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The 8-inch Celestron telescope is not as easily portable as the Questar,
but can still fit in the trunk or back seat of a car for viewing from dark-sky sites.
KEY POINTS
2. Disengage the RA or dec brake before moving the telescope by hand.
3. The telescope will tip over in dec if the brake is not engaged. Never leave the
dec brake off when the telescope is not actually being moved.
4. Although the dec fine adjust knob can (should) be turned with the dec brake on,
this is not the case for the RA fine adjust knob -- loosen the brake before
moving even a smidgen in RA.
TRIPOD AND WEDGE SETUP
2. Remove the bungie cord and gently lie the legs flat on the ground. Do not let them fall there.
3. Lift the center pedestal so that the legs swing underneath. The tripod should be able to stand
on its own at this point.
4. Pull the legs spars together at the center. Rotate the central hub cover CW to uncover the locking slots.
5. Hook the two loose spars into the central hub. Let the cover rotate CCW back into place.
6. Unscrew the three screws from the top of the pedestal, or find them in the trunk. Be sure you're
using the smaller-threaded screws, not the ones for the telescope base, which look very similar. Note
which holes they're in (next to each leg) -- the other three holes are not threaded.
7. Place the wedge atop the pedestal and align the slots with the threaded holes on the
pedestal. Put a screw through each slot, and then tighten all three.
8. Move the tripod to a flat, stable location before mounting the telescope, and rotate the
assembly so that the inclined wedge surface is pointing roughly north.
MOUNTING THE TELESCOPE
2. Note which way the telescope is pointed (base end towards the thinner foam) and
rotated (with the piggyback finderscope nestled against the rear foam panel).
3. Lift the scope using the grey Y-arm, and then carry it by gripping the Y-arm on each
side of the tube. Try not to use the telescope tube itself as a handle.
4. On the top edge of the wedge mount is a slot. On the bottom of the telescope base is
a single screw. Slide the screw into the slot so that the bottom surface of the base
is flush with the inclined surface of the wedge. It should rest stably in this position,
but if there's more than one of you, one person can continue to support the telescope
in its inclined position. Do not tighten the screw just yet.
5. Release the RA brake. This is the paddle on the top side of the telescope base.
Turn it CCW, so that the telescope will turn freely relative to the base.
6. Find the other two screws in the trunk. They go in the two holes on the back of the
wedge surface. Some wiggling of the telescope base may be necessary to get the screw
holes aligned. Do not tighten any one of the screws until the others have been inserted
and started. Then tighten all of them snugly. There will still be a slight gap between the
wedge and scope base.
7. The scope is now mounted. Rotate the telescope in RA so that the finderscope is on
top, if it's not already there.
8. Unlock the dec brake, and rotate the front aperture (pointed towards the base in the
storage position) upwards to the zenith. Lock the dec brake again.
EYEPIECE INSTALLATION
2. In the white cardboard box in the trunk is the diagonal, a 90 degree reflector system.
Remove the diagonal from its box and insert the shiny tube fully into the eyepiece
socket on the telescope. Tighten the setscrew snugly.
3. There are two eyepieces in the trunk, a 40mm and a 25mm. The 40mm will give a wider field
of view and is better for alignment and focusing. You may replace it with the 25mm later if
you want higher magnification on a target.
4. Remove the 40mm eyepiece from its box and take off the two dust caps. Insert it into the
socket on the diagonal, and tighten the setscrew snugly.
5. To rotate the eyepiece assembly to the most comfortable position, loosen the collet
above the first setscrew, rotate the diagonal, and retighten the collet.
6. Pull the front aperture cap off the telescope.
OBSERVING
2. To move slightly in dec, turn the dec fine adjust knob at the base of the fork. This knob has
a limited range of motion, so try not to use it for really huge moves.
3. To move slightly in RA, turn the RA fine adjust knob on the base. The RA brake must be released for
this to work -- if you encounter resistance turning the knob, check the brake. If the mount is
set up roughly equatorial (pointed north), then RA adjustments will let you track objects as they
move across the sky.
4. Use the finderscope to center the target object on the crosshairs, and then
make fine pointing adjustments using the knobs.
5. Focus the object in the eyepiece using the focus knob, located next to the
eyepiece mount.
SHUTDOWN AND REPACKING
2. Remove the eyepiece from the diagonal, put both dust caps on, and return it to its box.
3. Take the diagonal from the eyepiece socket on the telescope, and put it back in its box.
4. Put the eyepiece plug back into the eyepiece socket, and tighten the setscrew just a few
turns -- enough to keep the plug from sliding out.
5. Rotate the scope in dec to the storage position (aperture pointing towards the base) and lock the
dec brake.
6. Remove the two lower screws that hold the telescope base to the wedge.
7. Loosen (but do not remove) the top screw in the slot. A single turn should be sufficient.
8. Holding the telescope by the fork arms, lift it from the slot, and place it in the trunk,
with the eyepiece end toward the left and the finderscope on the top rear. Lift on the front
fork arm to rotate the scope so that the finderscope is snug against the rear foam, or else
the lid may scrunch it.
9. Unscrew the wedge from the tripod pedestal.
10. Unlock the spars from the hub, and fold the tripod legs back around to
the storage position. Secure them with the bungee cord.
11. Close the trunk.
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