Orion Sirius EQ?G, Manual, Page: 10 / 28

10
In order to set the guiding speed of your Sirius EQ-G, use the
following button combinations:
• 2x sidereal rate: Hold the
Fast
button, then press
the Up directional button.
• 1.75x sidereal rate: Hold the
Fast
button, then press
the Left directional button.
• 1.5x sidereal rate: Hold the
Fast
button, then press
the Right directional button.
• 1.25x sidereal rate: Hold the
Fast
button, then press
the Down directional button.
reversing the Directional Buttons
Celestial objects appear to move through the sky differently
when viewed through telescopes and/or accessories of dif-
ferent designs. For example, if an object viewed through a
refractor appears to migrate towards the left-hand side of an
eyepiece’s field of view, it will appear to migrate towards the
right-hand side of an eyepiece’s field of view in a
reflector
telescope.
In order to make viewing and tracking objects convenient,
regardless of telescope design, the dual-axis controller fea-
tures a “reverse” function which reverses the direction of the
hand controller’s directional buttons. This way you can match
the directional button to the way the object actually moves in
the telescope eyepiece.
To reverse the direction of the
Left
and
Right
directional but-
tons, press and hold the Slow speed button then press the
Left
directional button. To reverse the direction of the
Up
and
Down directional buttons, press and hold the Slow button
then press the
Up
directional button.
Once you have reversed the directional buttons, the dual-axis
controller will save the reversed settings until it they are man-
ually changed again. Turning the power off will not affect the
directional button setting last entered.
northern or southern Hemisphere operation
The dual-axis hand controller is capable of operating in either
Northern or Southern Hemisphere viewing locations. The sys-
tem is set up for Northern Hemisphere locations by default, so
if you are viewing from a Northern Hemisphere location, it is
not necessary to make any setting changes.
For the dual-axis controller to properly track celestial objects
in the Southern Hemisphere, press and hold the
Down
direc-
tional button and then press the Set button while powering
on the mount. Release the
Set
button after the mount has
successfully powered on and the Guide button begins flash-
ing. The controller will now operate properly in the Southern
Hemisphere. You can switch back to Northern Hemisphere
mode by using the same button combination. As long as the
controller is operating in Southern Hemisphere mode, the
Set
button will illuminate.
Power conservation
In the interest of conserving the amount of power drawn by the
Sirius EQ-G mount, the Dec. motor will enter a “sleep” mode
if left idle for a period of 15 seconds. In “sleep” mode, the Dec.
motor stops completely and the amount of used power drops
by about 40%. To reactivate the Dec. motor, press the
Up
or
Down directional button.
upgrading your sirius EQ‑G
While the dual-axis hand controller provides many useful
functions such as celestial object tracking and motorized
motion control, there is a GoTo hand controller for the Sirius
EQ-G available from Orion. The features and functions of the
GoTo hand controller are explained in the following section. If
you are interested in upgrading your Sirius EQ-G to a GoTo
system, call our Customer Service department at 800-676-
1343 or visit our website at www.OrionTelescopes.com for
more information.
8. the sirius EQ‑G Goto
Hand controller
The Sirius EQ-G mount equipped with the GoTo hand control-
ler provide easy, computerized location of thousands of night
sky objects such as planets, nebulae, star clusters, galaxies,
and more for viewing through your telescope. The GoTo hand
controller and internal dual-axis motors allow you to automati-
cally point your telescope at a specific object, or tour the skies
with pushbutton simplicity. The user-friendly menu allows
automatic slewing to over 13,400 objects. Even inexperienced
astronomers will find themselves quickly mastering the vari-
ety of features the GoTo hand controller offers in just a few
observing sessions.
attaching the Goto Hand controller
The Sirius EQ-G GoTo hand controller comes with two cables;
one for usage with the Sirius EQ-G mount, while the other is
for use with the Atlas EQ-G mount. After installation, you will
have one of these cables left over. Feel free to discard this
cable, as it will not be needed.
The hand controller cable for the Sirius EQ-G has modular
connectors (RJ-45) on both ends. Plug the modular connector
on one end of the cable into the hand controller jack (Figure
10), and plug the modular connector on the other end of the
cable into the mount’s controller jack (Figure 11). Push the
connectors into the jacks until they click into place.