  COVER INFORMATION 

 Station:    GBT_VLBA  (Code Gb ) 
 Experiment: RadioAstron AGN polarization imaging
 Exp. Code:  gg081h  


Schedule Version:       1.00
Processed by SCHED version:  11.40  Release 11.4.  March 14, 2015

PI:       Jose L. Gomez

Address:  Instituto de Astrofisica de Andalucia-CSIC
          Glorieta de la Astronomia
          E-18008 Granada, Spain
 

Phone:    +79165452842
EMAIL:    jlgomez@iaa.es, alobanov@mpifr-bonn.mpg.de
Fax:
Phone during observation: +79165452842

Observing mode: K-band,Q-band, dual-pol

Notes:    K-band, Radioastron-compatible frequency setup
          P-CAL is ON
          Tsys is ON
          auto-level (AGC) is ON

Schedule for GBT_VLBA  (Code Gb )                                   Page   2
               RadioAstron AGN polarization imaging
  UP:  D => Below limits;  H => Below horizon mask;  W => still slewing at end;  blank => Up.
  Early: Seconds between end of slew and start.   Dwell: On source seconds. 
  Disk: GBytes recorded to this point.
  TPStart:  Recording start time.  Frequencies are LO sum (band edge).
  SYNC: Time correlator is expected to sync up.
----------------------------------------------------------------------------------------
Start UT  Source               Start / Stop                 Early    Disk   TPStart
Stop UT                  LST      EL    AZ   HA  UP   ParA  Dwell   GBytes    SYNC
----------------------------------------------------------------------------------------

 --- Thu   9 Mar 2017   Day  68 ---

 ---------- This is a 8-min scan for GBT to do POINTING ----------

 Next scan frequencies:  22220.00  22220.00  22252.00  22252.00  22284.00  22284.00  22316.00  22316.00
 Next BBC frequencies:     816.00    816.00    784.00    784.00    752.00    752.00    720.00    720.00
 Next scan bandwidths:      32.00     32.00     32.00     32.00     32.00     32.00     32.00     32.00

04 20 00  0851+202     10 08 51  65.8 225.8  1.2      36.7     0        0   Stopped 
04 28 00  ---          10 16 53  64.6 229.4  1.4      39.2   480        0           

 ---------- K-band VLBI scans. Ground-only segment 01: 0851+202 with VLBA ----------

04 30 00  0851+202     10 18 53  64.3 230.2  1.4      39.8    98        0   04 30 00
04 39 30  ---          10 28 25  62.8 234.0  1.5      42.4   570       73   04 30 01

04 40 00  0851+202     10 28 55  62.7 234.2  1.6      42.5     9       73   04 40 00
04 49 30  ---          10 38 26  61.2 237.6  1.7      44.8   570      147   04 40 01

04 50 00  0851+202     10 38 56  61.1 237.8  1.7      44.9     9      147   04 50 00
04 59 30  ---          10 48 28  59.5 240.9  1.9      46.8   570      220   04 50 01

05 00 00  0851+202     10 48 58  59.4 241.1  1.9      46.9     9      220   05 00 00
05 09 30  ---          10 58 30  57.8 244.0  2.0      48.5   570      294   05 00 01

 ---------- K-band VLBI scans. Space segment 01: 0851+202 with VLBA +RA ----------

05 10 00  0851+202     10 59 00  57.7 244.1  2.1      48.6     9      294   05 10 00
05 20 00  ---          11 09 01  55.9 246.9  2.2      50.1   600      371   05 10 01

05 20 30  0851+202     11 09 31  55.8 247.1  2.2      50.2     9      371   05 20 30
05 30 00  ---          11 19 03  54.1 249.5  2.4      51.4   570      444   05 20 31

05 30 30  0851+202     11 19 33  54.0 249.7  2.4      51.4     9      444   05 30 30
05 40 00  ---          11 29 05  52.2 252.0  2.6      52.4   570      518   05 30 31

05 40 30  0851+202     11 29 35  52.1 252.1  2.6      52.5     9      518   05 40 30
05 50 00  ---          11 39 06  50.3 254.2  2.7      53.4   570      591   05 40 31

05 50 30  0851+202     11 39 36  50.2 254.3  2.7      53.4     9      591   05 50 30
06 00 00  ---          11 49 08  48.4 256.4  2.9      54.1   570      665   05 50 31


SETUP FILE INFORMATION:
   NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings.


 ======== Setup file: ra1cm2.set
   Matching groups in ./gg081h_freq.dat:
     gbt1cm_a4       LO1=28.868, LO2=16.532, LO3=10.5

   Setup group:    1         Station: GBT_VLBA          Total bit rate:  1024
   Format: VDIF              Bits per sample: 2         Sample rate: 64.000
   Number of channels:  8    DBE type: RDBE_DDC         Speedup factor:   1.00

   Disk used to record data.

   1st LO=  23036.00  23036.00  23036.00  23036.00  23036.00  23036.00  23036.00  23036.00
   Net SB=         U         U         U         U         U         U         U         U
   IF SB =         L         L         L         L         L         L         L         L
   Pol.  =      RCP       LCP       RCP       LCP       RCP       LCP       RCP       LCP 
   BBC   =         1         2         3         4         5         6         7         8
   BBC SB=         L         L         L         L         L         L         L         L
   IF    =        B         D         B         D         B         D         B         D 

  The following frequency sets based on these setups were used.

   Frequency Set:   1  Setup file default.  Used with PCAL = 1MHz
   LO sum=   22220.00  22220.00  22252.00  22252.00  22284.00  22284.00  22316.00  22316.00
   BBC fr=     816.00    816.00    784.00    784.00    752.00    752.00    720.00    720.00
   Bandwd=      32.00     32.00     32.00     32.00     32.00     32.00     32.00     32.00
   VLBA legacy crd files using  4 channels based on RDBE channels:   3  4  5  6
   CRD fr=     776.01    776.01    744.01    744.01
   CRD bw=      16.00     16.00     16.00     16.00
    Matching frequency sets:   1

   Track assignments are: 
    track1=   1,  2,  3,  4,  5,  6,  7,  8
    barrel=roll_off 

 POSITIONS OF SOURCES USED IN RECORDING SCANS

   Source                         Source position (RA/Dec)                        Error
                        (B1950)             (J2000)             (Date)            (mas)

 * FAKERA            11 57 21.769299   * 12 00 00.000000     12 01 00.008570       0.00
                     85 16 41.77889    * 85 00 00.00000      84 54 13.42769        0.00
                     From catalog imbedded in main SCHED input file.
                     fake circumpolar target for a TS to look at

 * 0851+202          08 51 57.250618   * 08 54 48.874930     08 55 48.277757       0.00
   J0854+2006        20 17 58.41733    * 20 06 30.64078      20 02 24.58979        0.00
   OJ287             ./gg081h_sources.radioastron
                     AGN, rfc_2013d Petrov, 2013, unpublished 213710 observations, RA-AO3-04, RA-AO3-



SOURCE SCAN SUMMARY FOR SOURCES LISTED ABOVE

     Scan hours are for recording scans only. 
     Baseline hours are only counted for scans above horizon at both ends.
  Source       Setup file             Frequency sets                  Observing hours
                                   (duplicates not shown)              Scan  Baseline
  FAKERA     ra1cm2.set            12                                0.800     0.000
  0851+202   ra1cm2.set            1 2                               1.433    78.833


EFFECT OF SOLAR CORONA

  The solar corona can cause unstable phases for sources too close to the Sun.
  SCHED provides warnings at individual scans for distances less than 10 degrees.
  The distance from the Sun to each source in this schedule is:
    Source         Sun distance (deg) 
   FAKERA              99.4
   0851+202           141.8

  Barry Clark estimates from predictions by Ketan Desai of IPM scattering sizes 
  that the Sun will cause amplitude reductions on the  longest VLBA baselines 
  at a solar distance of 60deg F^(-0.6) where F is in GHz. 
  For common VLBI bands, this is: 
       327 MHz        117. deg 
       610 MHz         81. deg 
       1.6 GHz         45. deg 
       2.3 GHz         36. deg 
       5.0 GHz         23. deg 
       8.4 GHz         17. deg 
      15.0 GHz         12. deg 
      22.0 GHz          9. deg 
      43.0 GHz          6. deg 

