash mark at “40.”) To do this, loosen the
latitude locking t-bolt, and turn the latitude adjustment t-
bolt until the pointer and the “40” line up. Then tighten the
latitude locking t-bolt. The declination (Dec.) and right
ascension (R.A.) axes may need repositioning (rotation)
as well. Be sure to loosen the R.A. and Dec. lock knobs
before doing this. Retighten the R.A. and Dec. lock knobs
once the equatorial mount is properly oriented.

7. Slide the counterweight onto the counterweight shaft.

Make sure the counterweight locking thumbscrew is ade-
quately loosened so the metal pin the thumbscrew pushes
against (inside the counterweight) is recessed enough to
allow the counterweight shaft to pass through the hole in
the counterweight.

8. Now, with the counterweight locking thumbscrew still

loose, grip the counterweight with one hand and thread
the shaft into the equatorial mount (at the base of the dec-
lination axis) with the other hand. When it is threaded as
far in as it will go, position the counterweight about

halfway up the shaft and tighten the counterweight locking
thumbscrew.

9. Attach the two tube rings to the equatorial head using the

bolts that come installed in the bottom of the rings. First
remove the bolts, then push the bolts, with the washers
still attached, up through the holes in the tube ring mount-
ing plate (on the top of the equatorial mount) and
re-thread them into the bottom of the tube rings. Tighten
the bolts securely with the smaller wrench. Open the tube
rings by first loosening the knurled ring clamps.

10. Lay the telescope optical tube in the tube rings at about the

midpoint of the tube’s length. Rotate the tube in the rings
so the focus knobs are on the underside of the telescope.
Close the rings over the tube and tighten the knurled ring
clamps finger-tight to secure the telescope in position.

11. Now attach the two slow-motion cables to the R.A. and Dec.

worm gear shafts of the equatorial mount by positioning the
setscrew on the end of the cable over the indented slot on
the worm gear shaft. Then tighten the setscrew.

12. Place the finder scope in the finder scope bracket by first

backing off all three alignment screws until the screw tips
are flush with the inside diameter of the bracket. Place the
O-ring that comes on the base of the bracket over the
body of the finder scope until it seats into the slot in the
middle of the finder scope. Slide the eyepiece end (narrow
end) of the finder scope into the end of the bracket’s cylin-
der that does not have the adjustment screws. Push the
finder scope through the bracket until the groove on the
eyepiece end of the finder scope lines up with the three
adjustment screws. The O-ring should seat just inside the
front opening of the bracket’s cylinder. Tighten the three
alignment screws equally to secure the finder scope in
place. You may need to first back off the knurled locking
nuts on the adjustment screws to do this.

13. Insert the base of the finder scope bracket into the dove-

tail slot on the top of the focuser housing. Lock the bracket
in position by tightening the knurled setscrew on the dove-
tail slot.

14. Insert the chrome barrel of the star diagonal into the

focuser drawtube and secure with the thumbscrew on the
drawtube.

15. Then insert an eyepiece into the star diagonal and secure

it in place with the thumbscrews on the diagonal. (Always
loosen the thumbscrews before rotating or removing the
diagonal or an eyepiece.)

3. Balancing the Telescope

To insure smooth movement of the telescope on both axes of
the equatorial mount, it is imperative that the optical tube be
properly balanced. We will first balance the telescope with
respect to the R.A. axis, then the Dec. axis.

1. Keeping one hand on the telescope optical tube, loosen

the R.A. lock knob. Make sure the Dec. lock knob is
locked, for now. The telescope should now be able to

Summary of Contents for SKYWATCHER 9024

Page 1: ...Consumer Optical Products Since 1975 Customer Support 800 676 1343 E mail support telescope com Corporate Offices 831 763 7000 P O Box 1815 Santa Cruz CA 95061 INSTRUCTION MANUAL Orion Skywatcher 90mm...

Page 2: ...rweight Counterweight shaft Latitude locking t bolt Azimuth adjustment knob Accessory tray bracket attachment point Tripod leg lock knob Piggy back camera adapter Tube mounting rings Finder scope brac...

Page 3: ...EQ Refractor is designed for high resolution viewing of astronomical objects With its precision optics and equatorial mount you ll be able to locate and enjoy hundreds of fascinating celestial denizen...

Page 4: ...unterweight with one hand and thread the shaft into the equatorial mount at the base of the dec lination axis with the other hand When it is threaded as far in as it will go position the counterweight...

Page 5: ...ded to center it on the crosshairs Otherwise you ll have to make coarser adjust ments to the alignment screws to redirect the aim of the finder scope Make sure the knurled lock nut on each alignment s...

Page 6: ...tude The R A and Dec values for celestial objects can be found in any star atlas or star catalog So the coordinates for the Orion Nebula listed in a star atlas will look like this R A 5h 35 4m Dec 5 2...

Page 7: ...pe the light polluted city sky and head for darker country skies You ll be amazed at how many more stars and deep sky objects are visible in a dark sky Cooling the Telescope All optical instruments ne...

Page 8: ...other source of heat as they will cause heat wave disturbances that will distort the image you see through the telescope Especially important for observing faint objects is good trans parency air fre...

Page 9: ...e higher the magnification you use the dim mer the image will appear So stick with low power when observing deep sky objects because they re already very faint Consult a star atlas or observing guide...

Page 10: ...You are now exposing your first deep sky object While exposing through the camera lens you will need to monitor the accuracy of the mount s tracking by looking through the illuminated reticle eyepiec...

Page 11: ...en cleaning the lens as this will scratch it The tissue may leave fibers on the lens but this is not a problem they can be blown off with a blower bulb Never disassemble the telescope or eyepieces to...

Page 12: ...here the telescope is out of balance tilting Figure 2e Telescope is now balanced on the Dec axis i e it remains horizontal when hands are released Figure 2a Balancing the telescope with respect to the...

Page 13: ...Latitude scale Figure 3 The equatorial mount D E C L I N A T I O N A X I S Figure 4 To find Polaris in the night sky look north and find the Big Dipper Extend an imaginary line from the two Pointer St...

Page 14: ...nting south Note that in all these illustrations the mount and tripod remain stationary only the R A and Dec axes are moved Figure 5b Telescope pointing north Figure 5c Telescope pointing east Figure...

Page 15: ...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...

Page 16: ...et with your fingers Push the finder scope through the bracket until the O ring seats just inside the front opening of the bracket s cylinder Now release the tensioner and tighten the adjustment screw...

Reviews: