Orion ATLAS EQ-G Instruction Manual

19
The Atlas EQ-G will emit a “beep” sound and display “Record
completed” when the training time is up. Press any button to
exit from the PEC Training upon completion.
Play Back the PEC Record
PEC tracking can be activated under the Setup menu or by
pressing the Setup quick reference button when needed. In
the Setup menu, choose “Set Tracking”, then “PEC + Sidereal”.
The Atlas EQ-G will play back the corrections you made dur-
ing the PEC training cycle and start tracking with periodic error
compensated.
Note: The Atlas EQ-G will continue to track in the PEC +
sidereal mode until another tracking mode is selected. If
the power is turned off while the Atlas EQ-G is in the PEC +
sidereal mode, the hand controller loses synchronization
with the R.A. worm gear and the PEC training will have to
be repeated when the power is turned back on. To avoid
this, be sure to return the telescope to its home position
by selecting “Park Scope” under “Utility Functions” before
turning off the power.
Appendix C: RS-232
Connection
The Atlas EQ-G hand controller must be set to RS-232 mode
in order to establish an interface connection with a PC. Under
the UTILITIES menu, select RS232 and press ENTER to ini-
tiate the computer interface mode. The Atlas EQ-G will now
communicate with the PC at a rate of 9600 bits/sec, no parity
and stop bit. All angles are communicated with 16 bit num-
bers.
Initialization
1. PC sends one byte ( 63 = ASCII “?”) to check wheteher the
Atlas EQ-G is ready.
2. The Atlas EQ-G responds with one byte (35 = ASCII “#”)
when the Atlas EQ-G is ready to respond.
Note: All INITIALIZATION steps are recommended but not
necessary
GoTo R.A.-DEC positions
1. NITIALIZATION
2. PC sends (82 = ASCII “R”)
3. PC sends the R.A. high byte, R.A. low byte, DEC high byte,
DEC low byte.
4. When the scope is finished slewing, it will display a “@” on
the hand controller.
GoTo Alt-Az positions
1. INITIALIZATION
2. PC sends (65 = ASCII “A”)
3. PC sends the Azm high byte, Azm low byte, Alt high byte,
Alt low byte.
4. When the scope is finished slewing, it will display a “@” on
the hand controller.
Get R.A.-DEC positions
1. INITIALIZATION
2. PC sends (69 = ASCII “E”)
3. The Atlas EQ-G sends the R.A. high byte, R.A. low byte,
DEC high byte, DEC low byte.
Get Alt-Az positions
1. INITIALIZATION
2. PC sends (90 = ASCII “Z”)
3. The Atlas EQ-G sends the Azm high byte, Azm low byte,
Alt high byte, Alt low byte.

Orion ATLAS EQ-G Specifications

General

Brand	Orion
Model	ATLAS EQ-G
Category	Telescope
Language	English