Mounting The Viewfinder; X 30 Viewfinder (8' Lx100); Attaching The Viewfinder; Focusing The Viewfinder - Meade 8" LX100 Series Instruction Manual

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6. Mounting The Viewfinder
a. 6
x
30 VIEWFINDER
(8"
LX100)
The
standard 6x30mm
viewfinder is shipped
in
its mounting bracket
with each 8"
LX100
Modeltelescope.
Mounting screws
for the
viewfinder bracket have been threaded into the top of the main telescope's rear cell,
in the
hole positions where the viewfinder bracket
will
be
seated.
See Fig.
12.
1)
Attaching the Viewfinder
To attach the
viewfinder, remove the
2
viewfinder mounting screws from the rear cell, using one of the
hex
wrenches provided with
the
telescope; place
the viewfinder with bracket
ovel
these mounting holes and then
replace
the 2
mounting screws
to securely attach the viewfinder bracket to the rear
cell.
Tightening these
niounting screws to a "firm feel" is sufficient;avoid over-tightening, which might cause
the
rear cellthreads
to
strip.
WARNING:
Never use set screws
on any part of the
optical
tube
assembly, except those factory-supplied
set screws included with the basic telescope or
with optional accessories. Longer non-standard set screws
may protrude too far into
the optical
tube and cause serious damage
to
the primary
mirror.
2) Focusing the Viewfinder
The
6x30mm
viewfinder has been
factory pre-focused at
infinity.
Should this focusing need adjustment for
your eyes, loosen the knurled collar
at
the objective lens-end
of the
viewfinder (#3, Flg.
12),
enabling rotation
of the objective
lens
cell forward or backward
for precise focusing. Then tighten down the
knurled collar
against
the objective lens cell to lock the
focus in
place.
Note that
no
focusing is possible
or necessary
al
the eyepiece end
of
the viewfinder.
3)
Collimating the Viewfinder
The
viewfinder
will require
alignment, or
collimation,
with the
main
telescope.
Using
the
25mm eyepiece,
point the
main
telescope at some easy to find land object
(e.9. the top of a telephone pole or corner of
a
building) at least 200 yards distant.
Center a
well-defined object
in
the main telescope. Then, using one
of
the hex wrenches provided, tighten
or
loosen,
as
appropriate,
the
viewfinder's
3
collimation screws
(#4, Fig. 12) untilthe crosshairs of the viewfinder are
precisely centered
on the object already
centered
in
the
main
telescope.
With this collimation accomplished, objects located first
in
the wide-field viewfinder will
then
be
centered
in
the main telescope's
field
of
view.
Once attached,
the
viewfinder may be left
permanently mounted
onto the telescope's rear
cell.
The viewf
inder
need not
be removed when storing the telescope in
its
carrying case.
(1)
Mounting Screw
(2) Objective Lens
Cell
(3) Knurled Collar
(4)
-Collimation Screws
(5)
Eyepiece
Fig.
12: 6x30
Viewfinder for 8"
LX100
Telescopes