  COVER INFORMATION 

 Station:    SHANGHAI  (Code Sh ) 
 Experiment: Locating AGN in local analogs of Lyman break galaxies
 Exp. Code:  EO006A  


Schedule Version:       1.00                                              
Processed by SCHED version:   6.05  June 2006                             

PI:       R.A. Overzier                                                   

Address:  MPA                                                             
          Karl-Schwarzschildstr. 1                                        
          Garching                                                        
          Germany                                                         

Phone:    +49-89-300002216                                                
EMAIL:    overzier@mpa-garching.mpg.de                                    
Fax:                                                                      
Phone during observation:                                                 

Observing mode: Phase-referencing of a source at 18cm (1 Gb/s)            

Notes:    Target: J015028                                                 
          Phase-reference calibrator: J0158+1307                          
          Fringe finder: J0237+2848                                       
          Amplitude calibrator: J0204+1514                                

Schedule for SHANGHAI  (Code Sh )                                   Page   2
               Locating AGN in local analogs of Lyman break galaxies
  UP:  D => Below limits;  H => Below horizon mask.  blank => Up.
  Early: Seconds between end of slew and start.   Dwell: On source seconds. 
  Tapes: Drive, Index, Start footage / Direction, Head Group, End footage.
         For disks, the footages are really the GBytes
  TPStart:  Tape motion start time.  Frequencies are LO sum (band edge).
  SYNC: Time correlator is expected to sync up.
----------------------------------------------------------------------------------------
Start UT  Source               Start / Stop                 Early    Tapes      TPStart
Stop UT                  LST      EL    AZ   HA  UP   ParA  Dwell  (see above)   SYNC
----------------------------------------------------------------------------------------

 --- Wed   4 Jun 2008   Day 156 ---

 Next scan frequencies:  1610.49  1610.49  1610.49  1610.49  1642.49  1642.49
                         1642.49  1642.49  1674.49  1674.49  1674.49  1674.49
                         1706.49  1706.49  1706.49  1706.49
 Next BBC frequencies:    689.51   689.51   689.51   689.51   657.51   657.51
                          657.51   657.51   625.51   625.51   625.51   625.51
                          593.51   593.51   593.51   593.51
 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

03 00 00  J0158+1307   03 56 31  57.7 242.9  2.0      51.5     0   1  1      0  03 00 00
03 02 00  =0156+128    03 58 31  57.3 243.5  2.0      51.9   120   F  1     15  03 00 01

03 02 40  J015028      03 59 11  55.5 245.9  2.1      53.4    35   1  1     15  03 02 40
03 07 20  ---          04 03 52  54.6 247.1  2.2      54.1   280   F  1     52  03 02 41

03 08 00  J0158+1307   04 04 32  56.1 245.1  2.1      52.9    35   1  1     52  03 08 00
03 09 40  =0156+128    04 06 12  55.8 245.5  2.1      53.2   100   F  1     65  03 08 01

03 10 20  J015028      04 06 52  54.0 247.8  2.3      54.5    35   1  1     65  03 10 20
03 15 00  ---          04 11 33  53.1 249.0  2.3      55.2   280   F  1    101  03 10 21

03 15 40  J0158+1307   04 12 13  54.6 247.0  2.2      54.1    35   1  1    101  03 15 40
03 17 20  =0156+128    04 13 53  54.3 247.5  2.2      54.3   100   F  1    114  03 15 41

03 18 00  J015028      04 14 34  52.5 249.6  2.4      55.5    35   1  1    114  03 18 00
03 22 40  ---          04 19 14  51.5 250.7  2.5      56.1   280   F  1    150  03 18 01

03 23 20  J0158+1307   04 19 54  53.1 248.9  2.3      55.1    35   1  1    150  03 23 20
03 25 00  =0156+128    04 21 35  52.7 249.3  2.4      55.3   100   F  1    163  03 23 21

03 25 40  J015028      04 22 15  50.9 251.3  2.5      56.4    35   1  1    163  03 25 40
03 30 20  ---          04 26 56  50.0 252.3  2.6      56.9   280   F  1    199  03 25 41

03 31 00  J0158+1307   04 27 36  51.5 250.6  2.5      56.0    35   1  1    199  03 31 00
03 32 40  =0156+128    04 29 16  51.2 251.0  2.5      56.2   100   F  1    212  03 31 01

03 33 20  J015028      04 29 56  49.4 252.9  2.7      57.2    35   1  1    212  03 33 20
03 38 00  ---          04 34 37  48.4 253.9  2.7      57.7   280   F  1    248  03 33 21

03 38 40  J0158+1307   04 35 17  50.0 252.2  2.6      56.9    35   1  1    248  03 38 40
03 40 20  =0156+128    04 36 57  49.6 252.6  2.6      57.0   100   F  1    261  03 38 41
Schedule for SHANGHAI  (Code Sh )                                   Page   3
               Locating AGN in local analogs of Lyman break galaxies
  UP:  D => Below limits;  H => Below horizon mask.  blank => Up.
  Early: Seconds between end of slew and start.   Dwell: On source seconds. 
  Tapes: Drive, Index, Start footage / Direction, Head Group, End footage.
         For disks, the footages are really the GBytes
  TPStart:  Tape motion start time.  Frequencies are LO sum (band edge).
  SYNC: Time correlator is expected to sync up.
----------------------------------------------------------------------------------------
Start UT  Source               Start / Stop                 Early    Tapes      TPStart
Stop UT                  LST      EL    AZ   HA  UP   ParA  Dwell  (see above)   SYNC
----------------------------------------------------------------------------------------

 --- Wed   4 Jun 2008   Day 156 ---

03 41 00  J015028      04 37 37  47.8 254.4  2.8      57.9    35   1  1    261  03 41 00
03 45 40  ---          04 42 18  46.8 255.3  2.9      58.3   280   F  1    297  03 41 01

03 46 20  J0158+1307   04 42 58  48.4 253.8  2.7      57.6    35   1  1    297  03 46 20
03 48 00  =0156+128    04 44 39  48.1 254.1  2.8      57.8   100   F  1    310  03 46 21

03 48 40  J015028      04 45 19  46.2 255.9  2.9      58.5    35   1  1    310  03 48 40
03 53 20  ---          04 49 59  45.2 256.7  3.0      58.9   280   F  1    346  03 48 41

03 54 00  J0158+1307   04 50 39  46.8 255.3  2.9      58.3    35   1  1    346  03 54 00
03 55 40  =0156+128    04 52 20  46.5 255.6  2.9      58.4   100   F  1    359  03 54 01

03 56 20  J015028      04 53 00  44.6 257.3  3.0      59.1    35   1  1    359  03 56 20
04 01 00  ---          04 57 41  43.6 258.1  3.1      59.4   280   F  1    395  03 56 21

04 01 40  J0158+1307   04 58 21  45.2 256.7  3.0      58.8    35   1  1    395  04 01 40
04 03 20  =0156+128    05 00 01  44.9 257.0  3.0      59.0   100   F  1    408  04 01 41

04 04 00  J015028      05 00 41  43.0 258.6  3.2      59.6    35   1  1    408  04 04 00
04 08 40  ---          05 05 22  42.0 259.4  3.2      59.8   280   F  1    444  04 04 01

04 09 20  J0158+1307   05 06 02  43.6 258.0  3.1      59.3    35   1  1    444  04 09 20
04 11 00  =0156+128    05 07 42  43.3 258.3  3.1      59.4   100   F  1    457  04 09 21

04 11 40  J015028      05 08 22  41.4 259.9  3.3      60.0    35   1  1    457  04 11 40
04 16 20  ---          05 13 03  40.4 260.6  3.4      60.2   280   F  1    493  04 11 41

04 17 00  J0158+1307   05 13 43  42.0 259.3  3.2      59.8    35   1  1    493  04 17 00
04 18 40  =0156+128    05 15 24  41.6 259.6  3.3      59.9   100   F  1    506  04 17 01

04 19 20  J015028      05 16 04  39.7 261.1  3.4      60.3    35   1  1    506  04 19 20
04 24 00  ---          05 20 44  38.7 261.8  3.5      60.5   280   F  1    542  04 19 21

04 24 40  J0158+1307   05 21 25  40.4 260.6  3.4      60.2    35   1  1    542  04 24 40
04 26 20  =0156+128    05 23 05  40.0 260.8  3.4      60.2   100   F  1    555  04 24 41

04 27 00  J015028      05 23 45  38.1 262.3  3.5      60.6    35   1  1    555  04 27 00
04 31 40  ---          05 28 26  37.1 263.0  3.6      60.8   280   F  1    591  04 27 01

04 32 20  J0158+1307   05 29 06  38.8 261.8  3.5      60.5    35   1  1    591  04 32 20
04 34 00  =0156+128    05 30 46  38.4 262.0  3.5      60.6   100   F  1    604  04 32 21

04 34 40  J015028      05 31 26  36.5 263.4  3.7      60.9    35   1  1    604  04 34 40
04 39 20  ---          05 36 07  35.5 264.1  3.8      61.0   280   F  1    640  04 34 41
Schedule for SHANGHAI  (Code Sh )                                   Page   4
               Locating AGN in local analogs of Lyman break galaxies
  UP:  D => Below limits;  H => Below horizon mask.  blank => Up.
  Early: Seconds between end of slew and start.   Dwell: On source seconds. 
  Tapes: Drive, Index, Start footage / Direction, Head Group, End footage.
         For disks, the footages are really the GBytes
  TPStart:  Tape motion start time.  Frequencies are LO sum (band edge).
  SYNC: Time correlator is expected to sync up.
----------------------------------------------------------------------------------------
Start UT  Source               Start / Stop                 Early    Tapes      TPStart
Stop UT                  LST      EL    AZ   HA  UP   ParA  Dwell  (see above)   SYNC
----------------------------------------------------------------------------------------

 --- Wed   4 Jun 2008   Day 156 ---

04 40 00  J0158+1307   05 36 47  37.1 262.9  3.6      60.8    35   1  1    640  04 40 00
04 41 40  =0156+128    05 38 27  36.8 263.2  3.7      60.8   100   F  1    653  04 40 01

04 42 20  J015028      05 39 07  34.8 264.5  3.8      61.1    35   1  1    653  04 42 20
04 47 00  ---          05 43 48  33.8 265.2  3.9      61.2   280   F  1    689  04 42 21

04 47 40  J0158+1307   05 44 28  35.5 264.1  3.8      61.0    35   1  1    689  04 47 40
04 49 20  =0156+128    05 46 09  35.1 264.3  3.8      61.0   100   F  1    702  04 47 41

04 50 00  J015028      05 46 49  33.2 265.6  3.9      61.3    35   1  1    702  04 50 00
04 54 40  ---          05 51 29  32.2 266.3  4.0      61.4   280   F  1    738  04 50 01

04 55 20  J0158+1307   05 52 10  33.9 265.2  3.9      61.2    35   1  1    738  04 55 20
04 57 00  =0156+128    05 53 50  33.5 265.4  3.9      61.2   100   F  1    751  04 55 21

04 57 40  J015028      05 54 30  31.6 266.7  4.1      61.4    35   1  1    751  04 57 40
05 02 20  ---          05 59 11  30.6 267.3  4.1      61.5   280   F  1    787  04 57 41

05 03 00  J0158+1307   05 59 51  32.2 266.2  4.0      61.3    35   1  1    787  05 03 00
05 04 40  =0156+128    06 01 31  31.9 266.5  4.0      61.4   100   F  1    800  05 03 01

05 05 20  J015028      06 02 11  29.9 267.7  4.2      61.5    35   1  1    800  05 05 20
05 10 00  ---          06 06 52  28.9 268.4  4.3      61.5   280   F  1    836  05 05 21

05 10 40  J0158+1307   06 07 32  30.6 267.3  4.1      61.4    35   1  1    836  05 10 40
05 12 20  =0156+128    06 09 12  30.2 267.5  4.2      61.5   100   F  1    849  05 10 41

05 13 00  J015028      06 09 52  28.3 268.8  4.3      61.6    35   1  1    849  05 13 00
05 17 40  ---          06 14 33  27.3 269.4  4.4      61.6   280   F  1    885  05 13 01

05 18 20  J0158+1307   06 15 13  28.9 268.3  4.3      61.5    35   1  1    885  05 18 20
05 20 00  =0156+128    06 16 54  28.6 268.5  4.3      61.5   100   F  1    898  05 18 21

05 20 40  J015028      06 17 34  26.6 269.8  4.4      61.6    35   1  1    898  05 20 40
05 25 20  ---          06 22 15  25.6 270.4  4.5      61.6   280   F  1    934  05 20 41

05 26 00  J0158+1307   06 22 55  27.3 269.3  4.4      61.6    35   1  1    934  05 26 00
05 27 40  =0156+128    06 24 35  26.9 269.5  4.4      61.6   100   F  1    947  05 26 01

05 28 20  J015028      06 25 15  25.0 270.7  4.6      61.6    35   1  1    947  05 28 20
05 33 00  ---          06 29 56  24.0 271.3  4.7      61.6   280   F  1    983  05 28 21

05 33 40  J0158+1307   06 30 36  25.6 270.3  4.5      61.6    35   1  1    983  05 33 40
05 35 20  =0156+128    06 32 16  25.3 270.5  4.5      61.6   100   F  1    996  05 33 41
Schedule for SHANGHAI  (Code Sh )                                   Page   5
               Locating AGN in local analogs of Lyman break galaxies
  UP:  D => Below limits;  H => Below horizon mask.  blank => Up.
  Early: Seconds between end of slew and start.   Dwell: On source seconds. 
  Tapes: Drive, Index, Start footage / Direction, Head Group, End footage.
         For disks, the footages are really the GBytes
  TPStart:  Tape motion start time.  Frequencies are LO sum (band edge).
  SYNC: Time correlator is expected to sync up.
----------------------------------------------------------------------------------------
Start UT  Source               Start / Stop                 Early    Tapes      TPStart
Stop UT                  LST      EL    AZ   HA  UP   ParA  Dwell  (see above)   SYNC
----------------------------------------------------------------------------------------

 --- Wed   4 Jun 2008   Day 156 ---

05 36 00  J015028      06 32 56  23.3 271.7  4.7      61.5    35   1  1    996  05 36 00
05 40 40  ---          06 37 37  22.3 272.3  4.8      61.5   280   F  1   1032  05 36 01

05 41 20  J0158+1307   06 38 17  24.0 271.3  4.6      61.5    35   1  1   1032  05 41 20
05 43 00  =0156+128    06 39 57  23.6 271.5  4.7      61.5   100   F  1   1045  05 41 21

05 43 40  J015028      06 40 38  21.7 272.7  4.8      61.5    35   1  1   1045  05 43 40
05 48 20  ---          06 45 18  20.7 273.3  4.9      61.4   280   F  1   1081  05 43 41

05 49 00  J0158+1307   06 45 58  22.3 272.3  4.8      61.5    35   1  1   1081  05 49 00
05 50 40  =0156+128    06 47 39  22.0 272.5  4.8      61.5   100   F  1   1094  05 49 01

05 51 20  J015028      06 48 19  20.0 273.6  5.0      61.4    35   1  1   1094  05 51 20
05 56 00  ---          06 53 00  19.0 274.2  5.0      61.3   280   F  1   1130  05 51 21

05 56 40  J0158+1307   06 53 40  20.7 273.2  4.9      61.4    35   1  1   1130  05 56 40
05 58 20  =0156+128    06 55 20  20.3 273.4  4.9      61.4   100   F  1   1143  05 56 41

05 59 00  J015028      06 56 00  18.4 274.6  5.1      61.2    35   1  1   1143  05 59 00
06 03 40  ---          07 00 41  17.4 275.2  5.2      61.2   280   F  1   1179  05 59 01

06 04 20  J0158+1307   07 01 21  19.1 274.2  5.0      61.3    35   1  1   1179  06 04 20
06 06 00  =0156+128    07 03 01  18.7 274.4  5.1      61.3   100   F  1   1192  06 04 21

06 07 30  J0237+2848   07 04 31  33.2 286.2  4.4      69.9    64   1  1   1192  06 07 30
06 15 00  =0234+285    07 12 03  31.7 286.8  4.6      69.3   450   F  1   1250  06 07 31

06 16 30  J0204+1514   07 13 33  18.7 276.9  5.1      61.8    66   1  1   1250  06 16 30
06 24 00  =0202+149    07 21 04  17.1 277.8  5.3      61.6   450   F  1   1308  06 16 31

06 25 40  J0158+1307   07 22 44  14.5 276.8  5.4      60.8    94   1  1   1308  06 25 40
06 27 20  =0156+128    07 24 25  14.1 277.0  5.4      60.8   100   F  1   1321  06 25 41

06 28 00  J015028      07 25 05  12.2 278.2  5.6      60.5    35   1  1   1321  06 28 00
06 32 40  ---          07 29 46  11.2 278.7  5.6      60.4   280   F  1   1357  06 28 01

06 33 20  J0158+1307   07 30 26  12.9 277.8  5.5      60.6    35   1  1   1357  06 33 20
06 35 00  =0156+128    07 32 06  12.5 278.0  5.5      60.6   100   F  1   1370  06 33 21

06 35 40  J015028      07 32 46  10.6 279.1  5.7      60.3    35   1  1   1370  06 35 40
06 40 20  ---          07 37 27   9.6 279.7  5.8      60.1   280   F  1   1406  06 35 41

06 41 00  J0158+1307   07 38 07  11.2 278.7  5.6      60.4    35   1  1   1406  06 41 00
06 42 40  =0156+128    07 39 47  10.9 278.9  5.7      60.3   100   F  1   1419  06 41 01
Schedule for SHANGHAI  (Code Sh )                                   Page   6
               Locating AGN in local analogs of Lyman break galaxies
  UP:  D => Below limits;  H => Below horizon mask.  blank => Up.
  Early: Seconds between end of slew and start.   Dwell: On source seconds. 
  Tapes: Drive, Index, Start footage / Direction, Head Group, End footage.
         For disks, the footages are really the GBytes
  TPStart:  Tape motion start time.  Frequencies are LO sum (band edge).
  SYNC: Time correlator is expected to sync up.
----------------------------------------------------------------------------------------
Start UT  Source               Start / Stop                 Early    Tapes      TPStart
Stop UT                  LST      EL    AZ   HA  UP   ParA  Dwell  (see above)   SYNC
----------------------------------------------------------------------------------------

 --- Wed   4 Jun 2008   Day 156 ---

06 43 20  J015028      07 40 27   9.0 280.1  5.8      60.0    35   1  1   1419  06 43 20
06 48 00  ---          07 45 08   8.0 280.6  5.9      59.8   280   F  1   1455  06 43 21

06 48 40  J0158+1307   07 45 48   9.6 279.6  5.8      60.1    35   1  1   1455  06 48 40
06 50 20  =0156+128    07 47 28   9.3 279.8  5.8      60.0   100   F  1   1468  06 48 41

06 51 00  J015028      07 48 09   7.4 281.0  6.0      59.7    35   1  1   1468  06 51 00
06 55 40  ---          07 52 49   6.4 281.6  6.0      59.5   280   F  1   1504  06 51 01

06 56 20  J0158+1307   07 53 29   8.0 280.6  5.9      59.8    35   1  1   1504  06 56 20
06 58 00  =0156+128    07 55 10   7.6 280.8  5.9      59.7   100   F  1   1517  06 56 21


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


 Setup file: eo006a.18cm
   Matches group sh18cm in /afs/mpa/home/overzier/SCHED/catalogs/freq.dat
    Huang Xinyong 27Sept05
    ****** Only  244.98 of  256.00 MHz total bandwidth is within the IFs
           in the setup file before any FREQ or DOPPLER shifts.

   Setup group:    9         Station: SHANGHAI          Total bit rate: 1024
   Format: MKIV1:2           Bits per sample: 2         Sample rate: 32.000
   Number of channels: 16                               Speedup factor:   0.50

   Disk used to record data.

   1st LO=   2300.00   2300.00   2300.00   2300.00   2300.00   2300.00   2300.00   2300.00
             2300.00   2300.00   2300.00   2300.00   2300.00   2300.00   2300.00   2300.00
   Net SB=         L         L         U         U         L         L         U         U
                   L         L         U         U         L         L         U         U
   Pol.  =      RCP       LCP       RCP       LCP       RCP       LCP       RCP       LCP 
                RCP       LCP       RCP       LCP       RCP       LCP       RCP       LCP 
   BBC   =         1         2         1         2         3         4         3         4
                   5         6         5         6         7         8         7         8
   BBC SB=         U         U         L         L         U         U         L         L
                   U         U         L         L         U         U         L         L
   IF    =        C         A         C         A         C         A         C         A 
                  C         A         C         A         C         A         C         A 

  The following frequency sets based on this setup were used.

   Frequency Set:   9  Setup file default.  Used pcal sets:   1
   LO sum=    1610.49   1610.49   1610.49   1610.49   1642.49   1642.49   1642.49   1642.49
              1674.49   1674.49   1674.49   1674.49   1706.49   1706.49   1706.49   1706.49
   BBC fr=     689.51    689.51    689.51    689.51    657.51    657.51    657.51    657.51
               625.51    625.51    625.51    625.51    593.51    593.51    593.51    593.51
   Bandwd=     16.000    16.000    16.000    16.000    16.000    16.000    16.000    16.000
               16.000    16.000    16.000    16.000    16.000    16.000    16.000    16.000

  The following pulse cal sets were used with this setup:

   Pulse cal detection set:   1  PCAL = 1MHZ
    PCALXB1=   S1    S3    S5    S7    S9    S11   S13   S15
    PCALXB2=   S2    S4    S6    S8    S10   S12   S14   S16
    PCALFR1=   490   510   490   510   490   510   490   510
    PCALFR2=   490   510   490   510   490   510   490   510

   Track assignments are: 
    track1=   2, 10, 18, 26,  3, 11, 19, 27, 66, 74, 82, 90, 67, 75, 83, 91
    barrel=roll_off 
 SOURCE LIST -- Locating AGN in local analogs of Lyman break galaxies
     Catalog positions marked with *. 
     Precession of date coordinates is based on stop time of first scan.
     Names used in schedule marked with *. 
     Short names used in VLA and SNAP files marked with +. 
     Observation date used in B1950/J2000 coordinate conversion (PRECDATE):  1979.900
     No adjustments are made for rates (DRA, DDEC).
     Scan hours are for recording scans only. 
     Baseline hours are only counted for scans above horizon at both ends.

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

 * J015028           01 47 47.576311   * 01 50 28.420000     01 50 55.133725       0.00
                     12 54 07.49997    * 13 08 58.10000      13 11 28.52096        0.00
                     From catalog imbedded in main SCHED input file.
                        3.422 scan hours,    175.778 baseline hours above horizon.

 * J0158+1307        01 56 14.946660   * 01 58 56.273801     01 59 23.037067       0.60
   0156+128          12 52 29.70047    * 13 07 02.74128      13 09 30.43668        1.32
                     /afs/mpa/home/overzier/SCHED/catalogs/sources.vlba
                     VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro
                        1.283 scan hours,     60.250 baseline hours above horizon.

 * J0204+1514        02 02 07.396229   * 02 04 50.413897     02 05 17.424258       0.31
   0202+149          14 59 50.93943    * 15 14 11.04365      15 16 36.23832        0.20
   J0204+15          /afs/mpa/home/overzier/SCHED/catalogs/sources.vlba
                     VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro
                        0.125 scan hours,      6.856 baseline hours above horizon.

 * J0237+2848        02 34 55.589592   * 02 37 52.405679     02 38 21.491470       0.23
   0234+285          28 35 11.40780    * 28 48 08.99005      28 50 18.82438        0.40
   J0237+28          /afs/mpa/home/overzier/SCHED/catalogs/sources.vlba
                     VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro
                        0.125 scan hours,      6.835 baseline hours above horizon.



  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) 
   J015028             43.6
   J0158+1307          41.6
   J0204+1514          39.6
   J0237+2848          30.4

  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 

