stored values return to their default settings, and a "CMOS reset" message is displayed on 

the Hand Controller.  "Setup" is used often, and contains the greatest number of 

submenus; it is therefore highly recommended that you commit the "Setup" menu to 

memory, and be thoroughly familiar with the submenus you most frequently use. 

5.3.10.1  Hand Controller 

Visual Mode: C S 

Photo Mode: G C 

All Speeds: G C S 

This menu item contains three modes for controlling the telescope with the Hand 

Controller.  The modes differ by the "Moving Speed"s each can access.  These speeds are 

"Centering" (C), "Slewing" (S), and "Guiding" (G). 

In "Visual Mode: C S," pressing one directional button of the Hand Controller moves the 

telescope at centering speed.  Pressing the opposite button while the first button remains 

depressed accelerates the telescope to slewing speed.  "Guiding" speed is not available in 

this mode because, when doing visual observations, it is usually not necessary to guide 

the telescope in order to keep objects sufficiently centered in the field of view. 

In "Photo Mode: G C," pressing one directional button of the Hand Controller moves the 

telescope at guiding speed.  Pressing the opposite button while the first button remains 

depressed, will change to 1/8 of centering speed to allow fine centering of the target, then 

after about 2 seconds speed will increase to   centering speed, then after another 2 

seconds   centering speed and finally to full centering speed.  Pressing the opposite 

button twice will change to full centering speed immediately.  During a guiding 

operation, accidentally accelerating to centering speed is undesirable.  To avoid this, you 

can guide via a Losmandy Standard Hand Controller plugged into Gemini 

s Autoguider 

port.  In this way, accidentally pressing an opposite button of the Hand Controller will 

not cause the telescope to speed up. 

In "All Speeds: G C S" mode, all three moving speeds are available.  Pressing one 

directional button of the Hand Controller moves the telescope at guiding speed.  Pressing 

the opposite button while the first button remains depressed accelerates the telescope to 

centering speed.  Pressing the opposite button again while the first button remains 

depressed accelerates the telescope to slewing speed. 

Executing any of the above choices returns Gemini to Telescope Control Mode. 

5.3.10.2  Mount Parameters 

Tracking Speed 

Moving Speeds 

TVC Value: 

PEC 

Mount Type 

Set Safety Limit 

Gemini Users Manual 

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