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Next: Appendix D: Example DAS/ICS Up: No Title Previous: Appendix B: ICS commands

Appendix C: DAS commands

Here "t" stands for a time in seconds, and "n" stands for the number of exposures.

Bias and multiple bias frames
bias                     take a bias frame and save it, with OBSTYPE defined as BIAS
multbias "n"             make multiple exposures, all with OBSTYPE defined as BIAS

Normal exposures (all commands use similar arguments)
arc "t" "name"           take and save an exposure, with the OBSTYPE defined as ARC
dark                     take and save a dark frame, with OBSTYPE defined as DARK
flash                    take and save an exposure, with the OBSTYPE defined as FLASH
flat                     take and save an exposure, with the OBSTYPE defined as FLAT
run                      take and save an exposure, with the OBSTYPE defined as RUN
sky                      take and save an exposure, with the OBSTYPE defined as SKY 

Multiple exposure sequences (all commands use similar arguments)
multarc "n" "t" "name"   make multiple exposures, all with OBSTYPE defined as ARC
multdark                 make multiple exposures, all with OBSTYPE defined as DARK
multflash                make multiple exposures, all with OBSTYPE defined as FLASH
multflat                 make multiple exposures, all with OBSTYPE defined as FLAT
multrun                  make multiple exposures, all with OBSTYPE defined as RUN
multsky                  make multiple exposures, all with OBSTYPE defined as SKY 

Test exposures
glance "t"               take one exposure and leave in the glance file 
promote                  promote the glance file to a normal run
scratch "m" "t"          take one exposure and save it to a scratch file numbered "m"
promote "m"              promote a scratch file to a normal run

Changing image size 
bin "x" "y"              select binned readout of the detector
disable_win              suspend the effect of windowing on a CCD
enable_win               resume windowing after disable_win (q.v.)
window "window number" "xw" "yw" "xoff" "yoff"  
                         define a read-out window on a CCD 

Changing CCD speed 
clear_speed "type"       set the clear speed, to STANDARD to QUICK 
nonastro                 change the readout speed to NONASTRO
quick                    set the readout speed to QUICK
readout_speed "type"     change the read-put speed of the CCD
rspeed "type"            synonym of readout_speed
slow                     change the readout speed to SLOW
standard                 change the readout speed to STANDARD
turbo                    change the readout speed to TURBO

Interrupting an exposure (these have to be preceeded by Cntr-Z)
abort                         abort an observation, discarding and associated data
finish                        terminate an exposure immediately; saving the data
newtime "t"                   change the length of an exposure
pause                         suspend an exposure 
resume                        restart an exposure suspended by pause (q.v.)

Housekeeping 
cleanup                       get rid of system remains after SHUTDOWNOBSSYS
dasreset                      use this on lpss12 when having FOX problems;
                              see trouble shooting section. Follow with STARTOBSSYS
                              on lpss10.
obsdata "directory" "size"    define the FITS data directory,
                              and define approximate FITS file size in Mb
preflash "t"                  set the length of a CCD preflash
rtc_sync                      synchronize the real time clock on the CCD controller 
setup_ccd "name"              prepare CCD channel; part of STARTOBSSYS
shutdownobssys                kill the system
shutter ""                    move or unjam the shutter (arguments: open/close/unjam)
startobssys                   use to start up or when when a subtask has died




1999-11-12