BURGESS
Optical
/
TMB
MRF
TM
Finder Instructions
Burgess Optical Company
7756 Oak Ridge Hwy
Knoxville, Tennessee 37931, USA
(865) 769-8777
Front
Burgess Optical
©
June 2005
The Burgess Optical/TMB MRF
TM
finder is a single-
power red-dot type finder adapted for mounting on
telescopes and binoculars of all types. Features
include four different reticules, seven levels of
brightness control, and a light weight and compact
design. The MRF
TM
finder has a precision ground
reflex lens with minimal parallax. Included with
the MRF
TM
finder is a base that allows the MRF
TM
finder to be easily removed and stored.
The MRF
TM
finder is used with both eyes open
and one eye directly behind the MRF
TM
finder.
One of four red reticules is superimposed on the
sky, and the telescope is aimed by moving
the telescope until the red dot of the reticule
is superimposed on the target.
On the top of the MRF
TM
finder is a Power/Brightness
Switch, which is topped with a Battery Cover, and an
Up/Down Adjustment. On the rear of the MRF
TM
finder,
and accessed from the bottom, is a Reticule Selector
Switch. On the left side of the MRF
TM
finder is a
Left/Right Adjustment and two Base Securing Screws for
attaching the MRF
TM
finder to the mounting base. On the
right side of the MRF
TM
finder is an Adjustment Lock for
preventing the Up/Down and Left/Right adjustments from
moving, and an Up/Down Click Adjust for adjusting the
amount of click feedback when making Up/Down
adjustments.
Use and Operation
First, turn on the MRF
TM
finder by rotating the
Power/Brightness Switch. The Off position is as pictured
with the 0 on the switch aligned with the white dot. The
switch has click stops at the seven Brightness settings
and the Off position. Turn the power/brightness control
until the desired brightness of the reticule is reached. A
setting of 1 is the dimmest setting suitable for night use.
Second, rotate the Reticule Selector until the desired
reticule is displayed. Lastly, it is a good practice to verify
that the MRF
TM
finder is aligned with the telescope each
time the MRF
TM
finder is attached to the telescope.
Keep both eyes open and position one eye at a
comfortable distance behind the MRF
TM
finder. The eye
behind the finder will see the reticule pattern
superimposed upon the view seen by the other eye. Eye
placement behind the MRF
TM
finder is not critical
because the finder has very little parallax, that is, the
reticule remains superimposed on the same part of the
sky as the eye moves behind the MRF
TM
finder. The
telescope is moved until the center dot overlays the
object to be viewed.
Reticules
Any one of four different reticules can be selected.
Illustrated below are the four reticule patterns: a single
dot, such as those found with traditional red-dot finders,
a dot within a circle, crosshairs, and a dot within a circle
with crosshairs. To select one of the reticules, rotate the
Reticule Selector Knob until the desired reticule is
displayed. Remember to adjust the Brightness Switch to
ensure that the reticule is visible.
Single Dot
Dot within
Circle
Crosshairs
Dot, Circle,
and
Crosshairs
