iOptron SkyGuider Pro Quick Start Manual

This instruction is for SkyGuider Pro polar scope
alignment. The tools needed are 2.5mm and 1.5mm hex
key wrench.
Warning: DO NOT over tightening the set screws.
Always release the one at the opposite side first. The
dial is made from glass and the holder is plastic.
Polar Scope Parts Name:
Objective lens Lock ring
Reticle Adj. Screws
• Eyepiece: Adjustable, for reticle focusing
• Objective lens: Adjustable, for object focusing
• Locking ring: Lock the objective lens tube
• Reticle illumination inlet: hole for LED
illumination
• Reticle Adj. Screws: 3 M2 set screws that secure
the reticle in place
How to align polar scope optical axis to mount RA axis:
If you are suspecting that the polar scope may
be misaligned, you may check it by putting a star in the
center of the polar scope reticle cross hairs and rotating
mount's RA axis. If the star stays in the center of cross
hairs, the polar scope is aligned to the mount's RA axis.
In the event the polar scope optical axis needs
to be adjusted, you can do this procedure at night while
pointing at Polaris, or any bright star. However, it is
probably easier to do it during the daytime using a
distant point, such as a flag pole or top of a building a
couple of hundred yards away, as your target.
1. Mount the SkyGuider Pro onto a tripod.
2. Release RA Clutch Disk slightly so the polar scope
can be rotated.
SkyGuider Pro Polar Scope Alignment (May 15, 2017)
Reticle illumination inlet
Eyepiece
3. Remove polar scope cover and base.
4. Rotate the polar scope so that the 12 o'clock mark
is leveled on the right side. Adjust the AZ base in
altitude and azimuth to center the object on to the
cross hairs.
5. Rotate the mount 180 degree to bring the 12
o'clock mark to the left side.
6. Bring the object half the distance to the center by
adjusting the reticle adjustment set screws using a
1.5mm hex key. Keep in mind that the image in the
finder is inverted. Loose one screw first, then
tighten the other screw(s). Only loose/tighten one
screw and small turns at a time to avoid the reticle
lost its position. It may take a few minutes to get
familiar with the screws that move the polar scope
in the appropriate direction. PLEASE do not over
tighten the setting screws (you'll break the reticle
holder or reticle).
7. Adjust the AZ base in altitude and azimuth to center
the object.
8. Rotate the mount 180° to bring the 12 o'clock mark
back to the right side. If you are lucky enough, the
object will stay at the center of the polar scope.
Otherwise, repeat Steps 4 ‐ 6 to further move the
object to the center.