Gemini Users Manual 6
1.3.6 Redesigned Quick Menu selection
To accelerate the Quick Menu access and to offer more selections, the Quick Menu
feature was redesigned.
1.3.7 Parking the OTA
The telescope can be parked at any "Home Position" by either the hand controller or
serial control. The home position defaults to the CWD (Counterweight Down) position.
Additional commands have been added to the QuickMenu to provide additional parking
options and to stop tracking.
1.3.8 More Alignment Stars
The number of Alignment Stars has been extended to 49. Especially more southern
hemisphere objects are now included. The coordinates of these stars are stored with sub-
arcsecond precision. Since some bright nearby stars have a significant proper motion
these motion values are also stored and included into the calculation to achieve highest
alignment accuracy.
1.3.9 Extended Serial Line Protocol
The Level 4 serial command set was extended not only to reflect the additions for new
and custom mounts, but also includes commands necessary for dome control and other
operations. :GA# and :GZ# commands are supported to query the azimuthal coordinates.
The hour angle the mount is pointing at can be obtained using the new :GH# command.
The side of the mount the OTA is can be asked for with :Gm while :GS# now delivers
the sidereal time. There are new precision guiding commands, observing sites can be
managed (stored, loaded, named), the firmware version information was extended and
more. Meridian flips can be initiated by the new :Mf# and :MM# commands.
1.3.10 Extended Identify interface
The interface to the Identify function within Gemini was extended to remember the
results of the latest Identify run. Now the user can decide to use
• "New Selection" to do another Identify run,
• "Previous objects" to observe one of the 10 objects found by the latest run,
• "Continous Ident" to have the Identify routine running continously in the
background while the telescope is slewed manually or commanded over the serial
line, always displaying name and distance of the nearest object matching the
search criteria.
1.3.11 Extended Safety Limits Handling
The physical positions of the Safety Limits are automatically derived from the mount
settings. For Losmandy mounts, they default to 114 degrees when the telescope is on the
east side of the mount and to 123 degrees on the west side, with respect to the startup
(CWD) position. To avoid accidentally setting the safety limits, another submenu item
"Confirm to Set" was added as a submenu of "Setup→Mount Parameters→Set Safety
Limits".
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