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9. 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.
10. 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.
11. Firmly tighten both polar axis pivot screws with the hex key.
Attach Pier Adapter to Pier Post (purchased separately)
If you purchased the pier from Astro-Physics, the pier adapter of the 1200 may be already attached to the top of the pier. If
you are constructing your own pier or tripod, you will need to incorporate this part. Two models of the pier adapter are now
available for use with the 1200 from Astro-Physics. If you have more than one pier, you may wish to purchase two adapters
so that you can leave them attached permanently. These pier adapters can be used with prior versions of the 1200 mount.
1200 Standard Pier Adapter (part # 1200SPA)
The Standard Pier Adapter includes the machined flat plate, four machined aluminum lock
knobs with stainless washers, the azimuth adjuster block, six 5/16”-18 x 5/8” side bolts and
washers. All machined parts are black anodized. The Standard Pier Adapter was designed
to fit into a 10" x 0.094"
wall tube with 6 screws threaded into the side or bolted onto a flat
surface by using the four countersunk thru-holes (pier adapters from early production runs may
not have the thru-holes).
1200 Rotating Pier Adapter with Azimuth Bearing (part # 1200RPA)
The Rotating Pier Adapter rotates on a bearing surface for ultra-smooth operation. It
includes a machined flat plate assembly with four machined aluminum lock knobs and
stainless washers, the azimuth adjuster block and six 5/16”-18 x 5/8” side bolts with
washers. This adapter allows you to lock the mount down with no need to loosen the base
during azimuth adjustment. Observers who use the 1200 as a portable mount and set up
frequently will find this especially useful. Unlike the standard pier adapter, the rotating pier
adapter cannot be bolted to a flat surface without an adapter.
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