Telescope
    Telescope Driver Interface v1.0 zip file or Compiled HTML Help file  
    Telescope Driver Interface v2.0 (1/19/2003)

Focuser
    ASCOM Focuser Interface
    Variant used in the HRPO TCS Driver v0.5

Dome
    Proposed standard v0.3 and used in the HRPO TCS Driver v0.5
    Proposed standard v0.4 as of 06/21/03 5:30 pm CDT 
    Proposed standard v0.5 as of 06/22/03 11:00 am CDT 
    Proposed standard v0.6 as of 06/23/03 9:00 pm CDT 
    Proposed standard v0.7 as of 06/24/03 9:30 pm CDT 

CCD Camera
    CCD Camera Standard 2/5/2003

Filter Wheel
    Filter Wheel Standard 2/5/2003

Instrument Selector
    No standard yet proposed

Power Control
    No standard yet proposed

Video Camera
    No standard yet proposed

Alarms
    No standard yet proposed