5
ASTRO-PHYSICS
GTO Keypad
Version 4.19.3
ABOUT THIS MANUAL
Historically, we have always included a keypad with all of our GTO equatorial mounts. Starting in October of 2015 we
began offering the Keypad as an optional purchase. Many users, especially those with personal observatories and those
whose principle interest is imaging, are now controlling our mounts via computer software and increasingly nd that the
Keypad has been relegated to storage. We made the decision to offer the Keypad as an option in order to accommodate
all our customers. The Keypad is a multi-function, portable, hand-held computer which gives one total freedom to set up in
the eld or at Star Parties without being tethered to the extra bulk of power-hungry computers. Using it is the best way to
truly be “portable”!
The Keypad is used with all the GoTo mounts that we have ever produced and can be used with any of the control boxes
(GTOCP1, GTOCP2, GTOCP3 and GTOCP4).
You should note that this manual is actually one component of a three document system. Since you chose to purchase the
optional Keypad, you have received this manual. The Keypad Manual applies to all mounts, detailing the keypad’s many
features and extensively explains its operation. A second manual is the GTO Servo Motor Drive System. Like the Keypad
Manual, the GTO Servo Manual is universal to all mounts that use the Astro-Physics GTO Servo Motor Drive System
with the GTOCP4 (and earlier CPx units) Servo Control Box. The nal manual is the Mount Manual and is specic to the
individual mount that is chosen.
As always, we highly recommend the Technical Support Section of our Web site for the latest information and for future
updated versions of this and other manuals.
A nal note and an apology to our friends in the southern hemisphere. Many of the instructions in this manual are written
entirely from the point of view of those of us in the northern hemisphere. Since descriptive terms like left and right are
meaningless without a dened point of reference, we tend to use east and west to avoid ambiguity. The east and west
sides of a German equatorial mount are, of course, reversed in the southern hemisphere. At one point, our thought was to
always use phrases like the following: “... on the east side (west side in the southern hemisphere) ...” This quickly became
cumbersome and made the text more difcult to read. For simplicity, we decided to leave many of the explanations in their
northern hemisphere framework. To our southern hemisphere friends: We appreciate you no less and apologize for this
unintended slight. We know, however, that you are all smart enough to make the necessary translation to “down under”
appropriate instructions. Thank you for your understanding.
Please RecoRd the Following inFoRmation FoR FutuRe ReFeRence
Keypad Serial Number: _____________________________________________
Purchase Date: _____________________________________________
User Name _____________________ Password ______________________
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