ASTRO-PHYSICS German Equatorial 1200GTO, Руководство пользователя

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BEFORE YOU LEAVE HOME
Since most of us must set up our instruments in the dark, in the cold or while battling mosquitoes, a bit of pre-planning and
organization is important. There are
few simple things that can be accomplished in the comfort of your home before heading
outside.
Gross Latitude Adjustment for 1200GTO German Equatorial Mounts
Mounts shipped starting in May, 2006. Beginning with Serial Number 1200572
NOTE: Older mounts will have slightly different latitude ranges.
The latitude range of the 1200 mount is approximately 22 - 69 degrees with considerable overlap at each position. Since
most astronomers typically observe within one latitude range, this adjustment is made just once, if at all. Prior to shipment,
we preset the mount to your latitude range for your convenience. We suggest that before you travel to an observing location,
determine the approximate latitude of your observing site and make the appropriate rough adjustment. If you live in or plan to
travel to locations that are 0-22 degrees latitude, we recommend our Hi-Lo Latitude Wedge Assembly (1200WDGA).
The four positions for the altitude adjustments have the following approximate ranges:
57.5° to 69° latitude - top position (1)
41° to 63° latitude - second position (2)
30° to 48.5° latitude - third position (3)
22° to 38° latitude - bottom position (4)
How to change the position of the altitude adjuster
1. Use only the R.A. axis. DO NOT attempt
to make these adjustments with the
declination axis in place and certainly not
with an instrument fully mounted.
2. Loosen both altitude-locking knobs about
1 turn.
3. Locate the side of the polar axis that
does not have the motor / gearbox
housing. Loosen (about 1 turn) the polar
axis pivot screw and altitude adjuster bar
fixing screws on this side only. With your
hand, push the polar axis upwards so
that the altitude-locking knobs are
positioned at the top of the altitude slot
(this is the maximum altitude position).
Some resistance will be felt with this
operation as you are pushing against the
weight of the polar housing and the
resistance of the remaining polar axis
pivot screw (which has not been
loosened).
4. Before attempting to remove or move the altitude adjuster bar, you must
tighten the altitude-locking knob on the motor / gearbox housing side.
This will prevent any downward movement of the polar axis during
positioning of the altitude adjuster bar.
A
B
C
D
E
Front
(North)
A
B
C
D
E
A
is the
Latitude
Hole
5. While supporting the altitude adjuster bar, remove the two screws that
support it on each side (4 screws in all). Keep the two ends of the bar in
contact with the side of the mount, don't remove the bar completely (this
tip is for your convenience).
6. Determine the latitude range that you need and position the altitude
adjuster bar so that the hole that is marked “A”, as shown in the diagram,
is located at the appropriate hole position numbered 1-4 in the diagrams
(above and next page). Note that hole “A” is located at the rounded part
in the center of the altitude bar. Hole “A” is the “latitude hole.”
7. Attach two of the screws (one on either side of the adjuster bar) through
the appropriate altitude adjustment position hole and into hole A of the
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