
3
1. Overview
PoleMasterTM - a high precision, easy to use
electric polar scope.
Achieving a high precision polar alignment is
not an easy feat. You may spend tens of
minutes, if not hours, to have a good polar
alignment. After you get everything ready and
begin taking exposure, you bumped the mount,
and you have to restart from the beginning. An
iOptron’s Center-balanced Equatorial Mount
(CEM), such as CEM25 and CEM60, which
equipped with an all time accessible polar
scope, will allow you to make a quick and
precise polar alignment in a few minutes.
However, you still need to bend yourself, or
knee down on the ground to perform the polar
alignment
The most straight forward way for polar
alignment is just to find the true north point and
match its position with the rotation center of
your R.A. axis. The PoleMasterTM electronic
polar scope employs this idea. This device can
be installed on front of the R.A. axis. It use a
highly sensitivity camera to capture the image
of northern sky. The sensitivity is much higher
than the naked eye, so it can see not only the
Polaris but also those faint stars nearby.
Based on the locations of these stars, it can
calculate the position of the true position of
North Pole. With some sophisticated methods
the PoleMaster can also detect the rotation
center of the R.A. axis. It will mark the two
points on the computer screen, one is the R.A.
rotation center, the other is the virtual polar
point. Adjust the mount and let them overlap
then the pole is well aligned.
PoleMasterTM electronic polar scope provides
a quick and easy solution. It gives you a direct
and simple way to align with the pole. Within
two minutes you could obtain a very high polar
alignment precision up to 30 arcsec.
Features:
Fast, easy and comfortable
High precision, up to 30 arcsec
Easy to find the Polaris with a large
FOV
Compatible to variety of equatorial
mount with a proper adapter
Pole Monitor/align at any time.
2. Electronic Polar Scope
Assembly
2.1. Parts List
Parts Included:
PoleMasterTM Electronic Polar Scope;
Mini USB cable;
1mm hex wrench;
And ONE of following:
o CEM60 mounting adapter (for
CEM60/CEM60EC, P/N #3338-060),
OR
o iEQ30/45 mounting adapter (for
iEQ30/iEQ45/iEQ30Pro/iEQ45Pro, P/N
#3338-034),
OR
o ZEQ25 mounting adapter and 5mm hex
wrench (for for
CEM25/CEM25EC/ZEQ25, P/N #3338-
025)
Online Contents:
PoleMasterTM camera driver
PoleMasterTM polar alignment software
This Instruction Manual