  COVER INFORMATION 

 Station:    HART      (Code Hh ) 
 Experiment: Studying the feasibility of high-precision VLBI astrometry on M60
 Exp. Code:  RSY12   


Schedule Version:       1.00
Processed by SCHED version:  11.60  Release 11.6; April 2020

PI:       Jun Yang

Address:  Onsala Space Observatory
          SE-439 92 Onsala
          Sweden
 

Phone:    +46 31 7725531
EMAIL:    jun.yang@chalmers.se
Fax:      +46 31 7725590
Phone during observation: +46 31 7725531

Observing mode: 2048-16-2

Notes:    2048 Mbps, 16x32 MHz, RCP & LCP, 2 bit sampling
          Short phase-referencing observations at 5 GHz
 
 

Schedule for HART      (Code Hh )                                   Page   2
               Studying the feasibility of high-precision VLBI astrometry on M60
  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  11 Mar 2025   Day  70 ---

 Next scan frequencies:  4830.49  4830.49  4830.49  4830.49  4894.49  4894.49  4894.49  4894.49
                         4958.49  4958.49  4958.49  4958.49  5022.49  5022.49  5022.49  5022.49
 Next BBC frequencies:    230.49   230.49   230.49   230.49   294.49   294.49   294.49   294.49
                          358.49   358.49   358.49   358.49   422.49   422.49   422.49   422.49
 Next scan bandwidths:     32.00    32.00    32.00    32.00    32.00    32.00    32.00    32.00
                           32.00    32.00    32.00    32.00    32.00    32.00    32.00    32.00

20 30 00  J1250+1343   09 39 45  28.9  55.6 -3.2       0.0     0        0   20 30 00
20 33 30  =1247+139    09 43 15  29.5  54.9 -3.1       0.0   210       54   20 30 01

20 34 30  B1239+1110   09 44 16  33.1  55.6 -3.0       0.0    27       54   20 34 30
20 35 30  ---          09 45 16  33.3  55.4 -3.0       0.0    60       70   20 34 31

20 35 55  M60          09 45 41  32.6  55.1 -3.0       0.0    -1       70   20 35 55
20 37 55  ---          09 47 41  33.0  54.7 -3.0       0.0   119      100   20 35 56

20 38 20  J124353      09 48 06  33.0  54.6 -3.0       0.0     3      100   20 38 20
20 39 30  ---          09 49 16  33.2  54.4 -2.9       0.0    70      119   20 38 21

20 39 55  M60          09 49 41  33.4  54.3 -2.9       0.0     3      119   20 39 55
20 41 55  ---          09 51 42  33.7  54.0 -2.9       0.0   120      149   20 39 56

20 42 20  J124353      09 52 07  33.7  53.8 -2.9       0.0     3      149   20 42 20
20 43 30  ---          09 53 17  33.9  53.6 -2.9       0.0    70      167   20 42 21

20 43 55  M60          09 53 42  34.1  53.6 -2.9       0.0     3      167   20 43 55
20 45 55  ---          09 55 42  34.5  53.2 -2.8       0.0   120      198   20 43 56

20 46 20  J124353      09 56 07  34.4  53.0 -2.8       0.0     3      198   20 46 20
20 47 30  ---          09 57 18  34.6  52.8 -2.8       0.0    70      216   20 46 21

20 47 55  M60          09 57 43  34.8  52.7 -2.8       0.0     3      216   20 47 55
20 49 55  ---          09 59 43  35.2  52.3 -2.8       0.0   120      247   20 47 56

20 50 20  J124353      10 00 08  35.1  52.2 -2.8       0.0     3      247   20 50 20
20 51 30  ---          10 01 18  35.3  52.0 -2.7       0.0    70      265   20 50 21

20 51 55  M60          10 01 43  35.5  51.9 -2.7       0.0     3      265   20 51 55
20 53 55  ---          10 03 44  35.9  51.5 -2.7       0.0   120      296   20 51 56

20 54 20  J1241+1141   10 04 09  36.2  50.9 -2.6       0.0     0      296   20 54 20
20 55 30  ---          10 05 19  36.4  50.6 -2.6       0.0    70      314   20 54 21

20 55 55  M60          10 05 44  36.2  51.1 -2.7       0.0     0      314   20 55 55
20 57 55  ---          10 07 44  36.6  50.6 -2.6       0.0   120      345   20 55 56
Schedule for HART      (Code Hh )                                   Page   3
               Studying the feasibility of high-precision VLBI astrometry on M60
  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  11 Mar 2025   Day  70 ---

20 58 20  J124353      10 08 09  36.5  50.5 -2.6       0.0     3      345   20 58 20
20 59 30  ---          10 09 20  36.8  50.3 -2.6       0.0    70      363   20 58 21

20 59 55  M60          10 09 45  36.9  50.2 -2.6       0.0     3      363   20 59 55
21 01 55  ---          10 11 45  37.3  49.8 -2.6       0.0   120      394   20 59 56

21 02 20  J124353      10 12 10  37.2  49.7 -2.6       0.0     3      394   21 02 20
21 03 30  ---          10 13 20  37.4  49.4 -2.5       0.0    70      412   21 02 21

21 03 55  M60          10 13 45  37.6  49.3 -2.5       0.0     3      412   21 03 55
21 05 55  ---          10 15 46  38.0  48.9 -2.5       0.0   120      443   21 03 56

21 06 20  J124353      10 16 11  37.9  48.8 -2.5       0.0     3      443   21 06 20
21 07 30  ---          10 17 21  38.1  48.5 -2.5       0.0    70      461   21 06 21

21 07 55  M60          10 17 46  38.3  48.4 -2.5       0.0     3      461   21 07 55
21 09 55  ---          10 19 46  38.6  48.0 -2.4       0.0   120      492   21 07 56

21 10 20  J124353      10 20 11  38.6  47.9 -2.4       0.0     3      492   21 10 20
21 11 30  ---          10 21 22  38.8  47.6 -2.4       0.0    70      510   21 10 21

21 11 55  M60          10 21 47  39.0  47.5 -2.4       0.0     3      510   21 11 55
21 13 55  ---          10 23 47  39.3  47.0 -2.4       0.0   120      541   21 11 56

21 14 20  J1241+1141   10 24 12  39.6  46.4 -2.3       0.0     0      541   21 14 20
21 15 30  ---          10 25 22  39.8  46.1 -2.3       0.0    70      559   21 14 21

21 15 55  M60          10 25 47  39.6  46.6 -2.3       0.0     0      559   21 15 55
21 17 55  ---          10 27 48  40.0  46.1 -2.3       0.0   120      590   21 15 56

21 18 20  J124353      10 28 13  39.9  46.0 -2.3       0.0     3      590   21 18 20
21 19 30  ---          10 29 23  40.1  45.7 -2.3       0.0    70      608   21 18 21

21 19 55  M60          10 29 48  40.3  45.6 -2.3       0.0     3      608   21 19 55
21 21 55  ---          10 31 48  40.6  45.1 -2.2       0.0   120      639   21 19 56

21 22 20  J124353      10 32 13  40.6  45.0 -2.2       0.0     3      639   21 22 20
21 23 30  ---          10 33 24  40.7  44.7 -2.2       0.0    70      657   21 22 21

21 23 55  M60          10 33 49  40.9  44.6 -2.2       0.0     3      657   21 23 55
21 25 55  ---          10 35 49  41.2  44.1 -2.2       0.0   120      688   21 23 56

21 26 20  J124353      10 36 14  41.2  44.0 -2.1       0.0     3      688   21 26 20
21 27 30  ---          10 37 24  41.4  43.7 -2.1       0.0    70      706   21 26 21
Schedule for HART      (Code Hh )                                   Page   4
               Studying the feasibility of high-precision VLBI astrometry on M60
  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  11 Mar 2025   Day  70 ---

21 27 55  M60          10 37 49  41.5  43.6 -2.1       0.0     3      706   21 27 55
21 29 55  ---          10 39 50  41.9  43.1 -2.1       0.0   120      737   21 27 56

21 30 20  J124353      10 40 15  41.8  43.0 -2.1       0.0     3      737   21 30 20
21 31 30  ---          10 41 25  42.0  42.7 -2.1       0.0    70      755   21 30 21

21 31 55  M60          10 41 50  42.2  42.6 -2.1       0.0     3      755   21 31 55
21 33 55  ---          10 43 50  42.5  42.1 -2.0       0.0   120      786   21 31 56

21 34 20  J1241+1141   10 44 15  42.7  41.3 -2.0       0.0     0      786   21 34 20
21 35 30  ---          10 45 26  42.9  41.0 -2.0       0.0    70      804   21 34 21

21 35 55  M60          10 45 51  42.8  41.5 -2.0       0.0     0      804   21 35 55
21 37 55  ---          10 47 51  43.1  41.0 -2.0       0.0   120      835   21 35 56

21 38 20  J124353      10 48 16  43.0  40.9 -1.9       0.0     3      835   21 38 20
21 39 30  ---          10 49 26  43.2  40.6 -1.9       0.0    70      853   21 38 21

21 39 55  M60          10 49 51  43.4  40.5 -1.9       0.0     3      853   21 39 55
21 41 55  ---          10 51 52  43.6  39.9 -1.9       0.0   120      884   21 39 56

21 42 20  J124353      10 52 17  43.6  39.8 -1.9       0.0     3      884   21 42 20
21 43 30  ---          10 53 27  43.8  39.5 -1.9       0.0    70      902   21 42 21

21 43 55  M60          10 53 52  43.9  39.4 -1.9       0.0     3      902   21 43 55
21 45 55  ---          10 55 52  44.2  38.8 -1.8       0.0   120      933   21 43 56

21 46 20  J124353      10 56 17  44.2  38.7 -1.8       0.0     3      933   21 46 20
21 47 30  ---          10 57 28  44.3  38.4 -1.8       0.0    70      951   21 46 21

21 47 55  M60          10 57 53  44.5  38.2 -1.8       0.0     3      951   21 47 55
21 49 55  ---          10 59 53  44.8  37.7 -1.8       0.0   120      982   21 47 56

21 50 20  J124353      11 00 18  44.7  37.6 -1.7       0.0     3      982   21 50 20
21 51 30  ---          11 01 28  44.9  37.2 -1.7       0.0    70     1000   21 50 21

21 51 55  M60          11 01 53  45.1  37.1 -1.7       0.0     3     1000   21 51 55
21 53 55  ---          11 03 54  45.3  36.5 -1.7       0.0   120     1031   21 51 56

21 54 20  J1241+1141   11 04 19  45.5  35.7 -1.6       0.0     0     1031   21 54 20
21 55 30  ---          11 05 29  45.7  35.4 -1.6       0.0    70     1049   21 54 21

21 55 55  M60          11 05 54  45.6  35.9 -1.7       0.0     0     1049   21 55 55
21 57 55  ---          11 07 54  45.9  35.3 -1.6       0.0   120     1080   21 55 56
Schedule for HART      (Code Hh )                                   Page   5
               Studying the feasibility of high-precision VLBI astrometry on M60
  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  11 Mar 2025   Day  70 ---

21 58 20  J124353      11 08 19  45.8  35.2 -1.6       0.0     3     1080   21 58 20
21 59 30  ---          11 09 29  46.0  34.9 -1.6       0.0    70     1098   21 58 21

21 59 55  M60          11 09 55  46.1  34.7 -1.6       0.0     3     1098   21 59 55
22 01 55  ---          11 11 55  46.4  34.1 -1.6       0.0   120     1128   21 59 56

22 02 20  J124353      11 12 20  46.3  34.0 -1.5       0.0     3     1128   22 02 20
22 03 30  ---          11 13 30  46.5  33.6 -1.5       0.0    70     1146   22 02 21

22 03 55  M60          11 13 55  46.6  33.5 -1.5       0.0     3     1146   22 03 55
22 05 55  ---          11 15 56  46.9  32.9 -1.5       0.0   120     1177   22 03 56

22 06 20  J124353      11 16 21  46.8  32.8 -1.5       0.0     3     1177   22 06 20
22 07 30  ---          11 17 31  47.0  32.4 -1.5       0.0    70     1195   22 06 21

22 07 55  M60          11 17 56  47.1  32.3 -1.5       0.0     3     1195   22 07 55
22 09 55  ---          11 19 56  47.3  31.6 -1.4       0.0   120     1226   22 07 56

22 10 20  J124353      11 20 21  47.3  31.5 -1.4       0.0     3     1226   22 10 20
22 11 30  ---          11 21 31  47.4  31.1 -1.4       0.0    70     1244   22 10 21

22 11 55  M60          11 21 57  47.6  31.0 -1.4       0.0     3     1244   22 11 55
22 13 55  ---          11 23 57  47.8  30.3 -1.4       0.0   120     1275   22 11 56

22 14 20  J1241+1141   11 24 22  48.0  29.5 -1.3       0.0     0     1275   22 14 20
22 15 30  ---          11 25 32  48.1  29.1 -1.3       0.0    70     1293   22 14 21

22 15 55  M60          11 25 57  48.0  29.7 -1.3       0.0     0     1293   22 15 55
22 17 55  ---          11 27 57  48.3  29.0 -1.3       0.0   120     1324   22 15 56

22 18 20  J124353      11 28 23  48.2  28.9 -1.3       0.0     3     1324   22 18 20
22 19 30  ---          11 29 33  48.3  28.5 -1.3       0.0    70     1342   22 18 21

22 19 55  M60          11 29 58  48.5  28.4 -1.2       0.0     3     1342   22 19 55
22 21 55  ---          11 31 58  48.7  27.7 -1.2       0.0   120     1373   22 19 56

22 22 20  J124353      11 32 23  48.6  27.6 -1.2       0.0     3     1373   22 22 20
22 23 30  ---          11 33 33  48.7  27.2 -1.2       0.0    70     1391   22 22 21

22 23 55  M60          11 33 58  48.9  27.0 -1.2       0.0     3     1391   22 23 55
22 25 55  ---          11 35 59  49.1  26.3 -1.1       0.0   120     1422   22 23 56

22 26 20  J124353      11 36 24  49.0  26.2 -1.1       0.0     3     1422   22 26 20
22 27 30  ---          11 37 34  49.1  25.8 -1.1       0.0    70     1440   22 26 21
Schedule for HART      (Code Hh )                                   Page   6
               Studying the feasibility of high-precision VLBI astrometry on M60
  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  11 Mar 2025   Day  70 ---

22 27 55  M60          11 37 59  49.3  25.7 -1.1       0.0     3     1440   22 27 55
22 29 55  ---          11 39 59  49.5  25.0 -1.1       0.0   120     1471   22 27 56

22 30 20  J124353      11 40 25  49.4  24.8 -1.1       0.0     3     1471   22 30 20
22 31 30  ---          11 41 35  49.5  24.4 -1.1       0.0    70     1489   22 30 21

22 31 55  M60          11 42 00  49.7  24.3 -1.0       0.0     3     1489   22 31 55
22 33 55  ---          11 44 00  49.9  23.6 -1.0       0.0   120     1520   22 31 56

22 34 20  J1241+1141   11 44 25  49.9  22.6 -1.0       0.0     0     1520   22 34 20
22 35 30  ---          11 45 35  50.0  22.2 -1.0       0.0    70     1538   22 34 21

22 35 55  M60          11 46 00  50.0  22.8 -1.0       0.0     0     1538   22 35 55
22 37 55  ---          11 48 01  50.2  22.1 -0.9       0.0   120     1569   22 35 56

22 38 20  J124353      11 48 26  50.1  22.0 -0.9       0.0     3     1569   22 38 20
22 39 30  ---          11 49 36  50.2  21.6 -0.9       0.0    70     1587   22 38 21

22 39 55  M60          11 50 01  50.4  21.4 -0.9       0.0     3     1587   22 39 55
22 41 55  ---          11 52 01  50.5  20.7 -0.9       0.0   120     1618   22 39 56

22 42 20  J124353      11 52 27  50.5  20.6 -0.9       0.0     3     1618   22 42 20
22 43 30  ---          11 53 37  50.6  20.1 -0.9       0.0    70     1636   22 42 21

22 43 55  M60          11 54 02  50.7  19.9 -0.8       0.0     3     1636   22 43 55
22 45 55  ---          11 56 02  50.8  19.2 -0.8       0.0   120     1667   22 43 56

22 46 20  J124353      11 56 27  50.8  19.1 -0.8       0.0     3     1667   22 46 20
22 47 30  ---          11 57 37  50.9  18.7 -0.8       0.0    70     1685   22 46 21

22 47 55  M60          11 58 02  51.0  18.5 -0.8       0.0     3     1685   22 47 55
22 49 55  ---          12 00 03  51.1  17.7 -0.7       0.0   120     1716   22 47 56

22 50 20  J124353      12 00 28  51.1  17.6 -0.7       0.0     3     1716   22 50 20
22 51 30  ---          12 01 38  51.1  17.2 -0.7       0.0    70     1734   22 50 21

22 51 55  M60          12 02 03  51.3  17.0 -0.7       0.0     3     1734   22 51 55
22 53 55  ---          12 04 03  51.4  16.2 -0.7       0.0   120     1765   22 51 56

22 54 20  J1241+1141   12 04 28  51.4  15.2 -0.6       0.0     0     1765   22 54 20
22 55 30  ---          12 05 39  51.5  14.8 -0.6       0.0    70     1783   22 54 21

22 56 30  J1250+1343   12 06 39  49.0  16.9 -0.8       0.0    29     1783   22 56 30
23 00 00  =1247+139    12 10 09  49.2  15.6 -0.7       0.0   210     1837   22 56 31


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


 ======== Setup file: sess125.C2048
   Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat:
     hh6cm           Values confirmed by E-mail Jonathan Quick 20140219 (CR)
    ****** Only  256.00 of  512.00 MHz total bandwidth is within the IFs
           in the setup file before any FREQ or DOPPLER shifts.

   Setup group:    4         Station: HART              Total bit rate:  2048
   Format: VDIF              Bits per sample: 2         Sample rate: 64.000
   Number of channels: 16    DBE type: DBBC_DDC         Speedup factor:   1.00

   Disk used to record data.

   1st LO=   4600.00   4600.00   4600.00   4600.00   4600.00   4600.00   4600.00   4600.00
             4600.00   4600.00   4600.00   4600.00   4600.00   4600.00   4600.00   4600.00
   Net SB=         L         L         U         U         L         L         U         U
                   L         L         U         U         L         L         U         U
   IF SB =         U         U         U         U         U         U         U         U
                   U         U         U         U         U         U         U         U
   Pol.  =      RCP       LCP       RCP       LCP       RCP       LCP       RCP       LCP 
                RCP       LCP       RCP       LCP       RCP       LCP       RCP       LCP 
   BBC   =         1         9         1         9         2        10         2        10
                   3        11         3        11         4        12         4        12
   BBC SB=         L         L         U         U         L         L         U         U
                   L         L         U         U         L         L         U         U
   IF    =        A1        C1        A1        C1        A1        C1        A1        C1
                  A1        C1        A1        C1        A1        C1        A1        C1

  The following frequency sets based on these setups were used.

   Frequency Set:   9  Setup file default.  Used with PCAL = off
   LO sum=   4830.49  4830.49  4830.49  4830.49  4894.49  4894.49  4894.49  4894.49
             4958.49  4958.49  4958.49  4958.49  5022.49  5022.49  5022.49  5022.49
   BBC fr=    230.49   230.49   230.49   230.49   294.49   294.49   294.49   294.49
              358.49   358.49   358.49   358.49   422.49   422.49   422.49   422.49
   Bandwd=     32.00    32.00    32.00    32.00    32.00    32.00    32.00    32.00
               32.00    32.00    32.00    32.00    32.00    32.00    32.00    32.00
    Matching frequency sets:   9

   Track assignments are: 
    track1=   1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16
    barrel=roll_off 

 POSITIONS OF SOURCES USED IN RECORDING SCANS

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

 * M60               12 41 08.749622   * 12 43 39.971500     12 44 57.539389       0.00
                     11 49 34.61513    * 11 33 09.68800      11 24 42.47089        0.00
                     From catalog imbedded in main SCHED input file.

 * J124353           12 41 22.732369   * 12 43 53.920000     12 45 11.471242       0.00
                     11 55 02.09886    * 11 38 37.36000      11 30 10.22017        0.00
                     From catalog imbedded in main SCHED input file.

 * J1241+1141        12 39 08.335748   * 12 41 39.647000     12 42 57.264691       0.00
                     11 57 52.34245    * 11 41 25.84000      11 32 57.89411        0.00
                     From catalog imbedded in main SCHED input file.

 * B1239+1110        12 39 21.961908   * 12 41 53.428100     12 43 11.114991       0.00
                     11 10 35.84335    * 10 54 09.51200      10 45 41.71636        0.00
                     From catalog imbedded in main SCHED input file.

   1247+139          12 47 57.966311   * 12 50 28.218043     12 51 45.309972       0.09
 * J1250+1343        13 59 59.38502    * 13 43 40.38467      13 35 15.67349        0.20
                     /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc
                     GSFC 2016a X/S astro solution,     81 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
  M60        sess125.C2048         1 2 3 4 5 6 7 8 9 10              1.167    52.479
  J124353    sess125.C2048         1 2 3 4 5 6 7 8 9 10              0.544    20.825
  J1241+1141 sess125.C2048         2 3 4 5 6 7 8 9 10                0.136     4.874
  B1239+1110 sess125.C2048         2 3 4 5 6 7 8 9 10                0.017     0.600
  J1250+1343 sess125.C2048         1 2 3 4 5 6 7 8 9 10              0.117     5.250


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) 
   M60                159.5
   J124353            159.5
   J1241+1141         159.9
   B1239+1110         160.2
   J1250+1343         157.2

  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 

