4
iOptron Corp. | 6E Gill Street | Woburn, MA 01801 USA | (781) 569-0200 | Toll Free (866) 399-4587 | www.iOptron.com
the
scope
with
accessories
back
and
forth
(see
photos
below).
Only
balance
one
axis
at
a
time
and
start
with
the
DEC
axis
first.
Double
check
the
mount
to
make
sure
both
the
RA
and
DEC
axes
are
balanced.
Return
the
mount
to
Zero
Position
after
balancing;
i.e.,
CW
Shaft
points
to
ground,
and
telescope
tip
is
at
its
highest
position.
Turn
Gear
Switch
Knob
by
90°
to
LOCK
position
to
re
‐
engage
the
worm
to
the
worm
wheel.
Retighten
the
Tension
Adjuster
as
the
last
step
to
lock
the.
9.
Connect
Cables:
Use
the
short
straight
RJ11
cable
to
connect
the
DEC
Control
Unit
to
the
Main
Control
Unit.
Connect
the
Go2Nova
®
8408
Hand
Controller
to
the
HC
port
on
the
main
unit.
Plug
in
a
12V
DC
power
supply
to
the
POWER
socket.
10.
Setting
Tension
Adjuster
Position:
Set
both
Gear
Switches
to
LOCK
positions
after
balancing
the
mount.
Fully
screw
in
the
Tension
Adjuster.
Turn
the
mount
power
on.
Press
#9
button
on
hand
controller
to
change
the
slew
speed
to
MAX.
Press
the
arrow
button
to
check
the
gear
meshing.
If
the
mount
motor
has
“grinding”
sound
(
which
is
not
harmful
)
while
slewing,
the
Tension
Adjuster
is
too
tight.
Release
1/8
to
1/4
turn
and
check
it
again.
If
there
is
excess
play
in
either
RA
or
DEC
axis,
or
even
the
gear
is
skipping,
the
gear
and
worm
is
not
meshed
properly.
Turn
the
Tension
Adjuster
more
clockwise.
You
may
need
to
readjust
the
Tension
Adjuster
for
different
payload.
11.
Polar
Alignment:
Remove
both
Polar
Scope
and
Polar
axis
covers.
Look
through
the
polar
scope
to
locate
Polaris
(or
Sigma
Octantis
at
southern
hemisphere).
Slightly
loosen
the
Tripod
Center
Rod
Knob.
Use
the
two
Azimuth
Adjustment
Knobs
to
center
the
pole
star
in
the
azimuth
direction,
followed
by
tightening
the
Center
Rod
Knob.
Slightly
loosen
2
Latitude
Locking
T
‐
bolts,
use
the
Latitude
Adjustment
Knob
to
adjust
the
latitude.
Tighten
the
2
locking
T
‐
bolts.
Polar Axis Cover
Polar Scope Cover
Polar Axis (R.A. axis)
Azi. Adj. Knob
Lat. Adj. Knob
Lat. Locking T-bolt
Quick
Polar
Alignment
Fast
and
accurate
polar
alignment
can
be
performed
with
iOptron’s
AccuAlign
TM
Polar
Scope.
(1)
Connect
the
Polar
Scope
illumination
LED
to
the
Reticle
socket
located
on
the
main
control
board.
Turn
the
mount
power
on.
Use
the
Hand
Controller
(“
MENU
”
=>
“
Settings”
=>
“Set
Eyepiece
Light
”)
to
set
illumination
intensity.
Polar Scope LED
(2)
Use
the
Hand
Controller
(
MENU
=>
“
Align
”
=>
“
Pole
Star
Position
”)
to
display
the
Polaris
Position
on
the
LCD
screen,
as
indicated
in
the
left
side
of
the
figure
below.
For
example,
June
22,
2014,
20:19:42
in
Boston,
US
(alt
N42°30’32”
and
long
W71°08’50”),
300
min
behind
UT,
the
Polaris
Position
is
0h45.8m
and
40.4m.
R.A. balance
DEC balance
