Instructions for project 09B-041. See also Ingrid's ASP/GASP instructions. These assume some basic familiarity with GBT pulsar observing. Old 07A-087 instructions are here, but don't use them anymore!
Start up VNC, astrid, cleo and talk-n-draw in the usual way. Some more detailed instructions on how to do this appear here. Note that the current project ID is 09B-041.
Open up several gasp@gasp0 xterms (for GASP) and several beef xterms (for GUPPI).
Open up the Converter Rack page in CLEO.
Run either the astrid block
Setup_800, as appropriate for the day's observing
Test_cal scheduling block to use the correct
reciever, and pick the appropriate starting source (0218+4232 if it's
up, otherwise 0613-0200).
Observe_loop block to use the correct
GUPPI: Follow the instructions here
to set the input/output levels correctly. See the section labelling
"Setting the Levels for GUPPI". The
Test_cal block can be
used to slew to the first source and take a test cal scan. Once the
converter module attenuators are set based on
guppi_adc_hist recommendations, it is unlikely the scales
will need to be changed.
GASP: Run "
setif GBT" on gasp0. Check GASP
signal levels by logging into cpci from gasp0 (
ssh cpci -l
root), then running
rms. Input power can be
cpci, or by changing the attenuator values for Converter Modules 11 and
15 in CLEO.
Run the astrid block
Observe_loop. Note that you first
need to uncomment the correct reciever at the top of the script,
depending on the band in use. This will automatically run through our
list of sources (the schedule is in
~pdemores/sched/ltt_astrid.cat), taking cal and pulsar
scans with both backends. Assuming everything works, no further action
should be needed until the end of the session.
stat_msg on gasp0 to see GASP status
messages. This can be left running throughout the session. To see the
real-time folded profile display, run
stat_asp on gasp0 as
usual. This should only be run while data is being taken (after the
"Start MJD = ..." message) and will exit automatically when the current
pulsar is finished. Data files are saved in
guppi_status as usual to see the
current GUPPI settings.
guppi_monitor can be run at any
time during observing to see the current bandpass. "
/tmp/guppi_daq_server.log" will show the output of GUPPI as
it is running. Data files will be saved in
the usual location depending on your username, project id, etc, and can
be examined/viewed with psrchive commands (vap, pav, etc).
At the end of the session, press "Abort" in astrid to stop the observing script and GUPPI, and log out of astrid as ususal. GASP still need to be stopped manually:
stop_asp on gasp0 and also