[Message Prev][Message Next][Thread Prev][Thread Next][Message Index][Thread Index]

[vsnet-chart 193] BVRI sequence near Nova SMC 1999-2

     Observers who have archive patrol images of the SMC that include the
recent nova may find the following BVRI data useful for calibration.  These
stars fall within about a degree of the nova location, and will be far more
reliable than the USNO-A values.  Remember that in these extremely crowded
fields the Schmidt plate scans utterly break down, and at least half the USNO-A
detections are spurious, plus the magnitudes themselves are totally bogus in
both A1.0 and A2.0.
     Column 's' is the source of the positions:  A = USNO-A2.0, G = GSC-ACT
(by Bill Gray), S = SkyView position from DSS image.  Most of the data here
are from a paper by Vigneau & Azzopardi (1982 A&AS 50,119), where finder charts
can be found.  The list extends down past V = 15, and for anything fainter
you'll need quite a large telescope (and accompanying image scale) to overcome
the crowding problems.  The list below is extracted from (and is in the format
of) my large file at:

http://ftp.lowell.edu/pub/bas/starcats/loneos.phot.gz

\Brian



Name                  RA  (2000)  Dec    s     GSC       V    B-V   V-R   V-I
[HKS77] SMC 1-12    0 48 51.3  -71 26 30 A             14.97 -0.10
[HKS77] SMC 1-14    0 49 31.7  -71 21 54 A  9138-1741  13.21  0.64
[VA82] I-10         0 49 32.0  -73 01 37 A             14.87  0.37  0.17  0.44
[VA82] I-11         0 49 51.3  -72 55 45 A  9141-7595  11.16  0.00  0.05  0.08
[VA82] I-12         0 49 55.6  -73 00 09 A             14.63 -0.11 -0.00
[VA82] I-13         0 50 06.9  -73 00 10 G  9141-7577  12.55  0.97  0.52  0.95
[VA82] I-14         0 50 33.2  -72 57 44 S             13.17  0.19  0.14  0.32
[VA82] II-1         0 55 47.5  -72 39 30 A             13.27  0.01  0.06  0.17
[VA82] II-2         0 55 55.1  -72 40 31 A  9141-7723  12.02  1.40  0.68  1.27
[VA82] II-3         0 56 58.3  -72 31 18 A  9141-7686  13.42  0.16  0.13  0.27
[VA82] II-4         0 57 00.1  -72 30 10 A             14.90 -0.15 -0.03 -0.04
[VA82] II-5         0 57 23.5  -72 39 56 S             12.83  0.42  0.25  0.50
[VA82] II-6         0 57 27.0  -72 33 14 A             13.98 -0.20 -0.08 -0.15
[VA82] II-7         0 57 29.6  -72 32 24 S             14.64  0.14  0.25 -0.09
[VA82] II-8         0 57 58.2  -72 35 22 A             15.41 -0.20 -0.00
[VA82] II-9         0 58 01.6  -72 41 59 A             14.20 -0.05 -0.03 -0.09
[VA82] II-10        0 58 17.0  -72 30 47 A             15.15  0.08  0.13  0.19
[VA82] II-11        0 58 28.8  -72 31 55 A             15.62 -0.07  0.06
[VA82] II-12        0 58 29.7  -72 41 09 A             14.62 -0.04  0.01  0.07
[VA82] II-13        0 58 32.4  -72 33 28 A  9141-7816  13.64  1.85  0.92  1.72
[VA82] II-14        0 58 38.3  -72 41 42 S             15.26 -0.16 -0.02
[VA82] II-15        0 58 49.2  -72 32 54 A             14.27  1.51  0.75  1.46
[VA82] II-16        0 58 52.0  -72 38 54 A             15.55 -0.14 -0.08 -0.05
[VA82] II-17        0 58 53.5  -72 40 39 A  9141-7845  11.81  1.61  0.85  1.72
[VA82] II-18        0 58 55.7  -72 32 08 A             12.77 -0.11 -0.03 -0.09
[VA82] II-19        0 58 59.3  -72 44 34 A             14.20 -0.16 -0.04 -0.06

VSNET Home Page

Return to Daisaku Nogami

vsnet-adm@kusastro.kyoto-u.ac.jp