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lbaops:tidnotes:soe [2015/12/18 16:39] (current)
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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[at]csiro.au
 +
 +
  
lbaops/tidnotes/soe.txt · Last modified: 2015/12/18 16:39 (external edit)