  COVER INFORMATION 

 Station:    GBT_VLBA  (Code Gb ) 
 Experiment: test of NRAO RDBE/DDC + EVN for Gb/s (L-band)
 Exp. Code:  F13L3   


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 (L-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
----------------------------------------------------------------------------------------

 --- Fri   7 Jun 2013   Day 158 ---

 Next scan frequencies:  1594.25  1594.25  1658.25  1658.25
 Next BBC frequencies:    805.75   805.75   741.75   741.75
 Next scan bandwidths:     64.00    64.00    64.00    64.00

09 00 00  J2005+7752   20 44 20  50.3  -3.2  0.7     167.9     0        0   09 00 00
09 12 00  =2007+777    20 56 22  50.2  -4.2  0.9     164.3   720       92   09 00 01

09 12 26  J2005+7752   20 56 48  50.1  -4.2  0.9     164.1     6       92   09 12 26
09 14 06  =2007+777    20 58 28  50.1  -4.3  0.9     163.6   100      105   09 12 27

09 14 26  J2005+7752   20 58 48  50.1  -4.3  0.9     163.5     0      105   09 14 26
09 19 06  =2007+777    21 03 29  50.0  -4.7  1.0     162.1   280      141   09 14 27

09 19 26  J2005+7752   21 03 49  50.0  -4.7  1.0     162.0     0      141   09 19 26
09 24 06  =2007+777    21 08 30  50.0  -5.1  1.1     160.6   280      177   09 19 27

09 24 26  J2005+7752   21 08 50  50.0  -5.1  1.1     160.5     0      177   09 24 26
09 29 06  =2007+777    21 13 31  49.9  -5.5  1.1     159.1   280      213   09 24 27

09 29 26  J2005+7752   21 13 51  49.9  -5.5  1.1     159.0     0      213   09 29 26
09 34 06  =2007+777    21 18 32  49.8  -5.9  1.2     157.5   280      249   09 29 27

 Next scan frequencies:  1626.25  1626.25  1658.25  1658.25
 Next BBC frequencies:    773.75   773.75   741.75   741.75
 Next scan bandwidths:     32.00    32.00    32.00    32.00

09 37 06  J2005+7752   21 21 32  49.7  -6.1  1.3     156.6   159      249   09 37 06
09 38 46  =2007+777    21 23 12  49.7  -6.2  1.3     156.1   100      255   09 37 31

09 39 06  J2005+7752   21 23 32  49.7  -6.2  1.3     156.0     0      255   09 39 06
09 43 46  =2007+777    21 28 13  49.6  -6.6  1.4     154.6   280      273   09 39 07

09 44 06  J2005+7752   21 28 33  49.6  -6.6  1.4     154.5     0      273   09 44 06
09 48 46  =2007+777    21 33 14  49.4  -6.9  1.5     153.1   280      291   09 44 07

09 49 06  J2005+7752   21 33 34  49.4  -7.0  1.5     153.0     0      291   09 49 06
09 53 46  =2007+777    21 38 15  49.3  -7.3  1.6     151.6   280      309   09 49 07

09 54 06  J2005+7752   21 38 35  49.3  -7.3  1.6     151.5     0      309   09 54 06
09 58 46  =2007+777    21 43 16  49.2  -7.6  1.6     150.1   280      327   09 54 07


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


 ======== Setup file: LG.evn.rdbeddc
   Matching groups in ./freq.sess213rdbe.dat:
     g20cm_2         LO1=4.632, 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=   2400.00   2400.00   2400.00   2400.00
   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=   1594.25  1594.25  1658.25  1658.25
   BBC fr=    805.75   805.75   741.75   741.75
   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: L5.evn.rdbeddc
   Matching groups in ./freq.sess213rdbe.dat:
     g20cm_2         LO1=4.632, LO2=12.732, LO3=10.5

   Setup group:   34         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=   2400.00   2400.00   2400.00   2400.00
   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:  36  Setup file default.
   LO sum=   1626.25  1626.25  1658.25  1658.25
   BBC fr=    773.75   773.75   741.75   741.75
   Bandwd=     32.00    32.00    32.00    32.00
    Matching frequency sets:  36

   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 06.028304       0.48
   2007+777          77 43 58.12300    * 77 52 43.24753      77 54 57.60291        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 LG.evn.rdbeddc        1 3 13 14 15 16 17 18 19 20 +     0.539   131.929
             L5.evn.rdbeddc        25 26 36 37 38 39 40 41 42  +     0.339    85.730


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          75.9

  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 

