Following on the discussion about the RS Oph comp stars---where Otero complained there was no photoelectric sequence and Morel responded that there was an extensive dataset published with some RASNZ charts---I have keyed-in the data for the first three stars in that series from the RASNZ "Charts for southern variables, series 13". Since there are a lot of stars involved, having the data more readily available would be valuable. HOWEVER, it appears the results are NOT RELIABLE, and it was easy to find stars where the V magnitudes were clearly in error by 0.1 - 0.3 mag. The B-V colors seem to be generally okay. For T CrB, some stars have observations by Arlo Landolt, presumably from Kitt Peak, which should be more reliable. The five brightest stars from the RS Oph sequence should be sufficient to show the problem: ID Name V B-V source 6 HD 159358 5.37 0.02 Webbink 5.56 0.01 Crawford, 1963ApJ...137..530 5.55 0.02 Corben, 1971MNSSA..30...37C 162 HD 173638 5.81 0.66 Webbink (double) 5.73 0.58 Breger, 1968AJ.....73...84B 5.71 0.61 Croben, 1971MNSSA..30...37C 5.71 0.59 Fernie, 1983ApJS...52....7F 5.70 0.60 Eggen, 1969RGOB..137..165E 109 HD 162713 6.79 0.99 Webbink 6.84 1.03 Kornilov, 1991TrSht..63....4K 6.84 0.99 Tycho-2, Bessell correction 116 HD 162834 6.80 1.23 Webbink 6.86 1.27 Schmidt, 1971ApJ...165..335S 8.86 1.30 Kornilov, 1991TrSht..63....4K 154 HD 172654 6.92 1.31 Webbink 6.71 1.23 Kornilov, 1991TrSht..63....4K 6.71 1.18 Tycho-2, Bessell correction This sort of thing persists throughout the list for fainter stars. Some are more-or-less okay, while others are out by some tenths in V. The data were taken with the Prairie Obseratory 1-m telescope located (at the time) in Illinois, and the relatively poor photometric quality of the site is probably responsible for the problematic data. The lists below show only apparently new data appearing the chart series publication for T CrB, V616 Mon, and RS Oph. I have sorted them in order of decreasing brightness, but the running numbers in the left-hand column sort in RA order. The coordinates are from TRC, GSC-ACT, and elsewhere via SIMBAD. A few of the faintest stars in the V616 Mon sequence have positions from GSC-2.2 or 2MASS. For V616 Mon there is cooroborating VRI photometry for some stars from the TASS MkIII system, though probably the ASAS3 data also include this area. I think Sebastian Otero found some differences with ASAS3 for the RS Oph region---where there are discrepancies for uncrowded stars, it's probably the RASNZ chart values that are in error. The two other fields covered in this batch (V841 Oph and WZ Sge) presumably have similar problems, so I will not bother keying-in the tables. The bottom line here is to avoid this data. \Brian ------------------------------------------------------------------------------- Charts for southern variables, series 13 Bateson F.M., Morel M., Sumner B., and Winnett R. BV observations by Webbink et al. (Univ of Illinois, 1-m Prairie Obs) UBV observations by Landolt (KPNO?) T CrB ID Name RA (J2000) Dec V B-V U-B remarks 83 HD 148283 16 25 24.2 +37 23 39 5.55 0.18 11 HD 139225 15 36 29.2 +16 07 09 6.04 0.32 12 HD 139389 15 36 53.4 +29 59 28 6.48 0.43 74 HD 145457 16 10 03.9 +26 44 34 6.58 0.97 16 HD 141352 15 47 40.8 +28 28 10 7.39 0.51 54 HD 143514 15 59 58.0 +21 37 19 7.57 1.38 67 HD 144004 16 02 38.4 +26 36 43 7.67 0.45 52 HD 143455 15 59 29.0 +25 26 05 7.82 0.80 data in error 59 HD 143707 16 01 03.9 +26 10 21 7.88 0.40 0.02 Landolt, double 28 HD 142898 15 56 03.5 +27 03 05 8.02 1.05 42 HD 143272 15 58 34.9 +26 32 35 8.18 1.01 26 HD 142743 15 55 12.4 +26 29 11 8.29 0.43 27 HD 142762 15 55 21.1 +26 00 32 8.39 1.17 63 HD 143808 16 01 28.6 +26 24 17 8.42 0.50 41 HD 143271 15 58 30.5 +26 51 11 8.54 0.81 22 HD 142454 15 53 43.3 +26 39 33 8.87 1.11 69 HD 144148 16 03 25.8 +26 25 00 8.91 0.59 25 BD+25 2991 15 54 57.3 +24 36 09 9.06 1.48 21 HD 142419 15 53 38.9 +25 47 15 9.15 1.66 YZ CrB 46 HD 143329 15 58 50.7 +26 39 48 9.21 0.91 36 HD 143161 15 57 54.5 +25 45 30 9.41 1.48 47 BD+25 3005 15 58 58.1 +24 37 17 9.50 2.20 data in error 68 BD+26 2773 16 02 46.1 +25 48 17 9.52 1.16 20 HD 142375 15 53 23.8 +26 18 21 9.53 1.00 58 BD+25 3012 16 00 40.9 +25 23 13 9.53 0.69 23 HD 142552 15 54 11.5 +29 25 13 9.60 0.90 49 BD+25 3006 15 59 01.3 +25 02 10 9.70 0.52 78 BD+29 2802 16 16 25.5 +29 28 33 9.75 0.90 62 BD+26 2768 16 01 29.1 +25 49 39 9.78 0.40 40 HD 143256 15 58 28.4 +25 56 31 9.82 1.04 0.82 Landolt 38 HD 143211 15 58 10.5 +26 14 30 9.86 0.86 44 BD+25 3004 15 58 50.8 +25 12 34 9.91 0.66 31 HD 143128 15 57 40.0 +26 06 19 10.16 0.56 65 BD+26 2770 16 01 35.0 +25 51 10 10.52 1.50 39 BD+25 3001 15 58 17.1 +25 31 46 10.55 0.72 51 BD+26 2764 15 59 26.4 +26 08 47 10.55 0.53 0.05 Landolt 56 BD+26 2766a 16 00 17.5 +25 43 20 10.66 0.61 35 BD+26 2759 15 57 54.0 +26 00 04 10.70 1.46 34 GSC 2037-1130 15 57 51.0 +26 15 51 10.73 0.59 0.06 Landolt 32 GSC 2037-1417 15 57 41.4 +26 30 50 10.86 0.81 55 BD+26 2766 16 00 16.0 +25 43 54 10.94 -0.17 33 BD+26 2757 15 57 45.4 +26 28 11 10.99 0.52 45 GSC 2037-1228 15 58 51.2 +25 50 05 11.17 0.62 0.17 Landolt 60 GSC 2038-1200 16 01 07.7 +26 09 59 11.27 0.62 0.13 Landolt 37 GSC 2037-1284 15 57 58.4 +25 38 17 11.67 0.58 0.02 Landolt 57 GSC 2038-0977 16 00 36.3 +26 04 40 12.08 0.55 0.04 Landolt V616 Mon ID Name RA (J2000) Dec V B-V U-B remarks 102 HD 44948 6 24 33.9 -01 25 06 6.64 -0.09 double 11 HD 44354 6 21 20.3 -01 13 15 7.52 -0.07 14 HD 44420 6 21 43.5 -00 32 21 7.55 0.66 29 HD 44605 6 22 29.4 -02 42 35 7.74 1.21 98 HD 44872 6 24 08.4 -01 28 25 8.36 0.28 22 HD 44545 6 22 16.9 -01 29 38 8.37 0.04 17 HD 44499 6 22 07.0 -00 34 40 8.54 1.35 86 HD 44719 6 23 10.1 -01 36 29 8.57 0.87 16 HD 44501 6 22 01.2 -02 01 46 8.60 0.15 double 13 HD 44438 6 21 42.8 -00 45 55 8.92 0.51 84 HD 44731 6 23 08.1 -02 39 03 8.97 0.24 36 HD 291620 6 22 35.1 -02 05 48 9.13 0.96 92 HD 291638 6 23 48.9 -00 39 40 9.31 1.66 95 HD 294997 6 25 06.9 -02 22 43 9.47 1.10 101 HD 291637 6 24 34.4 -00 37 43 9.54 1.15 8 HD 44334 6 21 14.1 -01 23 01 9.59 0.26 20 HD 291591 6 22 17.2 -00 07 55 9.70 1.27 7 HD 291532 6 20 37.6 -00 20 01 9.87 1.27 10 HD 291592 6 21 17.3 -00 11 22 10.17 1.31 9 HD 291602 6 21 16.0 -00 43 05 10.30 0.34 89 HD 294931 6 23 12.2 -02 30 35 10.35 0.56 99 HD 291631 6 24 18.9 -00 17 07 10.43 0.29 96 HD 291636 6 24 05.2 -00 32 40 10.55 0.30 73 HD 291622 6 22 55.4 -02 09 50 10.96 0.31 79 GSC 4785-1830 6 23 02.1 -00 14 33 10.96 0.67 70 GSC 4789-0322 6 22 54.2 -02 07 54 11.23 0.14 28 GSC 4784-0105 6 22 29.6 -00 07 53 11.25 1.24 37 GSC 4789-0278 6 22 35.2 -02 07 24 11.27 1.33 39 GSC 4785-0299 6 22 37.9 -00 32 13 11.39 0.52 23 GSC 4784-2239 6 22 18.8 -00 16 42 11.47 0.32 74 GSC 4785-1150 6 22 59.2 -00 28 07 11.50 1.13 32 GSC 4785-0060 6 22 35.6 -00 24 38 11.66 1.88 25 GSC 4788-0253 6 22 20.6 -02 15 29 11.75 0.54 15 GSC 4784-1316 6 21 59.2 -00 10 45 12.48 1.79 42 GSC 4789-1479 6 22 37.0 -02 09 21 12.52 0.44 77 GSC 4789-1475 6 22 59.4 -02 12 40 12.79 0.57 19 GSC 4788-0871 6 22 14.5 -02 12 11 12.81 0.49 59 GSC 4789-1497 6 22 45.5 -02 10 07 12.97 0.67 80 GSC 4785-0571 6 23 03.6 -00 19 23 13.08 1.41 47 GSC 4789-1281 6 22 39.3 -02 16 15 13.11 0.39 52 GSC 4785-0153 6 22 43.5 -00 24 15 13.69 0.69 55 GSC 4789-0446 6 22 43.4 -02 10 05 13.82 0.45 34 6 22 36.6 -00 23 34 14.03 2.16 38 6 22 38.2 -00 24 14 14.21 0.87 61 6 22 46.6 -02 11 23 14.63 0.60 RS Oph ID Name RA (J2000) Dec V B-V U-B remarks 6 HD 159358 17 34 46.4 -11 14 31 5.37 0.02 -0.19 162 HD 173638 18 46 43.3 -10 07 30 5.81 0.66 double 109 HD 162713 17 52 37.1 -05 15 43 6.79 0.99 116 HD 162834 17 53 15.4 -05 55 44 6.80 1.23 154 HD 172654 18 41 34.5 -03 07 07 6.92 1.31 15 HD 161131 17 44 00.8 -05 55 46 7.13 1.02 160 HD 173278 18 44 40.8 -06 32 10 7.14 2.12 172 HD 176076 18 58 47.3 -05 38 05 7.22 0.18 25 HD 161555 17 46 31.8 -07 59 08 7.24 0.65 163 HD 173693 18 46 54.7 -07 34 45 7.25 0.28 141 HD 163976 17 59 04.7 -05 02 54 7.30 0.58 156 HD 172768 18 42 17.9 -07 20 14 7.34 1.95 V453 Sct 170 HD 174916 18 53 11.3 -04 43 55 7.42 0.42 169 HD 174796 18 52 25.7 -03 43 32 7.54 2.10 129 HD 163422 17 56 15.0 -04 34 35 7.56 0.08 19 HD 161203 17 44 34.7 -07 24 29 7.91 0.67 90 HD 162488 17 51 36.5 -06 51 48 7.92 1.63 153 HD 172508 18 40 47.4 -04 29 47 7.99 2.03 138 HD 163568 17 57 10.0 -08 04 08 8.06 0.52 81 HD 162324 17 50 45.5 -05 19 49 8.10 0.30 29 HD 161639 17 46 58.0 -06 12 33 8.14 0.64 114 HD 162755 17 52 52.3 -05 21 04 8.14 1.21 127 HD 163366 17 56 08.6 -06 40 20 8.21 0.42 28 HD 161607 17 46 50.6 -06 51 45 8.23 1.66 94 HD 162506 17 51 42.4 -06 15 36 8.33 0.36 18 HD 161204 17 44 34.4 -07 51 22 8.36 2.19 NSV 9615 131 HD 163423 17 56 19.8 -05 18 54 8.43 1.45 102 HD 162597 17 52 03.6 -04 46 37 8.46 0.34 136 HD 163566 17 57 05.7 -06 41 24 8.64 0.23 123 HD 163176 17 55 09.8 -07 28 19 8.68 0.26 33 HD 161663 17 47 10.0 -08 04 22 8.69 0.55 14 HD 161099 17 44 00.2 -08 01 33 8.70 0.64 108 HD 162693 17 52 34.6 -05 19 08 8.71 0.60 double 135 HD 163550 17 56 58.6 -06 40 45 8.75 0.54 132 HD 163446 17 56 28.3 -06 33 06 8.79 1.26 5 HD 159334 17 34 22.0 -04 59 19 8.87 0.51 105 HD 162653 17 52 18.5 -05 25 51 8.88 0.37 137 HD 163567 17 57 07.3 -07 16 27 8.97 1.33 37 HD 161753 17 47 37.6 -06 33 57 8.99 0.89 double 126 HD 163289 17 55 34.6 -05 03 25 9.10 0.53 double 75 HD 162263 17 50 29.8 -07 16 55 9.35 0.67 17 HD 161202 17 44 30.3 -06 37 48 9.36 0.82 139 HD 163735 17 57 54.0 -05 41 10 9.41 0.62 133 HD 163511 17 56 50.7 -07 43 16 9.48 0.59 16 HD 161166 17 44 16.5 -06 31 39 9.50 0.63 double 84 HD 162369 17 51 00.7 -06 53 43 9.55 0.52 106 HD 162672 17 52 27.3 -05 43 40 9.65 0.56 35 BD-06 4650 17 47 17.0 -06 57 31 9.75 2.49 36 HD 161736 17 47 27.5 -05 03 02 9.75 1.21 103 HD 162582 17 52 06.3 -06 24 29 9.75 0.41 128 HD 163387 17 56 14.8 -07 23 17 9.75 0.53 44 HD 161924 17 48 35.6 -06 42 47 9.77 0.59 88 HD 162449 17 51 24.5 -06 53 05 9.77 0.56 20 BD-04 4341 17 44 55.2 -04 57 00 9.79 0.68 57 HD 162060 17 49 28.7 -08 49 24 9.79 0.48 7 HD 159629 17 35 52.7 -04 57 09 9.89 0.67 119 HD 162938 17 53 51.6 -05 46 15 9.93 0.55 104 HD 162598 17 52 16.6 -07 33 37 9.94 1.14 95 HD 162531 17 51 45.6 -05 37 25 9.96 0.50 93 BD-07 4511 17 51 43.0 -07 30 15 9.97 1.76 21 HD 161356 17 45 25.5 -07 13 35 10.01 0.58 121 BD-06 4674 17 54 17.2 -06 49 42 10.02 1.60 11 BD-04 4333 17 42 43.6 -04 59 24 10.03 0.78 30 HD 161640 17 47 05.3 -07 57 27 10.03 0.63 23 BD-05 4495 17 46 18.8 -05 44 36 10.09 0.76 124 HD 163187 17 55 18.3 -08 00 13 10.14 0.60 24 BD-06 4646 17 46 20.7 -06 50 05 10.17 1.62 120 HD 162995 17 54 08.6 -05 50 43 10.17 0.62 86 HD 162407 17 51 09.0 -08 19 53 10.21 0.74 26 HD 161574 17 46 39.4 -08 01 25 10.25 0.75 79 HD 162283 17 50 34.0 -06 03 01 10.29 1.48 99 BD-05 4512 17 51 52.7 -05 31 46 10.39 0.66 125 HD 163222 17 55 26.2 -06 41 54 10.39 0.60 32 BD-07 4502 17 47 05.8 -07 35 00 10.41 2.20 130 HD 163404 17 56 21.2 -07 02 26 10.41 0.48 34 BD-06 4649 17 47 09.9 -06 16 49 10.43 0.82 117 BD-06 4673 17 53 43.3 -06 11 32 10.44 2.05 46 BD-06 4655 17 48 42.1 -06 41 12 10.50 0.64 54 BD-06 4657 17 49 18.7 -06 40 17 10.50 1.61 78 BD-06 4662 17 50 32.9 -06 19 51 10.66 0.78 43 BD-05 4502 17 48 23.8 -05 54 35 10.68 0.65 22 BD-06 4645 17 46 18.3 -06 37 45 10.80 2.17 41 BD-07 4504 17 48 11.5 -07 05 24 10.80 1.79 100 BD-07 4512 17 52 00.0 -07 18 13 10.80 0.89 27 BD-07 4499 17 46 49.4 -07 30 01 10.83 0.98 38 BD-07 4503 17 47 41.2 -07 17 02 10.83 0.60 58 BD-06 4659 17 49 34.6 -06 55 39 10.84 0.67 98 GSC 5094-0425 17 51 52.1 -06 22 57 10.88 1.58 82 GSC 5094-0319 17 50 50.7 -06 17 52 10.91 0.86 47 BD-06 4656 17 48 54.1 -06 09 28 10.96 0.94 45 BD-06 4654 17 48 40.0 -06 29 19 11.00 0.76 52 BD-05 4504 17 49 15.5 -05 57 49 11.01 0.78 73 BD-05 4507 17 50 13.8 -05 56 48 11.02 1.49 97 BD-06 4670 17 51 50.7 -06 24 32 11.04 0.71 113 GSC 5095-0076 17 52 43.3 -05 55 07 11.07 0.57 31 BD-07 4501 17 47 05.2 -07 22 46 11.11 0.73 101 GSC 5094-0053 17 52 03.4 -06 01 56 11.13 0.89 39 BD-06 4652 17 48 03.2 -06 17 30 11.14 2.02 50 BD-07 4507 17 49 11.6 -07 18 15 11.14 0.82 91 BD-06 4668 17 51 37.8 -06 02 49 11.17 0.84 74 GSC 5094-0725 17 50 24.6 -06 50 07 11.25 1.73 55 BD-06 4658 17 49 24.6 -06 37 12 11.28 0.91 85 BD-06 4665 17 51 05.7 -06 25 03 11.29 0.68 110 BD-05 4518 17 52 37.8 -05 44 52 11.33 0.74 42 BD-07 4505 17 48 22.2 -07 23 10 11.39 1.58 118 BD-07 4519 17 53 45.5 -07 14 21 11.54 0.72 70 GSC 5094-0537 17 50 11.6 -06 31 39 11.62 0.77 64 GSC 5094-0049 17 49 53.2 -06 18 27 11.65 1.63 80 GSC 5094-0671 17 50 37.7 -06 29 44 11.65 2.14 96 GSC 5094-0439 17 51 47.8 -06 13 56 11.75 1.99 89 GSC 5094-0539 17 51 35.3 -06 28 40 11.83 1.71 49 GSC 5094-0477 17 49 05.2 -06 29 47 11.86 0.88 60 GSC 5094-0131 17 49 40.2 -06 16 34 11.92 0.75 48 BD-07 4506 17 48 58.6 -07 30 13 12.03 0.84 76 GSC 5094-0310 17 50 32.0 -06 39 07 12.07 0.95 68 GSC 5094-0769 17 50 08.7 -06 59 36 12.08 0.82 87 GSC 5094-0385 17 51 15.6 -06 14 53 12.11 0.86 53 GSC 5094-0405 17 49 16.8 -06 56 41 12.31 1.12 92 GSC 5094-0709 17 51 38.4 -06 41 33 12.34 0.73 51 GSC 5094-0158 17 49 11.4 -06 38 10 12.35 1.54 77 GSC 5094-0068 17 50 33.9 -06 59 01 12.61 0.56 83 GSC 5094-0195 17 50 52.7 -06 35 13 12.87 2.16 63 GSC 5094-0064 17 49 51.7 -06 38 57 12.96 0.92 59 GSC 5094-0130 17 49 38.6 -06 17 24 13.26 1.17 66 GSC 5094-0650 17 50 06.3 -06 43 50 13.34 1.16 65 GSC 5094-0678 17 50 03.4 -06 40 46 13.52 1.69 69 GSC 5094-0321 17 50 09.4 -06 33 46 13.53 1.78 67 GSC 5094-0496 17 50 07.5 -06 40 19 13.75 1.00 61 GSC 5094-0479 17 49 42.2 -06 40 50 13.78 1.93
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