Vixen Porta A70Lf User manual


VIXEN
A70Lf, A80Mf, R130Sf
Vixen Optics a Division of MrStarGuy, Inc. www.vixenoptics.com
MrStarGuy, Inc.

PREFACE ThankyouverymuchforyourpurchaseofaVixenastronomicaltelescope
ThismanualappliestotheA70Lf,A80MfandR130Sftelescopes.Youmay
occasionallyfinddescriptionsinthetextnotrelevanttoyourparticularmodel.
Readtheinstructionsforyourmountalongwiththismanualifyoupurchasedthe
telescopeasacompletepackage.

WARNING! Neverlookdirectlyatthesunwiththetelescopeoritsfinderorguidescope.
Permanentandirreversibleeyedamagemayresult.

CAUTIONDonotleavetheopticaltubeuncappedinthedaytime.Sunlightpassingthroughthe
telescopeorfinderscopemaycauseafire.
Donotusetheproductwhilemovingorwalking,injuriescouldresultfromacollision
withobjectsorfromstumblingorfalling.
Keepsmallcaps,plasticbags,orplasticpackingmaterialsawayfromchildren.These
maycauseadangerofswallowingorsuffocation.
Donotusetheproductinawetenvironmentanddonothandlewithwethands.

HANDLING AND STORAGE
Donotleavetheproductinsideacarinbrightsunshineorinotherhotplaces.Keep
anystrongheatsourcesawayfromtheproduct.
Whencleaning,donotusesolventssuchaspaintthinnerorsimilarproducts.
Donotexposetheproducttorain,water,dirtorsand.
Avoidtouchinganylensormirrorsurfacesdirectlywithyourhands.Incasealensor
mirrorbecomesdirtywithfingerprintsorgeneralsmears,gentlywipeitusinga
commerciallyavailablelenscleanerandalenscleaningpaperorcloth,orconsult
yourlocalVixendealer.
Blowoffdustonlensesusingacommerciallyavailableblowerbrush.Donotuse
compressedair.
Forstorage,keeptheproductinadryplaceanddonotexposetodirectsunlight.

SETTING UP THE TELESCOPE- Refertoyourmountinstructionsalongwiththismanual.
AttachingthetelescopetubetotheMount(GP2mountandA80Mfopticaltubeshownhere)
Loosenboththedovetail‐
platelockscrewand
safetyscrewuntilthetips
ofthesescrewsnolonger
extendedintotheinner
partofthedovetailblock.

Slidethedovetail
mountedscopeintothe
dovetailmountingblock
asshowninthefigure.
Tightenthedovetaillock
screw(centeredonthe
notch)ontothedovetail
tubeplateuntilsnug.

Firsttightenthedovetaillockscrew,andthentightenthesmallchromesafetyscrewontothedovetailmountingblockuntil
snug.

MrStarGuy, Inc.

ATTA
C
1. Loose
chro
m
brack
e
screw
telesc
o

ATTA
C
Backoutt
h
adjustme
n
thefinder
allowpass
findersco
p
surethea
d
screwsdo
thebrack
e
OnePind
o
screwin/
o
models.
Pullupth
e
onthebra
thatthefi
n
canslidei
n
bracketri
n
eyepiece
e
Releaseth
intothew
i
onthefin
d
Loosenth
e
bracketlo
c
onthetel
e
C
HING T
H
nthe
m
efinder
e
tlock
onthe
o
pe.
C
HING T
H
h
etwo
n
tscrewson
bracketto
ageofthe
p
e.(Make
d
justment
notfalloff
e
t.)
o
esnot
o
utonsome
e
fixedstud
cketringso
n
dertube
n
tothe
n
gfromits
e
nd.
efixedstud
i
degroove
d
ertube.
e
finder
c
kscrews
e
scope.
H
E FIND
E
H
E FIND
E



E
R SCOP
E
E
R SCOP
E
E
(A70Lf)
2. Atta
sco
p
the
Tigh
bra
c
sec
u
E
(A80Mf
Slidethe
finder.
T
Position
ofthefi
n
Tighten
t
adjustm
e
thatthe
f
aligned
a
figure.
Attacht
h
asshow
n
theright
finderb
r
securely
.
chthefinde
p
easshowni
n
figure
tenthefinde
c
ketlockscre
w
u
rely.
OR R13
0
rubberO‐rin
g
T
herearetwo
g
theO‐ringon
t
n
derscope. 
t
hetwo
e
ntscrewsso
f
inderscopei
s
a
sshowninth
e
h
efinderbrac
k
n
inthefigure
o
.Tightenthe
r
acketlockscr
e
.

r
n

.
r
w

0
Sf) 
g
ontotheeye
p
g
roovesonth
e
t
henarrowgr
o
s

e


k
et
o
n
e
w
p
ieceendoft
h
e
findertube.
o
oveatthemi
d
h
e
d
dle
MrStarGuy, Inc.


HOW TO ALIGN THE FINDER SCOPE-Besuretoalignthefinderscopewiththetelescopebefore
youstartobserving.
ALIGNING THE FINDER SCOPE – A70Lf
*Chooseaconspicuoustargetinthedistanceandplace
thetargetinthecenterofthefieldofviewofthe
telescope.Intheillustration,adistanttowerisbrought
intothecenterofthefieldofviewofthetelescope.
*Next,lookthroughthefinderscope.Youshouldfind
thesametargetwithinthefinder’sfieldofview.Inthe
illustration,thetowerisseenintheupperrightofthe
finder’sfieldofview.

*Aligntheopticalaxis(fieldofview)ofthefinder
scopewiththeopticalaxis(fieldofview)ofthe
telescope.Adjustthefinderscopebylooseningor
tighteningtwoorthreeadjustmentscrewsatatimein
turnuntilthetargetisinthesameposition,inthe
centerofthecrosshairs.Intheillustration,thetopof
thetowerisinthecenterofthecrosshairs.Thetopof
thecanbemovedtowardthecenterofthecrosshairs
bylooseningtheadjustmentscrewA,Bandtightening
theadjustmentscrewC.
ALIGNING THE FINDER SCOPE – A80Mf or R130Sf
*Chooseaconspicuoustargetinthedistanceandplace
thetargetinthecenterofthefieldofviewofthe
telescope.Intheillustration,adistanttowerisbrought
intothecenterofthefieldofviewofthetelescope.
*Next,lookthroughthefinderscope.Youshouldfind
thesametargetwithinthefinder’sfieldofview.Inthe
illustration,thetowerisseenintheupperrightofthe
finder’sfieldofview.

Aligntheopticalaxis(fieldofview)ofthefinderscope
withtheopticalaxis(fieldofview)ofthetelescope.
Adjustthefinderscopebylooseningortighteningthe
adjustmentscrewsAandBinturnuntilthetargetisin
thesameposition,inthecenterofthecrosshairs.
Thetopofthecanbemovedtowardthecenterofthe
crosshairsbylooseningtheadjustmentscrewAand
tighteningtheadjustmentscrewB.

MrStarGuy, Inc.


ACCESSORY CHART
A70Sf,A80SfandR130SfVisualconfiguration
A70Sf,A80SfandR130SfPhotographicconfiguration

SPECIFICATIONS- TheSpecificationsaresubjecttochangewithoutnotice.
SpecificationsA70L
f
A80M
f
R130S
f

Item#26022603 2604
OpticalDesignAchromaticRefractor NewtonianReflector
EffectiveAperture70mm80mm 130mm
FocalLength900mm(f/12.9) 600mm(f/7.5) 650mm(f/5.0)
ResolvingPower1.66arc.;11.01.45arcsec;11.3 0.89arcsec;12.3
LightGatheringPower100x131x 345x
TubeDiameter,Length&Weight76mmx865mm;1.9kg 90mmx860mm;2.5kg 160mmx572mm;4.0kg
Finderscope6x42mm6x30mm
Threads42mmforTring/31.7mmpush‐fit
MagnificationPL20mm,PL6.3mm PL20mm,PL6.3mm PL20mm,PL6.3mm
AccessoriesRoundTray,DiagonalPrism RoundTray
Photography
TotalWeight7.4kg8kg 8.9kg
Magnificationequalsfocallength/Eyepiece



MrStarGuy, Inc.

COLLIMATION
TheopticsofthetelescopearealignedcorrectlyatVixen’sfactorybeforeshipment.Itisrarethat
telescopesgooutofalignment,unlessitstubeisknockedstrongly.Followprocedurebelowto
determineifthetelescopeisoutofcollimation.
Examine the Collimation
Selectasecond‐orthird‐magnitudestarandplaceitthecenterofthetelescope’sfieldofviewbyusing
amoderatelyhighpowereyepiece.Focusthestarprecisely.Andthendefocusslightlyandyouwilllook
forstripedpatternsthatsurroundthestar.Ifthestripedpatterncanbeseenasaconcentricimage,
yourtelescopeisproperlyaligned
CollimatedProperlyMis‐Collimated
InFocusOutofFocusInFocusOutofFocus
MrStarGuy, Inc. 1010 Calle Cordillera, San Clemente, CA 92673
[phone] www.vixenoptics.com
MrStarGuy, Inc.