  COVER INFORMATION 

 Station:    HART      (Code Hh ) 
 Experiment: 5 GHz observation of HESS J1943+213
 Exp. Code:  EA056A  


Schedule Version:       1.00
Processed by SCHED version:  11.30  Version 11.3 update 1.  April 14, 2014

PI:       Kazunori Akiyama

Address:  National Astronomical Observatory of Japan
          2-21-1, Osawa, Mitaka, Tokyo
          Japan
 

Phone:    +81 422 34 3939
EMAIL:    kazunori.akiyama@nao.ac.jp
Fax:      +81 422 34 3814
Phone during observation: +81 422 34 3939

Observing mode: VLBA/MKIV

Notes:
 
 
 

Schedule for HART      (Code Hh )                                   Page   2
               5 GHz observation of HESS J1943+213
  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
----------------------------------------------------------------------------------------

 --- Sun  26 Oct 2014   Day 299 ---

 Next scan frequencies:  4942.49  4942.49  4942.49  4942.49  4974.49  4974.49  4974.49  4974.49
                         5006.49  5006.49  5006.49  5006.49  5038.49  5038.49  5038.49  5038.49
 Next BBC frequencies:    342.49   342.49   342.49   342.49   374.49   374.49   374.49   374.49
                          406.49   406.49   406.49   406.49   438.49   438.49   438.49   438.49
 Next scan bandwidths:     16.00    16.00    16.00    16.00    16.00    16.00    16.00    16.00
                           16.00    16.00    16.00    16.00    16.00    16.00    16.00    16.00

11 30 00  1929+226     15 39 48  15.7  54.4 -3.9       0.0     0        0   11 30 00
11 35 00  ---          15 44 49  16.6  53.6 -3.8       0.0   300       38   11 30 01

11 36 00  1932+204     15 45 49  17.4  55.8 -3.8       0.0    29       38   11 36 00
11 38 00  ---          15 47 49  17.8  55.5 -3.8       0.0   120       54   11 36 01

11 38 00  J1943+213    15 47 49  15.7  56.2 -3.9       0.0   -31       54   No stop 
11 41 00  ---          15 50 50  16.2  55.7 -3.9       0.0   149       77   11 38 01

11 41 00  1932+204     15 50 50  18.3  55.1 -3.7       0.0   -31       77   No stop 
11 44 00  ---          15 53 50  18.9  54.6 -3.7       0.0   149      100   11 41 01

11 44 00  J1943+213    15 53 50  16.8  55.3 -3.8       0.0   -31      100   No stop 
11 47 00  ---          15 56 51  17.3  54.9 -3.8       0.0   149      123   11 44 01

11 48 00  1932+204     15 57 51  19.6  54.0 -3.6       0.0    29      123   11 48 00
11 50 00  ---          15 59 51  20.0  53.7 -3.6       0.0   120      138   11 48 01

11 50 00  J1943+213    15 59 51  17.9  54.4 -3.7       0.0   -31      138   No stop 
11 53 00  ---          16 02 52  18.4  53.9 -3.7       0.0   149      162   11 50 01

11 53 00  1932+204     16 02 52  20.5  53.2 -3.5       0.0   -31      162   No stop 
11 56 00  ---          16 05 52  21.1  52.7 -3.5       0.0   149      185   11 53 01

11 56 00  J1943+213    16 05 52  19.0  53.5 -3.6       0.0   -31      185   No stop 
11 59 00  ---          16 08 53  19.5  53.0 -3.6       0.0   149      208   11 56 01

12 00 00  1932+204     16 09 53  21.8  52.1 -3.4       0.0    29      208   12 00 00
12 02 00  ---          16 11 53  22.1  51.8 -3.4       0.0   120      223   12 00 01

12 02 00  J1943+213    16 11 53  20.1  52.5 -3.5       0.0   -31      223   No stop 
12 05 00  ---          16 14 54  20.6  52.1 -3.5       0.0   149      246   12 02 01

12 05 00  1932+204     16 14 54  22.7  51.2 -3.3       0.0   -31      246   No stop 
12 08 00  ---          16 17 54  23.2  50.7 -3.3       0.0   149      269   12 05 01

12 08 00  J1943+213    16 17 54  21.1  51.6 -3.4       0.0   -31      269   No stop 
12 11 00  ---          16 20 55  21.7  51.1 -3.4       0.0   149      292   12 08 01
Schedule for HART      (Code Hh )                                   Page   3
               5 GHz observation of HESS J1943+213
  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
----------------------------------------------------------------------------------------

 --- Sun  26 Oct 2014   Day 299 ---

12 12 00  1932+204     16 21 55  23.9  50.1 -3.2       0.0    29      292   12 12 00
12 14 00  ---          16 23 55  24.2  49.7 -3.2       0.0   120      308   12 12 01

12 14 00  J1943+213    16 23 55  22.2  50.6 -3.3       0.0   -31      308   No stop 
12 17 00  ---          16 26 55  22.7  50.1 -3.3       0.0   149      331   12 14 01

12 17 00  1932+204     16 26 55  24.7  49.2 -3.1       0.0   -31      331   No stop 
12 20 00  ---          16 29 56  25.3  48.6 -3.1       0.0   149      354   12 17 01

12 20 00  J1943+213    16 29 56  23.2  49.6 -3.2       0.0   -31      354   No stop 
12 23 00  ---          16 32 56  23.7  49.0 -3.2       0.0   149      377   12 20 01

12 24 00  1932+204     16 33 57  25.9  47.9 -3.0       0.0    29      377   12 24 00
12 26 00  ---          16 35 57  26.3  47.5 -3.0       0.0   120      392   12 24 01

12 27 00  1929+226     16 36 57  25.5  45.0 -2.9       0.0    29      392   12 27 00
12 29 00  ---          16 38 57  25.8  44.6 -2.9       0.0   120      408   12 27 01

12 30 00  1923+210     16 39 58  28.0  44.6 -2.8       0.0    30      408   12 30 00
12 39 00  ---          16 48 59  29.4  42.8 -2.6       0.0   540      477   12 30 01

12 40 00  1923+210     16 49 59  29.5  42.6 -2.6       0.0    39      477   12 40 00
12 49 00  ---          16 59 01  30.9  40.7 -2.5       0.0   540      546   12 40 01

12 50 00  1929+226     17 00 01  29.0  40.5 -2.5       0.0    30      546   12 50 00
12 53 00  ---          17 03 01  29.4  39.9 -2.5       0.0   180      569   12 50 01

12 54 00  1932+204     17 04 02  30.7  42.0 -2.5       0.0    29      569   12 54 00
12 56 00  ---          17 06 02  31.0  41.6 -2.5       0.0   120      585   12 54 01

12 56 00  J1943+213    17 06 02  29.1  42.8 -2.6       0.0   -31      585   No stop 
12 59 00  ---          17 09 02  29.6  42.2 -2.6       0.0   149      608   12 56 01

12 59 00  1932+204     17 09 02  31.5  41.0 -2.4       0.0   -31      608   No stop 
13 02 00  ---          17 12 03  31.9  40.3 -2.4       0.0   149      631   12 59 01

13 02 00  J1943+213    17 12 03  30.0  41.6 -2.5       0.0   -31      631   No stop 
13 05 00  ---          17 15 03  30.5  41.0 -2.5       0.0   149      654   13 02 01

13 06 00  1932+204     17 16 04  32.5  39.5 -2.3       0.0    29      654   13 06 00
13 08 00  ---          17 18 04  32.8  39.0 -2.3       0.0   120      669   13 06 01

13 08 00  J1943+213    17 18 04  30.9  40.4 -2.4       0.0   -31      669   No stop 
13 11 00  ---          17 21 04  31.3  39.7 -2.4       0.0   149      692   13 08 01
Schedule for HART      (Code Hh )                                   Page   4
               5 GHz observation of HESS J1943+213
  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
----------------------------------------------------------------------------------------

 --- Sun  26 Oct 2014   Day 299 ---

13 11 00  1932+204     17 21 04  33.2  38.4 -2.2       0.0   -31      692   No stop 
13 14 00  ---          17 24 05  33.6  37.7 -2.2       0.0   149      715   13 11 01

13 14 00  J1943+213    17 24 05  31.8  39.1 -2.3       0.0   -31      715   No stop 
13 17 00  ---          17 27 05  32.2  38.4 -2.3       0.0   149      738   13 14 01

13 18 00  1932+204     17 28 06  34.2  36.8 -2.1       0.0    29      738   13 18 00
13 20 00  ---          17 30 06  34.4  36.3 -2.1       0.0   120      754   13 18 01

13 20 00  J1943+213    17 30 06  32.6  37.7 -2.2       0.0   -31      754   No stop 
13 23 00  ---          17 33 06  33.0  37.1 -2.2       0.0   149      777   13 20 01

13 23 00  1932+204     17 33 06  34.8  35.6 -2.0       0.0   -31      777   No stop 
13 26 00  ---          17 36 07  35.2  34.9 -2.0       0.0   149      800   13 23 01

13 26 00  J1943+213    17 36 07  33.4  36.4 -2.1       0.0   -31      800   No stop 
13 29 00  ---          17 39 07  33.8  35.7 -2.1       0.0   149      823   13 26 01

13 30 00  1929+226     17 40 07  34.3  31.6 -1.9       0.0    27      823   13 30 00
13 35 00  ---          17 45 08  34.9  30.4 -1.8       0.0   300      862   13 30 01

13 36 00  1932+204     17 46 08  36.5  32.4 -1.8       0.0    29      862   13 36 00
13 38 00  ---          17 48 09  36.7  31.9 -1.8       0.0   120      877   13 36 01

13 38 00  J1943+213    17 48 09  35.0  33.6 -1.9       0.0   -31      877   No stop 
13 41 00  ---          17 51 09  35.3  32.8 -1.9       0.0   149      900   13 38 01

13 41 00  1932+204     17 51 09  37.1  31.2 -1.7       0.0   -31      900   No stop 
13 44 00  ---          17 54 10  37.4  30.4 -1.7       0.0   149      923   13 41 01

13 44 00  J1943+213    17 54 10  35.7  32.1 -1.8       0.0   -31      923   No stop 
13 47 00  ---          17 57 10  36.1  31.4 -1.8       0.0   149      946   13 44 01

13 47 00  1932+204     17 57 10  37.7  29.6 -1.6       0.0   -31      946   No stop 
13 50 00  ---          18 00 11  38.1  28.8 -1.6       0.0   149      969   13 47 01

13 50 00  J1943+213    18 00 11  36.4  30.6 -1.7       0.0   -31      969   No stop 
13 53 00  ---          18 03 11  36.7  29.8 -1.7       0.0   149      992   13 50 01

13 54 00  1932+204     18 04 11  38.5  27.7 -1.5       0.0    29      992   13 54 00
13 56 00  ---          18 06 12  38.7  27.2 -1.5       0.0   120     1008   13 54 01

13 56 00  J1943+213    18 06 12  37.1  29.1 -1.6       0.0   -31     1008   No stop 
13 59 00  ---          18 09 12  37.4  28.3 -1.6       0.0   149     1031   13 56 01
Schedule for HART      (Code Hh )                                   Page   5
               5 GHz observation of HESS J1943+213
  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
----------------------------------------------------------------------------------------

 --- Sun  26 Oct 2014   Day 299 ---

13 59 00  1932+204     18 09 12  39.0  26.4 -1.4       0.0   -31     1031   No stop 
14 02 00  ---          18 12 13  39.3  25.6 -1.4       0.0   149     1054   13 59 01

14 02 00  J1943+213    18 12 13  37.7  27.5 -1.5       0.0   -31     1054   No stop 
14 05 00  ---          18 15 13  38.0  26.7 -1.5       0.0   149     1077   14 02 01

14 05 00  1932+204     18 15 13  39.6  24.7 -1.3       0.0   -31     1077   No stop 
14 08 00  ---          18 18 14  39.9  23.9 -1.3       0.0   149     1100   14 05 01

14 08 00  J1943+213    18 18 14  38.3  25.9 -1.4       0.0   -31     1100   No stop 
14 11 00  ---          18 21 14  38.6  25.1 -1.4       0.0   149     1123   14 08 01

14 12 00  1932+204     18 22 14  40.2  22.8 -1.2       0.0    29     1123   14 12 00
14 14 00  ---          18 24 15  40.4  22.2 -1.2       0.0   120     1138   14 12 01

14 14 00  J1943+213    18 24 15  38.9  24.3 -1.3       0.0   -31     1138   No stop 
14 17 00  ---          18 27 15  39.2  23.4 -1.3       0.0   149     1162   14 14 01

14 17 00  1932+204     18 27 15  40.6  21.3 -1.1       0.0   -31     1162   No stop 
14 20 00  ---          18 30 16  40.9  20.5 -1.1       0.0   149     1185   14 17 01

14 20 00  J1943+213    18 30 16  39.4  22.6 -1.2       0.0   -31     1185   No stop 
14 23 00  ---          18 33 16  39.7  21.8 -1.2       0.0   149     1208   14 20 01

14 23 00  1932+204     18 33 16  41.1  19.6 -1.0       0.0   -31     1208   No stop 
14 26 00  ---          18 36 17  41.3  18.7 -1.0       0.0   149     1231   14 23 01

14 26 00  J1943+213    18 36 17  39.9  20.9 -1.1       0.0   -31     1231   No stop 
14 29 00  ---          18 39 17  40.2  20.0 -1.1       0.0   149     1254   14 26 01

14 30 00  1929+226     18 40 17  39.8  15.6 -0.9       0.0    27     1254   14 30 00
14 35 00  ---          18 45 18  40.0  14.1 -0.8       0.0   300     1292   14 30 01

14 36 00  1932+204     18 46 18  42.0  15.7 -0.8       0.0    29     1292   14 36 00
14 38 00  ---          18 48 19  42.1  15.1 -0.8       0.0   120     1308   14 36 01

14 38 00  J1943+213    18 48 19  40.8  17.4 -0.9       0.0   -31     1308   No stop 
14 41 00  ---          18 51 19  41.0  16.5 -0.9       0.0   149     1331   14 38 01

14 41 00  1932+204     18 51 19  42.3  14.1 -0.7       0.0   -31     1331   No stop 
14 44 00  ---          18 54 20  42.5  13.2 -0.7       0.0   149     1354   14 41 01

14 44 00  J1943+213    18 54 20  41.2  15.6 -0.8       0.0   -31     1354   No stop 
14 47 00  ---          18 57 20  41.4  14.7 -0.8       0.0   149     1377   14 44 01
Schedule for HART      (Code Hh )                                   Page   6
               5 GHz observation of HESS J1943+213
  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
----------------------------------------------------------------------------------------

 --- Sun  26 Oct 2014   Day 299 ---

14 48 00  1932+204     18 58 20  42.7  12.0 -0.6       0.0    29     1377   14 48 00
14 50 00  ---          19 00 21  42.7  11.3 -0.6       0.0   120     1392   14 48 01

14 50 00  J1943+213    19 00 21  41.6  13.8 -0.7       0.0   -31     1392   No stop 
14 53 00  ---          19 03 21  41.7  12.9 -0.7       0.0   149     1415   14 50 01

14 53 00  1932+204     19 03 21  42.9  10.4 -0.5       0.0   -31     1415   No stop 
14 56 00  ---          19 06 22  43.0   9.4 -0.5       0.0   149     1438   14 53 01

14 56 00  J1943+213    19 06 22  41.9  12.0 -0.6       0.0   -31     1438   No stop 
14 59 00  ---          19 09 22  42.0  11.1 -0.6       0.0   149     1462   14 56 01

15 00 00  1932+204     19 10 22  43.1   8.2 -0.4       0.0    29     1462   15 00 00
15 02 00  ---          19 12 23  43.2   7.5 -0.4       0.0   120     1477   15 00 01

15 02 00  J1943+213    19 12 23  42.1  10.1 -0.5       0.0   -31     1477   No stop 
15 05 00  ---          19 15 23  42.2   9.2 -0.5       0.0   149     1500   15 02 01

15 05 00  1932+204     19 15 23  43.3   6.6 -0.3       0.0   -31     1500   No stop 
15 08 00  ---          19 18 24  43.3   5.6 -0.3       0.0   149     1523   15 05 01

15 08 00  J1943+213    19 18 24  42.3   8.3 -0.4       0.0   -31     1523   No stop 
15 11 00  ---          19 21 24  42.4   7.3 -0.4       0.0   149     1546   15 08 01

15 12 00  1932+204     19 22 24  43.4   4.3 -0.2       0.0    29     1546   15 12 00
15 14 00  ---          19 24 25  43.5   3.7 -0.2       0.0   120     1562   15 12 01

15 14 00  J1943+213    19 24 25  42.5   6.4 -0.3       0.0   -31     1562   No stop 
15 17 00  ---          19 27 25  42.6   5.4 -0.3       0.0   149     1585   15 14 01

15 17 00  1932+204     19 27 25  43.5   2.7 -0.1       0.0   -31     1585   No stop 
15 20 00  ---          19 30 26  43.5   1.7 -0.1       0.0   149     1608   15 17 01

15 20 00  J1943+213    19 30 26  42.6   4.5 -0.2       0.0   -31     1608   No stop 
15 23 00  ---          19 33 26  42.7   3.5 -0.2       0.0   149     1631   15 20 01

15 24 00  1932+204     19 34 26  43.5   0.4 -0.0       0.0    29     1631   15 24 00
15 26 00  ---          19 36 27  43.5 359.8  0.0       0.0   120     1646   15 24 01

15 27 00  1929+226     19 37 27  41.3 358.3  0.1       0.0    29     1646   15 27 00
15 30 00  ---          19 40 27  41.3 357.4  0.1       0.0   180     1669   15 27 01


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


 ======== Setup file: sess314.C1024
   Matching groups in /usr2/local/sched/catalogs/freq.dat:
     hh6cm           Values confirmed by E-mail Jonathan Quick 20140219 (CR)

   Setup group:    9         Station: HART              Total bit rate:  1024
   Format: MARK5B            Bits per sample: 2         Sample rate: 32.000
   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         5         1         5         2         6         2         6
                   3         7         3         7         4         8         4         8
   BBC SB=         L         L         U         U         L         L         U         U
                   L         L         U         U         L         L         U         U
   IF    =        A1        B1        A1        B1        A1        B1        A1        B1
                  A1        B1        A1        B1        A1        B1        A1        B1

  The following frequency sets based on these setups were used.

   Frequency Set:  11  Setup file default.  Used with PCAL = off
   LO sum=   4942.49  4942.49  4942.49  4942.49  4974.49  4974.49  4974.49  4974.49
             5006.49  5006.49  5006.49  5006.49  5038.49  5038.49  5038.49  5038.49
   BBC fr=    342.49   342.49   342.49   342.49   374.49   374.49   374.49   374.49
              406.49   406.49   406.49   406.49   438.49   438.49   438.49   438.49
   Bandwd=     16.00    16.00    16.00    16.00    16.00    16.00    16.00    16.00
               16.00    16.00    16.00    16.00    16.00    16.00    16.00    16.00
    Matching frequency sets:  11

   Track assignments are: 
    track1=  18, 26,  2, 10, 20, 28,  4, 12, 22, 30,  6, 14, 24, 32,  8, 16
    barrel=roll_off 

 POSITIONS OF SOURCES USED IN RECORDING SCANS

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

 * J1943+213         19 41 45.851525   * 19 43 56.237200     19 44 34.919546       0.00
                     21 11 08.62167    * 21 18 23.40200      21 20 55.64598        0.00
                     From catalog imbedded in main SCHED input file.

 * 1932+204          19 32 59.558257   * 19 35 10.472910     19 35 49.250402       0.22
                     20 25 14.21757    * 20 31 54.15434      20 34 15.93227        0.41
                     From catalog imbedded in main SCHED input file.

 * 1929+226          19 29 16.894907   * 19 31 24.916800     19 32 02.813002       0.10
                     22 37 06.35098    * 22 43 31.25900      22 45 49.14408        0.10
                     From catalog imbedded in main SCHED input file.

 * 1923+210          19 23 49.792437   * 19 25 59.605400     19 26 37.994206       0.10
                     21 00 23.30491    * 21 06 26.16200      21 08 37.12890        0.10
                     From catalog imbedded in main SCHED input file.



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
  J1943+213  sess314.C1024         1 2 3 4 5 6 7 8 11 12             1.550    88.238
  1932+204   sess314.C1024         1 2 3 4 5 6 7 8 11 12             1.383    83.416
  1929+226   sess314.C1024         1 2 3 4 5 6 7 8 11 12             0.383    25.300
  1923+210   sess314.C1024         1 2 3 4 5 6 7 8 11 12             0.300    19.800


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) 
   J1943+213           90.3
   1932+204            88.1
   1929+226            87.8
   1923+210            86.2

  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 

