ASTRO-PHYSICS 1200 Handbuch - Seite 4

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6. Guide (wiggle) the bar to the desired position, insert the screws in both ends and lightly tighten so that you still have

some ability to move the bar.

7. Note that the altitude adjustment knob is attached to a threaded rod that travels through the altitude adjuster bar.

Turn the knob so that the altitude adjuster bar is positioned approximately in the middle of the threaded rod. You

should see about half of the threaded rod protruding from both sides of the altitude adjuster bar. This will allow you to

move the mount fully within the altitude range.

8. At the end of the threaded rod mentioned in the last step, you will see a small brass altitude adjuster thrust pad. This

is the part that will come in contact with the polar axis as you ease it back into position. Loosen the altitude-locking

knob (motor/gear side) and lower the polar axis so that it rests comfortably on this pad. The threaded rod should be

positioned at a right angle to the polar axis housing. Firmly tighten the altitude adjustment screws.

9. Turn the altitude adjustment knob to raise or lower the polar axis to your approximate observing latitude. Tighten the

altitude locking knobs with finger pressure only. You do not need to tighten with the hex key.

10. Firmly tighten both polar axis pivot screws with the hex key.

ATTACH PIER ADAPTER TO PIER POST: If you purchased the pier from Astro-Physics, the pier top adapter of the 1200

is already attached to the top of the pier. If you are constructing your own pier or tripod, you will need to

incorporate this part. The pier adapter was designed to fit into a 10" x 0.1" wall tube. Use three screws to attach

this part. Note that the pier adapter has six 5/16"-18 holes in its side. With the Astro-Physics pier, you can

choose a "north" or "south" facing pier leg by choosing the set of 3 holes that you prefer.

ASSEMBLE PIER

Begin by assembling the portable pier at the

desired observing location. Note which direction is

north.

1. Slide the three legs onto the nubs of the base

and rotate the assembly so that one of the legs

points toward north (or south, if this is your

preference).

2. Place the pier tube on the base orienting the

center azimuth block directly over the leg that

is oriented to the north (or south).

3. Attach the tension rods. The turnbuckles

should be drawn tight until the whole assembly

is stiff enough to support your weight without

movement.

ASSEMBLE POLAR AXIS ASSEMBLY TO PIER OR TRIPOD

In order to track the motion of astronomical objects, the polar axis must be positioned so that an imaginary line drawn

through the center of the axis points toward the celestial pole. At this stage of the assembly process, you want to

position the mount so that it points roughly north.

1. Remove the four hand knobs on the pier top adapter and keep them close at hand.

2. Prior to lifting the polar axis assembly into place, turn the fine azimuth adjustment knobs so that the space between

them is wide enough to allow the center azimuth block to fit easily between them. Ensure both pier top and polar

axis assembly mating surfaces are clean and free of dirt.

3. Place the polar axis assembly onto the pier so that the center azimuth block fits between the fine azimuth

adjustment knobs.

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