  COVER INFORMATION 

 Station:    GBT_VLBA  (Code Gb ) 
 Experiment: test of NRAO RDBE/DDC + EVN for Gb/s (C-band)
 Exp. Code:  F13C4   


Schedule Version:       1.00
Processed by SCHED version:  11.00  Release of Feb. 15, 2013

PI:       Bob Campbell

Address:  JIVE
          Oude Hoogeveensedijk 4
          7991PD  Dwingeloo
 

Phone:    +31 521 596-534
EMAIL:    campbell@jive.nl
Fax:
Phone during observation: +31 521 596-534

Observing mode:

Notes:
 
 
 

Schedule for GBT_VLBA  (Code Gb )                                   Page   2
               test of NRAO RDBE/DDC + EVN for Gb/s (C-band)
  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
----------------------------------------------------------------------------------------

 --- Tue  28 May 2013   Day 148 ---

 Next scan frequencies:  4931.75  4931.75  4996.25  4996.25
 Next BBC frequencies:    704.25   704.25   639.75   639.75
 Next scan bandwidths:     64.00    64.00    64.00    64.00

10 00 00  J2005+7752   21 05 04  50.0  -4.8  1.0     161.6     0        0   10 00 00
10 12 00  =2007+777    21 17 06  49.8  -5.8  1.2     158.0   720       92   10 00 01

10 12 26  J2005+7752   21 17 32  49.8  -5.8  1.2     157.8     6       92   10 12 26
10 14 06  =2007+777    21 19 13  49.8  -5.9  1.2     157.3   100      105   10 12 27

10 14 26  J2005+7752   21 19 33  49.8  -5.9  1.2     157.2     0      105   10 14 26
10 19 06  =2007+777    21 24 13  49.7  -6.3  1.3     155.8   280      141   10 14 27

10 19 26  J2005+7752   21 24 34  49.6  -6.3  1.3     155.7     0      141   10 19 26
10 24 06  =2007+777    21 29 14  49.5  -6.7  1.4     154.3   280      177   10 19 27

10 24 26  J2005+7752   21 29 34  49.5  -6.7  1.4     154.2     0      177   10 24 26
10 29 06  =2007+777    21 34 15  49.4  -7.0  1.5     152.8   280      213   10 24 27

10 29 26  J2005+7752   21 34 35  49.4  -7.0  1.5     152.7     0      213   10 29 26
10 34 06  =2007+777    21 39 16  49.3  -7.4  1.6     151.3   280      249   10 29 27

 Next scan frequencies:  4963.75  4963.75  4996.25  4996.25
 Next BBC frequencies:    672.25   672.25   639.75   639.75
 Next scan bandwidths:     32.00    32.00    32.00    32.00

10 37 06  J2005+7752   21 42 16  49.2  -7.6  1.6     150.4   159      249   10 37 06
10 38 46  =2007+777    21 43 57  49.2  -7.7  1.6     149.9   100      255   10 37 31

10 39 06  J2005+7752   21 44 17  49.2  -7.7  1.7     149.8     0      255   10 39 06
10 43 46  =2007+777    21 48 58  49.0  -8.0  1.7     148.4   280      273   10 39 07

10 44 06  J2005+7752   21 49 18  49.0  -8.1  1.7     148.3     0      273   10 44 06
10 48 46  =2007+777    21 53 58  48.9  -8.4  1.8     147.0   280      291   10 44 07

10 49 06  J2005+7752   21 54 18  48.9  -8.4  1.8     146.9     0      291   10 49 06
10 53 46  =2007+777    21 58 59  48.8  -8.7  1.9     145.5   280      309   10 49 07

10 54 06  J2005+7752   21 59 19  48.8  -8.7  1.9     145.4     0      309   10 54 06
10 58 46  =2007+777    22 04 00  48.6  -9.0  2.0     144.0   280      327   10 54 07


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


 ======== Setup file: CG.evn.rdbeddc
   Matching groups in ./freq.sess213rdbe.dat:
     gbt6cmc         LO1=7.868, LO2=12.732, LO3=10.5

   Setup group:   11         Station: GBT_VLBA          Total bit rate:  1024
   Format: MARK5B            Bits per sample: 2         Sample rate:128.000
   Number of channels:  4    DBE type: RDBE_DDC         Speedup factor:   1.00

   Disk used to record data.

   1st LO=   5636.00   5636.00   5636.00   5636.00
   Net SB=         U         U         U         U
   IF SB =         L         L         L         L
   Pol.  =      RCP       LCP       RCP       LCP 
   BBC   =         1         2         3         4
   BBC SB=         L         L         L         L
   IF    =        A         C         A         C 

  The following frequency sets based on these setups were used.

   Frequency Set:  13  Setup file default.
   LO sum=   4931.75  4931.75  4996.25  4996.25
   BBC fr=    704.25   704.25   639.75   639.75
   Bandwd=     64.00    64.00    64.00    64.00
    Matching frequency sets:  13

   Track assignments are: 
    track1=   2,  4,  6,  8
    barrel=roll_off 


 ======== Setup file: C5.evn.rdbeddc
   Matching groups in ./freq.sess213rdbe.dat:
     gbt6cmc         LO1=7.868, LO2=12.732, LO3=10.5

   Setup group:   35         Station: GBT_VLBA          Total bit rate:   512
   Format: MARK5B            Bits per sample: 2         Sample rate: 64.000
   Number of channels:  4    DBE type: RDBE_DDC         Speedup factor:   1.00

   Disk used to record data.

   1st LO=   5636.00   5636.00   5636.00   5636.00
   Net SB=         U         U         U         U
   IF SB =         L         L         L         L
   Pol.  =      RCP       LCP       RCP       LCP 
   BBC   =         1         2         3         4
   BBC SB=         L         L         L         L
   IF    =        A         C         A         C 

  The following frequency sets based on these setups were used.

   Frequency Set:  37  Setup file default.
   LO sum=   4963.75  4963.75  4996.25  4996.25
   BBC fr=    672.25   672.25   639.75   639.75
   Bandwd=     32.00    32.00    32.00    32.00
    Matching frequency sets:  37

   Track assignments are: 
    track1=   2,  4,  6,  8
    barrel=roll_off 

 POSITIONS OF SOURCES USED IN RECORDING SCANS

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

 * J2005+7752        20 07 20.430170   * 20 05 30.998498     20 05 05.274132       0.48
   2007+777          77 43 58.12300    * 77 52 43.24753      77 54 54.97866        0.10
   J2005+77          /aps3/sched11.0/catalogs/sources.vlba
                     rfc_2012b Petrov, 2012, unpublished 16337 observations



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
  J2005+7752 CG.evn.rdbeddc        1 3 13 14 15 16 17 18 19 20 +     0.539   144.124
             C5.evn.rdbeddc        26 27 37 38 39 40 41 42 43  +     0.339    93.524


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) 
   J2005+7752          75.6

  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 

