COVER INFORMATION Station: VLBA_KP (Code Kp ) Experiment: BK121B - 2nd epoch ToO observations of SGR 1806-20 Exp. Code: BK121B Schedule Version: 1.00 Processed by SCHED version: Release of 18 Sept. 2003 PI: Mike Garrett Address: JIVE Postbus 2 7990AA Dwingeloo The Netherlands Phone: +31 521596511 EMAIL: garrett@jive.nl Fax: +31 521 596539 Phone during observation: +31 521596511 & +31 621201417 Observing mode: Continuum Notes: Schedule for VLBA_KP (Code Kp ) Page 2 BK121B - 2nd epoch ToO observations of SGR 1806-20 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. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Thu 6 Jan 2005 Day 6 --- Next scan frequencies: 1400.49 1400.49 1408.49 1408.49 1416.49 1416.49 1424.49 1424.49 Next BBC frequencies: 999.51 999.51 991.51 991.51 983.51 983.51 975.51 975.51 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 18 04 48 J1825-1718 17 44 01 39.7 167.0 -0.7 -11.6 0 1 1 0 18 04 48 18 06 18 --- 17 45 31 39.8 167.4 -0.7 -11.1 90 F 1 1197 18 06 18 J1811-2055 17 45 31 36.8 172.5 -0.4 -6.8 -12 1 1 1197 18 06 18 18 07 48 --- 17 47 01 36.8 172.9 -0.4 -6.5 78 F 1 2393 18 07 48 SGR1806-20 17 47 01 37.4 173.5 -0.4 -5.8 -7 1 1 2393 18 07 48 18 10 48 --- 17 50 01 37.4 174.4 -0.3 -5.0 173 F 1 4787 18 10 48 J1811-2055 17 50 01 36.9 173.8 -0.4 -5.7 -7 1 1 4787 18 10 48 18 12 17 --- 17 51 31 36.9 174.2 -0.3 -5.3 83 F 1 5984 18 12 17 SGR1806-20 17 51 31 37.5 174.9 -0.3 -4.7 -7 1 1 5984 18 12 17 18 15 17 --- 17 54 31 37.5 175.7 -0.2 -3.9 173 F 1 8377 18 15 17 J1811-2055 17 54 31 37.0 175.1 -0.3 -4.5 -7 1 1 8377 18 15 17 18 16 47 --- 17 56 01 37.0 175.5 -0.3 -4.1 83 F 1 9574 18 16 47 SGR1806-20 17 56 01 37.5 176.2 -0.2 -3.5 -7 1 1 9574 18 16 47 18 19 46 --- 17 59 01 37.6 177.1 -0.2 -2.6 173 F 1 11967 18 19 46 J1811-2055 17 59 01 37.0 176.4 -0.2 -3.3 -7 1 1 11967 18 19 46 18 21 16 --- 18 00 31 37.1 176.8 -0.2 -2.9 83 F 1 13164 18 21 16 SGR1806-20 18 00 31 37.6 177.5 -0.1 -2.2 -7 1 1 13164 18 21 16 18 24 15 --- 18 03 31 37.6 178.4 -0.1 -1.4 173 F 1 15557 18 24 15 J1825-1718 18 03 31 40.4 173.0 -0.4 -6.2 -12 1 1 15557 18 24 15 18 25 45 --- 18 05 01 40.5 173.5 -0.3 -5.8 78 F 1 16754 18 25 45 J1811-2055 18 05 01 37.1 178.1 -0.1 -1.7 -13 1 2 16754 18 25 45 18 27 15 --- 18 06 31 37.1 178.6 -0.1 -1.3 77 R 1 17249 18 27 15 SGR1806-20 18 06 31 37.6 179.3 0.0 -0.6 -7 1 2 17249 18 27 15 18 30 14 --- 18 09 31 37.6 180.2 0.0 0.2 173 R 1 14856 Schedule for VLBA_KP (Code Kp ) Page 3 BK121B - 2nd epoch ToO observations of SGR 1806-20 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. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Thu 6 Jan 2005 Day 6 --- 18 30 14 J1811-2055 18 09 31 37.1 179.5 0.0 -0.5 -7 1 2 14856 18 30 14 18 31 44 --- 18 11 01 37.1 179.9 0.0 -0.1 83 R 1 13659 18 31 44 SGR1806-20 18 11 01 37.6 180.6 0.0 0.6 -7 1 2 13659 18 31 44 18 34 44 --- 18 14 01 37.6 181.5 0.1 1.4 173 R 1 11266 18 34 44 J1811-2055 18 14 01 37.1 180.8 0.0 0.7 -7 1 2 11266 18 34 44 18 36 13 --- 18 15 31 37.1 181.2 0.1 1.1 83 R 1 10069 18 36 13 SGR1806-20 18 15 31 37.6 182.0 0.1 1.8 -7 1 2 10069 18 36 13 18 39 13 --- 18 18 31 37.6 182.8 0.2 2.6 173 R 1 7675 18 39 13 J1811-2055 18 18 31 37.1 182.1 0.1 1.9 -7 1 2 7675 18 39 13 18 40 43 --- 18 20 01 37.1 182.5 0.1 2.3 83 R 1 6479 18 40 43 SGR1806-20 18 20 01 37.6 183.3 0.2 3.0 -7 1 2 6479 18 40 43 18 43 42 --- 18 23 01 37.5 184.2 0.2 3.8 173 R 1 4085 18 43 42 J1825-1718 18 23 01 40.7 179.1 0.0 -0.8 -12 1 2 4085 18 43 42 18 45 12 --- 18 24 31 40.7 179.6 0.0 -0.4 77 R 1 2888 18 45 12 J1811-2055 18 24 31 37.0 183.8 0.2 3.5 -13 1 2 2888 18 45 12 18 46 42 --- 18 26 01 37.0 184.3 0.2 3.9 76 R 1 1692 18 46 42 SGR1806-20 18 26 01 37.5 185.1 0.3 4.6 -7 1 3 1692 18 46 42 18 49 41 --- 18 29 01 37.4 185.9 0.3 5.4 173 F 1 702 18 49 41 J1811-2055 18 29 01 37.0 185.2 0.3 4.7 -7 1 3 702 18 49 41 18 51 11 --- 18 30 31 36.9 185.6 0.3 5.1 83 F 1 1898 18 51 11 SGR1806-20 18 30 31 37.4 186.4 0.4 5.8 -7 1 3 1898 18 51 11 18 54 10 --- 18 33 31 37.3 187.3 0.4 6.6 173 F 1 4292 18 54 10 J1811-2055 18 33 31 36.9 186.5 0.4 5.9 -7 1 3 4292 18 54 10 18 55 40 --- 18 35 01 36.8 186.9 0.4 6.3 83 F 1 5489 18 55 40 SGR1806-20 18 35 01 37.3 187.7 0.4 7.0 -7 1 3 5489 18 55 40 18 58 40 --- 18 38 01 37.2 188.6 0.5 7.7 173 F 1 7882 18 58 40 J1811-2055 18 38 01 36.7 187.8 0.4 7.1 -7 1 3 7882 18 58 40 19 00 09 --- 18 39 31 36.7 188.2 0.5 7.4 83 F 1 9079 Schedule for VLBA_KP (Code Kp ) Page 4 BK121B - 2nd epoch ToO observations of SGR 1806-20 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. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Thu 6 Jan 2005 Day 6 --- 19 00 09 SGR1806-20 18 39 31 37.1 189.0 0.5 8.1 -7 1 3 9079 19 00 09 19 03 09 --- 18 42 31 37.0 189.9 0.6 8.9 173 F 1 11472 19 04 39 J1825-1718 18 44 01 40.5 185.7 0.3 5.1 77 1 3 11472 19 04 39 19 06 08 --- 18 45 31 40.5 186.2 0.3 5.5 90 F 1 12669 19 06 08 J1811-2055 18 45 31 36.5 189.9 0.6 9.0 -14 1 3 12669 19 06 08 19 07 38 --- 18 47 01 36.4 190.4 0.6 9.4 76 F 1 13866 19 07 38 SGR1806-20 18 47 01 36.8 191.2 0.6 10.1 -7 1 3 13866 19 07 38 19 10 38 --- 18 50 01 36.7 192.0 0.7 10.9 173 F 1 16259 19 10 38 J1811-2055 18 50 01 36.3 191.2 0.6 10.2 -7 1 3 16259 19 10 38 19 12 07 --- 18 51 31 36.3 191.6 0.7 10.6 83 F 1 17456 19 12 07 SGR1806-20 18 51 31 36.6 192.5 0.7 11.3 -6 1 4 17456 19 12 07 19 15 07 --- 18 54 31 36.5 193.3 0.8 12.0 173 R 1 15062 19 15 07 J1811-2055 18 54 31 36.1 192.5 0.7 11.3 -6 1 4 15062 19 15 07 19 16 37 --- 18 56 01 36.1 192.9 0.7 11.7 83 R 1 13866 19 16 37 SGR1806-20 18 56 01 36.4 193.8 0.8 12.4 -6 1 4 13866 19 16 37 19 19 36 --- 18 59 01 36.3 194.6 0.8 13.2 173 R 1 11472 19 19 36 J1811-2055 18 59 01 35.9 193.8 0.8 12.5 -6 1 4 11472 19 19 36 19 21 06 --- 19 00 31 35.8 194.2 0.8 12.9 83 R 1 10275 19 21 06 SGR1806-20 19 00 31 36.2 195.0 0.9 13.6 -6 1 4 10275 19 21 06 19 24 05 --- 19 03 31 36.0 195.9 0.9 14.3 173 R 1 7882 19 24 05 J1825-1718 19 03 31 39.9 191.7 0.6 10.4 -14 1 4 7882 19 24 05 19 25 35 --- 19 05 01 39.8 192.2 0.7 10.8 76 R 1 6685 19 25 35 J1811-2055 19 05 01 35.6 195.5 0.9 14.0 -15 1 4 6685 19 25 35 19 27 05 --- 19 06 31 35.5 195.9 0.9 14.4 75 R 1 5489 19 27 05 SGR1806-20 19 06 31 35.8 196.7 1.0 15.1 -6 1 4 5489 19 27 05 19 30 04 --- 19 09 31 35.7 197.5 1.0 15.8 173 R 1 3095 19 30 04 J1811-2055 19 09 31 35.3 196.7 1.0 15.1 -6 1 4 3095 19 30 04 19 31 34 --- 19 11 01 35.2 197.1 1.0 15.5 83 R 1 1898 Schedule for VLBA_KP (Code Kp ) Page 5 BK121B - 2nd epoch ToO observations of SGR 1806-20 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. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Thu 6 Jan 2005 Day 6 --- 19 31 34 SGR1806-20 19 11 01 35.6 198.0 1.0 16.2 -6 1 5 1898 19 31 34 19 34 34 --- 19 14 01 35.4 198.8 1.1 17.0 173 F 1 495 19 34 34 J1811-2055 19 14 01 35.0 197.9 1.0 16.2 -6 1 5 495 19 34 34 19 36 03 --- 19 15 31 34.9 198.3 1.1 16.6 83 F 1 1692 19 36 03 SGR1806-20 19 15 31 35.3 199.2 1.1 17.3 -6 1 5 1692 19 36 03 19 39 03 --- 19 18 31 35.0 200.0 1.2 18.1 173 F 1 4085 19 39 03 J1811-2055 19 18 31 34.7 199.2 1.1 17.3 -6 1 5 4085 19 39 03 19 40 33 --- 19 20 01 34.6 199.6 1.1 17.7 84 F 1 5282 19 40 33 SGR1806-20 19 20 01 34.9 200.4 1.2 18.4 -6 1 5 5282 19 40 33 19 43 32 --- 19 23 01 34.7 201.2 1.2 19.1 173 F 1 7675 19 43 32 J1825-1718 19 23 01 38.9 197.6 1.0 15.6 -14 1 5 7675 19 43 32 19 45 02 --- 19 24 31 38.8 198.1 1.0 16.0 75 F 1 8872 19 45 02 J1811-2055 19 24 31 34.3 200.8 1.2 18.8 -15 1 5 8872 19 45 02 19 46 32 --- 19 26 01 34.2 201.2 1.2 19.2 75 F 1 10069 19 46 32 SGR1806-20 19 26 01 34.5 202.0 1.3 19.9 -6 1 5 10069 19 46 32 19 49 31 --- 19 29 01 34.2 202.8 1.3 20.6 173 F 1 12462 19 49 31 J1811-2055 19 29 01 34.0 202.0 1.3 19.9 -6 1 5 12462 19 49 31 19 51 01 --- 19 30 31 33.8 202.4 1.3 20.2 84 F 1 13659 19 51 01 SGR1806-20 19 30 31 34.1 203.2 1.4 20.9 -6 1 5 13659 19 51 01 19 54 01 --- 19 33 31 33.8 204.0 1.4 21.6 173 F 1 16052 19 54 01 J1811-2055 19 33 31 33.6 203.2 1.4 20.9 -6 1 5 16052 19 54 01 19 55 30 --- 19 35 01 33.5 203.6 1.4 21.3 84 F 1 17249 19 55 30 SGR1806-20 19 35 01 33.7 204.4 1.4 22.0 -6 1 6 17249 19 55 30 19 58 30 --- 19 38 01 33.5 205.2 1.5 22.7 173 R 1 14856 19 58 30 J1811-2055 19 38 01 33.2 204.3 1.4 22.0 -6 1 6 14856 19 58 30 20 00 00 --- 19 39 31 33.1 204.7 1.5 22.3 84 R 1 13659 20 00 00 SGR1806-20 19 39 31 33.3 205.6 1.5 23.0 -6 1 6 13659 20 00 00 20 02 59 --- 19 42 31 33.0 206.4 1.6 23.7 173 R 1 11266 Schedule for VLBA_KP (Code Kp ) Page 6 BK121B - 2nd epoch ToO observations of SGR 1806-20 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. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Thu 6 Jan 2005 Day 6 --- 20 02 59 J1825-1718 19 42 31 37.4 203.2 1.3 20.5 -15 1 6 11266 20 02 59 20 04 29 --- 19 44 01 37.3 203.7 1.3 20.9 75 R 1 10069 20 04 29 J1811-2055 19 44 01 32.7 205.9 1.5 23.4 -15 1 6 10069 20 04 29 20 05 59 --- 19 45 31 32.5 206.3 1.6 23.7 74 R 1 8872 20 05 59 SGR1806-20 19 45 31 32.8 207.1 1.6 24.4 -6 1 6 8872 20 05 59 20 08 58 --- 19 48 31 32.5 207.9 1.7 25.0 173 R 1 6479 20 08 58 J1811-2055 19 48 31 32.2 207.0 1.6 24.4 -6 1 6 6479 20 08 58 20 10 28 --- 19 50 01 32.1 207.4 1.6 24.7 84 R 1 5282 20 10 28 SGR1806-20 19 50 01 32.3 208.3 1.7 25.4 -6 1 6 5282 20 10 28 20 13 27 --- 19 53 01 32.0 209.0 1.7 26.0 173 R 1 2888 20 13 27 J1811-2055 19 53 01 31.8 208.1 1.7 25.4 -6 1 6 2888 20 13 27 20 14 57 --- 19 54 31 31.6 208.5 1.7 25.7 84 R 1 1692 20 14 57 SGR1806-20 19 54 31 31.8 209.4 1.8 26.4 -6 1 7 1692 20 14 57 20 17 57 --- 19 57 31 31.5 210.1 1.8 27.0 173 F 1 702 20 17 57 J1811-2055 19 57 31 31.3 209.2 1.8 26.3 -6 1 7 702 20 17 57 20 19 26 --- 19 59 01 31.2 209.6 1.8 26.7 84 F 1 1898 20 19 26 SGR1806-20 19 59 01 31.4 210.5 1.8 27.3 -6 1 7 1898 20 19 26 20 22 26 --- 20 02 01 31.0 211.2 1.9 28.0 173 F 1 4292 20 24 26 J1825-1718 20 04 01 35.4 209.1 1.6 25.6 105 1 7 4292 20 24 26 20 25 55 --- 20 05 31 35.2 209.5 1.7 26.0 90 F 1 5489 20 25 55 J1811-2055 20 05 31 30.5 211.2 1.9 28.1 -16 1 7 5489 20 25 55 20 27 25 --- 20 07 01 30.3 211.5 1.9 28.4 74 F 1 6685 20 27 25 SGR1806-20 20 07 01 30.5 212.4 2.0 29.0 -6 1 7 6685 20 27 25 20 30 25 --- 20 10 01 30.1 213.1 2.0 29.6 173 F 1 9079 20 30 25 J1811-2055 20 10 01 30.0 212.3 2.0 29.0 -6 1 7 9079 20 30 25 20 31 54 --- 20 11 31 29.8 212.6 2.0 29.3 84 F 1 10275 20 31 54 SGR1806-20 20 11 31 30.0 213.5 2.0 30.0 -6 1 7 10275 20 31 54 20 34 54 --- 20 14 31 29.6 214.2 2.1 30.6 173 F 1 12669 Schedule for VLBA_KP (Code Kp ) Page 7 BK121B - 2nd epoch ToO observations of SGR 1806-20 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. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Thu 6 Jan 2005 Day 6 --- 20 34 54 J1811-2055 20 14 31 29.5 213.3 2.1 29.9 -6 1 7 12669 20 34 54 20 36 24 --- 20 16 01 29.3 213.7 2.1 30.2 84 F 1 13866 20 36 24 SGR1806-20 20 16 01 29.4 214.5 2.1 30.9 -6 1 7 13866 20 36 24 20 39 23 --- 20 19 01 29.1 215.2 2.2 31.5 173 F 1 16259 20 39 23 J1811-2055 20 19 01 28.9 214.3 2.1 30.8 -6 1 7 16259 20 39 23 20 40 53 --- 20 20 31 28.8 214.7 2.2 31.1 84 F 1 17456 20 40 53 SGR1806-20 20 20 31 28.9 215.5 2.2 31.8 -6 1 8 17456 20 40 53 20 43 52 --- 20 23 31 28.5 216.2 2.2 32.3 173 R 1 15062 20 43 52 J1811-2055 20 23 31 28.4 215.4 2.2 31.7 -6 1 8 15062 20 43 52 20 45 22 --- 20 25 01 28.2 215.7 2.2 32.0 84 R 1 13866 20 45 22 SGR1806-20 20 25 01 28.3 216.6 2.3 32.6 -6 1 8 13866 20 45 22 20 48 22 --- 20 28 01 27.9 217.2 2.3 33.2 173 R 1 11472 20 48 22 J1811-2055 20 28 01 27.8 216.4 2.3 32.6 -6 1 8 11472 20 48 22 20 49 51 --- 20 29 31 27.6 216.7 2.3 32.9 84 R 1 10275 20 49 51 SGR1806-20 20 29 31 27.7 217.6 2.3 33.5 -6 1 8 10275 20 49 51 20 52 51 --- 20 32 31 27.4 218.2 2.4 34.1 173 R 1 7882 20 54 51 3C454.3 20 34 31 54.6 108.2 -2.3 -57.1 40 1 8 7882 20 54 51 20 59 50 --- 20 39 31 55.7 109.3 -2.2 -56.5 299 R 1 3893 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: v21cm.set Matches group v20cm_2 in /aps3/sched/catalogs/freq.dat FD filtered above 1760. SC filtered above 1740. Setup group: 1 Station: VLBA Total bit rate: 256 Format: VLBA1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 1.00 Tape speeds: Low density - 266.660 ips, High density - 160.00 ips Time per pass for 17600 ft, High density tapes is: 00:22:00 1st LO= 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 Net SB= U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= L L L L L L L L IF = A C A C A C A C VLBA FE= 20cm omit 20cm omit VLBA Synth= 15.4 2.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 1400.49 1400.49 1408.49 1408.49 1416.49 1416.49 1424.49 1424.49 BBC fr= 999.51 999.51 991.51 991.51 983.51 983.51 975.51 975.51 Bandwd= 8.000 8.000 8.000 8.000 8.000 8.000 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S3 S5 S7 S1 S3 S5 S7 PCALXB2= S2 S4 S6 S8 S2 S4 S6 S8 PCALFR1= 510 510 510 510 6510 6510 6510 6510 PCALFR2= 510 510 510 510 6510 6510 6510 6510 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_auto SOURCE LIST -- BK121B - 2nd epoch ToO observations of SGR 1806-20 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). Source Source position (RA/Dec) (B1950) (J2000) (Date) * SGR1806-20 18 05 40.698500 * 18 08 39.342000 18 08 55.295263 -20 25 11.10024 *-20 24 39.76000 -20 24 44.14657 From catalog imbedded in main SCHED input file. * J1811-2055 18 08 07.489967 * 18 11 06.800000 18 11 22.811594 -20 55 45.49976 *-20 55 03.44400 -20 55 06.81422 From catalog imbedded in main SCHED input file. * J1825-1718 18 22 42.013768 * 18 25 36.532220 18 25 52.098079 -17 20 35.28951 *-17 18 49.84840 -17 18 47.71300 From catalog imbedded in main SCHED input file. J2253+1608 22 51 29.519733 * 22 53 57.747932 22 54 11.286033 2251+158 15 52 54.34806 * 16 08 53.56089 16 10 27.63016 * 3C454.3 /aps3/sched/catalogs/sources.vlba J2253+16 ICRF - Ext.1 Source - 1998 IERS Annual Report 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) SGR1806-20 14.8 J1811-2055 14.2 J1825-1718 12.0 3C454.3 66.7 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