Prime Autoguider

To start or stop, type START-UP and SHUT-DOWN on the autoguider keyboard. Check N flow on start up. There will be a ball meter, at prime focus it is on the turntable diagonally opposite the autoguider head; at Cassegrain it is above the red arm CCD cryostat.

ICL Interface

 TPGDX n 		 Sets guide probe X position (n=0-110000
microns).

PGDY n 		 Sets guide probe Y position (n=0-20000
microns).

PGDXY m n 		 Sets guide probe X and Y position (m=0-110000
microns, n=0-20000 microns).

PGDFOC  n 		 Sets guide probe focus (n=0-14100 microns).

SETINT n 		 Sets integration time (n=50-50000 msec; typical
1-2s)

GSSEARCH 		 to find guide star and move guide probe

FIELD 		 takes exposures and finds guide star

FON 		 initiates `following' by autoguider
 [3mm]
AUTOGUIDER ON 		 tell T/S to initiate closed-loop autoguiding

AUTOGUIDER OFF 		 tell T/S to stop autoguiding
 [3mm]
GUISIZE n 		 Sets size of guiding box (default 30 pixels)

FOFF 		 terminates the autoguider `following'

Other commands available on the autoguider keyboard :

 TPRIME 		 selects the prime focus autoguider

SETINT  n 		 sets integration time for the field in millisecs

FIELD n  		does a full frame readout and searches for up to 
n stars.

GUIDE ON  		 to start guiding, averaging over i integrations

GUIDE OFF 		 to stop guiding

GUISIZE n 		 to change the size of the guiding box

>> and << 		 to rotate colour look-up table

+TAU and -TAU 		 to change horizontal scale of guide error display

+SCALE and -SCALE 		 similarly vertical scale
 [5mm]