Brunson 771 - Page 17

13 Operation and Adjustment Manual
xonly).ThisLEDlightsourcefitsintothereceptacle(red
arrowinFigure2.8).Thesupplytransformerworkswith
either110Vor220Vsources.Installationorremovalofthe
lightsourceissimpleandquick.Simplyinstallthetwo‐
wayadapteronthecross‐axislightingreceptacle,andpush
the
LEDlamphousinginuntilitclicksintoplace.Thelight
sourcehasanin‐lineswitchforeasycontrolofthelight.

Rememberthatthefocusofthecross‐axistelescopeisper‐
manentlyfixedatinfinity.Thistelescopeismeanttobe
usedasacollimatororautocollimator.
Wewilldiscussthis
more,lateroninthemanual.


Illuminatingthemaintelescopereticle.Whenyouwishto
usethemaintelescopeforcollimation,autocollimation,orreticle
projection,youmustinstallamodel196‐1combinationeyepiece
unit.Todothis,removetheshortsectionofthemaintelescopebar‐
rellocatedjustinfrontoftheeyepiece(SeeFigure2.9),andreplace
itwiththe196‐1eyepieceadapter.Notethatthe196‐1hasa
knurledlockringwhichallowsyoutotightentheadapterinany
givenorientationonthetelescopebarrel.

Beforeinstallingthiseyepiece
adapteronthetelescope,make
suretheknurledlockring(red
arrowinFigure2.10)issecured
againsttheadapter.Itshouldbe
“bottomedout”onthethreads
ratherthanlooseonthethreads
orneartheopenendofthe
adapter.Thenthreadthe
adapterintothemaintelescope
barrelasfarasyoucan.Next,
backofftheadaptertothede‐
siredradialorientation(lamp
receiverpointinguporpointing
down)andlockitinplaceby
turningtheknurledlockring
towardthefrontofthetele‐
scope.

Next,removetheeyepieceassemblythatisstill
con‐
nectedtotheshortsectionofthetelescopebarrelwhich
wasremoved,andinstallitonthe196‐1eyepiece
adapter.

Toinstallthelight,removethecapfromthelampre‐
ceiver(undertherightthumbinFigure2.10).Thenin‐
stallthetwo‐wayadapterbythreadingitsknurledring
ontothelampreceiver.PlugintheLEDlightsource
untilitclicksintheadapter.

Figure2.8
Figure2.9
Note:Toinstallarightangleview‐
ingeyepieceonthemaintelescope
(convenientforveryhighangle
shots),youmaywishtoinstalla193
‐Lratherthanthe196‐1.Theseac‐
cessoriesareinstalledinbasically
thesameway,byfirstremovingthe
shorttubesectioninfrontofthe
eyepiece.