-22-
2. Quick azimuth adjustment-by loosening the manual
knob described above.
3. Bubble level for rapid tripod/wedge leveling.
4. Etched latitude scale for fast adjustment of the
latitude angle.
To assemble the Equatorial Wedge follow this procedure (note
that all required wedge hardware and manual knob are shipped
within the wedge carton):
1. The wedge .consists of two basic parts, the wedge
body and the tilt-plate, as shown in Figs. 7A and
7B. Attach the tilt-plate to the wedge body by means
of the hex-screws (Model 2120) or knobs (Model 2080)
provided. Two screws (or knobs), with washers,
should be used on each side of the wedge body,
so that a total of 4 screws (or knobs) attach the
tilt plate to the wedge body.
2. Place the wedge onto the field tripod, with the
central threaded rod of the tripod fitting through
the center hole in the floor of the wedge. Thread
the 2~"-diameter manual knob onto the threaded rod
of the tripod, and firmly tighten the manual knob.
3. Model 2120 owners: When engaging in long-exposure
astrophotography with your telescope, it is ad-
visable to thread-in the 3 additional socket
screws through the wedge floor and into the top
of the field tripod. These screws fit through the
oval-shaped slots in the wedge floor; the wedge
must first be turned horizontally on the field
tripod, so that the oval slots lie over any 3 of
the 6 threaded holes on the top surface of.the
tripod head. Tighten the 3 socket screws with the
hex wrench provided. Note, however, that for
normal visual observations through the Model 2120,
use .of these socket screws is .not required: the
manual knob (Step (2) above) is generally sufficient
for rigid attachment of the wedge to the tripod.
The 3 additional socket screws are not provided with the
Model 2080, nor does the Model 2080's wedge have provision
for the attachment of these screws, since firm tightening
of the manual knob is more than sufficient, even in the most
demanding applications.
A fine latitude adjustment mechanism (necessary only £or
precision astrophotographic polar alignment) is included in-
one slot on the side of the wedge for th~ Model 2080; two of
these mechanisms (one at each side of the wedge) are provid-
ed with the wedge for the Model 2120. Loosen the hex-screw
at the side of the wedge, and slide each mechanism so that
the I-inch long screw (located just inside the vertical wedge
wall) presses up against the bottom surface of the tilt-plate.
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