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lbaops:tidnotes:soe

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SOE\

Before the observations, email the operators with a brief description of what you will be using the time for and a list of requirements, for example:\

  • The band to be used (L, S, X or K)\
  • The number of receivers needed in the link (only for S or X-band observations)\
  • The starting RA and Dec in decimal degrees\
  • Things to watch out for during the track\
  • Things to do at the end.\

Also say if you are going to be there.\ \ Here's an example:\ \ Hi everyone,\ \ Here's the SOE for tomorrow's DSS43 GBRA track. Dave Jauncey and I will be at CDSCC \ for the start of the track and at least the first few hours.\ \ Regards,\ Jim\ \ SOE for GBRA track on day 320 0740 → 1805 Z\ ——————————————–\ \ Experiment: Pulsar astrometry\ \ L-band VLBI observations with the Australian Long Baseline Array:\ ATCA, Parkes, Mopra, Hobart, Ceduna, DSS-43\ \ Recorder: Disk-based LBA recorder, data written to Apple Xraid at 256\ Mbps\ \ \ \ 1. Startup\ \ At the start of the track, please build a link with DSS-43 and two\ receivers. Spacecraft 50, pass 99.\ \ In the NMC:CTRL Connection Control window:\

 ap d trk (to bring up the track display)\

configure for X-band, Siderial, AC2, SRC tracking\ Pointing models:\

3xpsk.ac2\
3xcsg.sem\

Initial RA 291.31788\

      Dec  -29.23116\

\ Start the following connection block:\

connection blocks -> APCcontrol\

\ Start the E-log TDN\ \ Receicer setup:\

us d xmap\

configure signal path for dual polarisation\ dichroic stowed\ \ The antenna will be controlled through the PCFS. To bring up the PCFS\ display as well as the DAS sampler levels display and a plot of\ power-meter levels. In a terminal window type:\ \

ssh ops@pcfs42\
(give the usual ops password)\
vncviewer -shared pcfs42:1\
(give the usual ops password)\

\ This brings up a shared VNC display window that can be viewed from the\ RA lab too. Check that the DAS levels are in range and adjust\ attenuators at the block-0 rack if necessary.\ \ In the oprin window within VNC, type:\ \

schedule=v190eti\

\ The schedule will start and the antenna will be commanded to the first\ target.\ \ Please set up the two DCCs (one for each polarisation) to record SNT\ through a modulated 0.5 K diode, swithing at 20 Hz and logging every\ 30 sec.\ \ The recorder can be controlled from the PC in front of the block-0\ rack. I'll start it and it should continue to run without\ intervention.\ \ 2. Summary of the observations\ \ \ 0800 - 0900 UT: Network-wide fringe-check\ 0900 - 1735 UT: Main observations (summary at the end)\ \ \ 3. During the observations\ \ Please make note of any unusual events in the E-log, e.g. bad weather,\ high winds, tracking problems\ \ Keep an eye on the schedule above and make sure the antenna moves to the\ positions commanded.\ \ Please make sure the DAS levels stay within range (they should) and\ adjust attenuation is needed.\ \ About every 30 mins, check the terminal in front of the block-0 rack\ to make sure the recorder is still running. You should see the “Last\ block” value increase every 10 sec and the missed 1 PPS value should\ stay at zero. The Apple Xraid should also show activity. If not,\ please call me.\ \ 4. After the observations.\ \ At 17:35, please send the antenna to stow and in the PCFS oprin\ window, type:\ \

      terminate\

\ The VNC window can then be closed.\ \ Please email the E-log to me at Jim.Lovell@csiro.au\ \ \ Jim Lovell\ mobile: 0412127364\ home: 62875527\

lbaops/tidnotes/soe.1173837660.txt.gz · Last modified: 2015/12/18 16:39 (external edit)