4.2.1
The Autoguider Port.............................................................................. 34
4.2.2
Manual Guiding..................................................................................... 35
4.2.3
Connecting an Autoguider to an Older Gemini .................................... 35
4.2.4
Connecting an Autoguider to a Newer Gemini..................................... 36
4.2.5
Software Guiding .................................................................................. 36
4.3
Periodic Error Control (PEC)........................................................................ 36
4.3.1
What is Periodic Error? ......................................................................... 36
4.3.2
The PEC Submenu ................................................................................ 37
4.4
Other Functions ............................................................................................. 41
5
Gemini Command Menu Reference ...................................................................... 42
5.1
The Main Menu............................................................................................. 42
5.2
Startup Mode Menu....................................................................................... 43
5.2.1
Cold Start............................................................................................... 43
5.3
Menu Reference ............................................................................................ 43
5.3.1
Align Telescope..................................................................................... 44
5.3.2
Object Database..................................................................................... 46
5.3.3
Show Information.................................................................................. 50
5.3.4
GoTo
5.3.5
Guide
AE
5.3.6
RA/DEC Coordnt. ................................................................................. 51
5.3.7
Identify .................................................................................................. 52
5.3.8
Object Search ........................................................................................ 52
5.3.9
Show Date/Time.................................................................................... 53
5.3.10
Setup...................................................................................................... 54
5.4
QuickMenu.................................................................................................... 63
5.4.1
Focusing ................................................................................................ 63
5.4.2
Set Centering Speed .............................................................................. 64
5.4.3
Set Visual/Photo Modes........................................................................ 64
5.4.4
Park Mount............................................................................................ 64
5.5
Cold Start Scrolling Menu............................................................................. 64
6
Serial Communication ............................................................................................ 65
6.1
RS 232 Interface............................................................................................ 65
6.1.1
Pinout and Wiring ................................................................................. 65
6.1.2
Settings .................................................................................................. 67
6.1.3
Troubleshooting .................................................................................... 67
6.2
Serial Command Sets .................................................................................... 67
6.2.1
Meade
LX200 Commands ................................................................. 67
6.2.2
Gemini Native Commands .................................................................... 68
6.3
Connecting a GPS Receiver .......................................................................... 68
6.4
Using Planetarium Programs......................................................................... 69
6.4.1
Telescope Driver ................................................................................... 69
6.4.2
Communication Port Access ................................................................. 69
6.4.3
Coordinate Epoch.................................................................................. 69
6.4.4
Coordinate Precision ............................................................................. 70
6.5
Using Control Programs................................................................................ 70
6.5.1
Gemini Control Center GCC.............................................................. 70
Gemini Users Manual
ii
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