Starting with Level 3 version 1.01, you are able to change the Mount Type immediately 
after a Cold Start.  Refer to section 2.3.2.1 Cold Start Setup Options for an explanation of 
how this is done. 
Use the "Mount Type" menu item to select one of the telescope mounts listed above.  Be 
sure to restart the Gemini after changing the mount type.   
5.3.10.2.6  Set Safety Limit 
The nature of a German Equatorial Mount is that while it will never make a complete turn 
in RA, at the extreme ends of its movement, the optical tube assembly (OTA) can collide 
with the tripod legs or other equipment, causing damage.  Gemini has factory set default 
limits as to how far the mount can turn to the east and to the west.  These limits were 
established with the G 11 mount in mind, but without knowing which OTA will be 
mounted, and the accessory equipment that may be attached. 
Gemini provides a means, via this menu item, to change the pre set safety limits.  First of 
all, in order to be protected by Gemini's safety limits or to change them, you have to start 
up the system in the CWD position.  To narrow the previously set limits, merely slew to 
the position you want to set as the new limit and execute "Setup
Mount 
Parameters
Set Safety Limit."  Extending the previously set limits involves a bit more 
work, but is not difficult.  Slew toward the old limit you wish to extend.  About 10 
degrees before you reach the limit, the speed softly ramps down until the motor stops and 
a buzzer sounds (Now you are outside the safety range and the buzzer won't stop until 
you go back inside or set a new limit with this menu item).  As before, move to the 
position you want to set as the new safety limit, and execute "Setup
Mount 
Parameters
Set Safety Limit." 
IMPORTANT NOTICE:
  The limits are stored in CMOS SRAM.  Whenever the 
"CMOS reset" message is displayed during startup, all values are reset to the factory 
default.  If you need different limits to be set, you must set them again. 
5.3.10.2.7  Set Home Posit. (Set Home Position) 
This menu item allows you to set a Home Position for the telescope that is different from 
its Startup Position default.  This is the position to which the telescope will slew when 
"Park Mount!" is executed from the "QuickMenu" (see this Chapter, section 5.4) 
The "Park Mount!" selection is useful for returning the telescope to a pre determined 
Home Position.  If not expressly changed, the Home Position defaults to the Startup 
Position. 
5.3.10.3  Encoder 
  
EncRes RA
  
EncRes DEC
  
Test Encoder
  
Ignore Encoder
  
Use Encoder
Gemini Users Manual 
5  
9






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