Group 1 Instructions

**The following linux commands will be useful**
cd "path" - changes the directory to whatever you specify in "path"
ls - lists the contents of the current directory
**

Step 1) Log into linux and open a terminal

Step 2) type the following and hit enter when finished:
  ssh -AX -l rlynch tacoma.cv.nrao.edu

Step 3) Call me over to enter my password

Step 4) Type the following and hit enter when finished:
  cd /data1/rlynch/PSC/Group1

Step 5) Type ls and hit enter.  You should see three files ending in
  .fits.  These are the raw data from the telescope.

Step 6) Type the following command and hit enter when finished:
  spigot2filterbank -o PSC_J1737-08.fil spigot_54660_0001_000*.fits

Step 7) Type ls and hit enter.  You should now see a new file called
  PSC_J1737-08.fil

Step 8) Type the following command and hit enter:
  rfifind -o PSC_J1737-08 -blocks 64 PSC_J1737-08.fil

Step 9) Type ls and hit enter.  You should now see several new files
  that have "rfifind" in the name.  These are the information about
  RFI in our data.

Step 10) Type the following command and hit enter:
  gv PSC_J1737-0_rfifind.ps
  A window will pop showing the rfi in our observation

Step 11) Type the following command ALL ON ONE LINE and hit enter:
  prepsubband -o PSC_J1737-08 -lodm 55.2 -numdms 1 -dmstep 0.0 
  -mask PSC_J1737-08_rfifind.mask PSC_J1737-08.fil

Step 12) Type ls and hit enter.  You should now see a file ending
  in .dat.  This is the time series.

Step 13) Type the following command and hit enter:
  exploredat PSC_J1737-08_DM55.20.dat

Step 14) A window will pop up showing the time series.  I will
  give instructions on how to view this.

Step 15) Type the following command and hit enter:
  realfft PSC_J1737-08_DM55.20.dat

Step 16) Type ls and hit enter.  You should now see a file ending in
  .fft.  This is the fast Fourier transform of our time series.

Step 17) Type the following command and hit enter:
  explorefft PSC_J1737-08_DM55.20.fft

Step 18) A window will pop up showing the Fourier spectrum.  I will
  give instructions on how to view this.

Step 19) Type the following command ALL ON ONE LINE and hit enter:
  accelsearch -zaplist ../GBT350.zaplist -baryv 4.15228e-05 -numharm 16 
  -sigma 2.0 -zmax 0 -flo 2.0 PSC_J1737-08_DM55.20.fft

Step 20) Type ls and hit enter.  You will now see some files that contain
  the results of our search.

Step 21) Type the follow command and hit enter:
  less PSC_J1737-08_DM55.20_ACCEL_0

Step 22) You should now see the contents of the file.  The top few lines
  list the candidates found in this search.  The MSP should be the
  second candidate.

Step 23) Type the following command ALL ON ONE LINE and hit enter:
  prepfold -o PSC_J1737-08 -dm 55.2 -accelcand 2 
  -accelfile PSC_J1737-08_DM55.20_ACCEL_0.cand PSC_J1737-08.fil

Step 24) A prepfold plot should now pop up showing the MSP.