QUEST supernova magnitudes: detected
at Berkeley, measured at Yale and Caltech: 2004 May run.
Berkeley
detection list
Berkeley
detection images
List of QUEST x,y coordinates for
reference and followup scans
Lists of QUEST field stars
for each supernova candidate
format is ID, J2000 RA and Dec, R, R_err, I, I_err, B, B_err, U, U_err
note: systematic calibration
errors ~0.1 magnitude
before, after, and difference images:
s2004-017
s2004-018
Charlie's plot of R magnitude vs redshift
Also see the beautiful pictures on Avishay's
webpage
Notes:
(1) All fluxes are the difference in the measured flux between the
reference and detection scans inside an aperture radius of 1.5 pixels.
This was then corrected to 1.0 FWHM of the PSF in the detection
scan using an aperture correction determine from field stars. A
correction was also made for the extinction of the detection
scanrelative to the reference scan. In all but a few cases the
extinction correction was small (<0.02 mags). The exceptions were:
s2004-022: there was a large correction (-2.3 mags in B) on both
detection nights (20040518 and 20040520) relative to the reference scan
(20040421). This indicates that the depth of the reference scan
was significantly diminished by clouds.
The night of 20040524: there was ~0.1 to 0.2 mags of extinctions for
all detections.
(2) In the table below, the magnitudes are Johnson/Cousins calibrated
against Sloan standards after converting from Sloan to Johnson
using Sloan's published conversion terms. For s2004-017 and s2004-018
these are the actual calibrations. For the other supernovae, the
calibrations had to be assumed because no calibration information was
available for the CCDs used for the detection (columns 7 and 12). The
assumed zero-points corrections (measured for column 4) are 2.4, 1.9 ,
2.4, and -1.7 mags for R, I, B, and U respectively (added to
25.0-2.5*log(flux in adu)).
(3) Where the measured flux was negative or zero, "nan" appears in the
table. If the object was not observed in a particular filter, then "-"
appears.
(4) s2004-019 had no measurable flux in R, and s2004-020, s2004-21, and
s2004-022 were barely measureable.
(5) All measurements on 20040530 are suspect owing to bright moonlight
and saturated images
Object
Date R_instr R_err I_instr
I_err B_instr B_err U_instr U_err
_________________________________________________________________________________
s2004-017 20040518
19.277 0.062 -
- 19.742
0.037 18.226 0.333
s2004-017 20040520
19.020 0.047 -
- 19.630
0.033 18.387 0.345
s2004-017 20040520
18.947 0.055 -
- 19.666
0.051 nan nan
s2004-017 20040528
18.898 0.048 -
- 19.676
0.043 18.988 0.616
reference night 20040423:
s2004-018 20040518
18.725 0.043 -
-
-
-
- -
s2004-018 20040520
18.594 0.037 -
-
-
-
- -
s2004-018 20040524
19.378 0.083 -
-
-
-
- -
s2004-018 20040524
19.119 0.068 -
-
-
-
- -
reference night 20040421:
s2004-018 20040518
18.645 0.039 18.448
0.044 21.281 0.120
19.425 0.788
s2004-018 20040520
18.528 0.034 18.305
0.039 21.201 0.111
nan nan
s2004-018 20040524
19.216 0.070 18.835
0.084 nan
nan
nan nan
s2004-018 20040528
19.002 0.060 18.762
0.058 22.329 0.359
19.456 0.905
s2004-019 20040518
nan nan
-
-
-
-
- -
s2004-019 20040520
nan nan
-
-
-
-
- -
s2004-019 20040524
nan nan
-
-
-
-
- -
s2004-019 20040528
21.201 0.270 -
-
-
-
- -
s2004-020 20040518
nan nan
-
-
-
-
- -
s2004-020 20040520
22.814 0.888 -
-
-
-
- -
s2004-020 20040524
21.659 0.481 -
-
-
-
- -
s2004-020 20040528
20.675 0.174 -
-
-
-
- -
s2004-021 20040518
21.758 0.480 -
-
-
-
- -
s2004-021 20040520
20.545 0.167 -
-
-
-
- -
s2004-021 20040524
nan nan
-
-
-
-
- -
s2004-021 20040528
21.328 0.382 -
-
-
-
- -
s2004-022 20040518
nan nan
-
-
nan nan
20.163 0.659
s2004-022 20040520
-
-
-
-
-
- 20.631 0.982
s2004-022 20040528
21.093 0.192 -
-
nan nan
nan nan
asteroid:
s2004-023 20040518
21.463 0.493 -
-
nan nan
nan nan
s2004-023 20040519
nan nan 24.425
2.918 nan
nan -
-
s2004-023 20040520
19.091 0.072 -
- 21.164
0.152 nan
nan
s2004-023 20040525
23.467 1.763 20.899
0.447 25.024 1.974
-
-
s2004-051 20040518
26.065 3.540 -
-
-
-
- -
s2004-051 20040520
nan nan
-
-
-
-
- -
s2004-051 20040524
nan nan
-
-
-
-
- -
s2004-051 20040528
21.209 0.262 -
-
-
-
- -
s2004-052 20040521
17.387 0.013 17.369
0.028 -
- 17.575 0.106
s2004-052 20040525
17.232 0.009 17.304
0.018 -
- 17.450 0.064
s2004-052 20040527
17.292 0.014 17.705
0.051 -
- 17.499 0.106
s2004-052 20040530
17.483 0.019 17.732
0.040 -
- 17.815 0.075
s2004-053 20040519 18.285 0.043
19.556 0.093 19.915
0.025 19.286 0.219
s2004-053 20040525 18.634 0.028
19.583 0.097 20.352
0.106 19.894 0.413
s2004-053 20040527 18.610 0.062
20.879 1.919 20.621
0.626 nan nan
s2004-054 20040519 15.843 0.603
-
-
-
-
- -
s2004-054 20040521
22.331 2.432
-
-
-
-
- -
s2004-054 20040525
22.331 2.432
-
-
-
-
- -
s2004-054 20040527
nan nan
-
-
-
-
- -
s2004-054 20040530
17.986 0.682
-
-
-
-
- -
s2004-055 20040519
19.792 0.798
-
- 22.962
0.579 18.323 0.324
s2004-055 20040521
20.805 0.214
-
- 22.653
0.348 nan nan
s2004-055 20040525
20.638 0.118
-
- 22.541
0.186 nan nan
s2004-055 20040527
20.332 0.173
-
- 22.523
1.037 nan nan
s2004-055 20040530
20.614 0.235
-
- 22.906
1.555 nan nan
s2004-056 20040519
18.447 0.025
-
- 20.448
0.034 19.760 0.428
s2004-056 20040525
18.459 0.024
-
- 20.892
0.256 nan nan
s2004-056 20040530
saturated by moonlight
s2004-057 20040521 19.601 0.096
20.522 0.367 20.653
0.097 21.047 2.131
s2004-057 20040525 19.655 0.064
19.808 0.136 21.081
0.078 nan nan
s2004-057 20040530 19.882 0.187
19.867 0.218 21.227
0.387 nan nan
s2004-058 20040519 18.239 0.650
16.937 0.714 19.981
0.677 19.684 0.697
s2004-058 20040521 nan
nan nan
nan nan
nan 21.529 1.383
s2004-058 20040525 22.270 2.318
19.434 1.554 22.650
1.582 21.633 1.144
s2004-058 20040527 nan
nan nan
nan nan
nan 21.529 1.383
s2004-058 20040530 17.076 0.550
15.525 0.618 16.100
0.573 18.167 0.541
(large extinction correction of 20040530)
s2004-059 20040521 nan
nan nan
nan
-
- 19.996 0.488
s2004-059 20040525 22.237 2.483
19.667 1.655
-
- 20.346 0.452
s2004-059 20040527 nan
nan nan
nan
-
- 20.366 0.774
s2004-059 20040530 17.359 0.632
16.802 0.628
-
- 18.226 0.499
s2004-060 20040521 21.044 0.242
20.912 0.566 25.898
2.644 20.541 1.203
s2004-060 20040525 20.325 0.094
19.993 0.186 22.121
0.228 19.598 0.321
s2004-060 20040527 20.228 0.151
19.249 0.975 22.829
1.514 19.379 0.578
s2004-060 20040530 19.938 0.146
20.583 1.816 nan
nan 19.562 0.509
s2004-061 20040521 nan
nan
-
-
-
-
- -
s2004-061 20040525 20.450 1.024
-
-
-
-
- -
s2004-061 20040527 -
-
-
-
-
-
- -
s2004-061 20040530 17.484 0.615
-
-
-
-
- -
s2004-062 20040518 21.367 0.299
nan nan
nan nan
nan nan
s2004-062 20040520 21.930 0.468
nan nan
nan nan
nan nan
s2004-062 20040522 21.941 0.455
nan nan
nan nan
nan nan
s2004-062 20040528 nan
nan nan
nan nan
nan nan nan
s2004-063 20040521 nan
nan nan
nan nan
nan nan nan
s2004-063 20040525 21.063 1.586
20.512 2.259 22.715
1.118 nan nan
s2004-063 20040527 nan
nan nan
nan nan
nan nan nan
s2004-063 20040530 17.506 0.589
18.119 0.940 18.554
0.585 18.619 0.515
s2004-064 20040519 nan
nan 19.617
0.747 21.533 0.632
19.352 0.821
s2004-064 20040525 nan
nan 19.465
0.161 22.860 0.380
nan nan
s2004-064 20040527 nan
nan nan
nan nan
nan 20.259 0.749
s2004-064 20040530 nan
nan 19.991
0.398 21.427 0.783
20.096 0.412
** large extinction correction on 20040519 and 20040527 **
** reference image is on bad column in R-band **
s2004-065 20040519 nan
nan nan
nan nan
nan nan nan
s2004-065 20040525 nan
nan nan
nan 19.988 0.900
nan nan
s2004-066 20040521 nan
nan
-
-
-
-
- -
s2004-066 20040525 20.474 1.172
-
-
-
-
- -
s2004-066 20040527 nan
nan
-
-
-
-
- -
s2004-066 20040530 17.309 0.622
-
-
-
-
- -
s2004-067 20040519 nan
nan nan
nan nan
nan nan nan
s2004-067 20040525 nan
nan 22.504 1.539
nan nan 21.248
1.358
s2004-068 20040519 22.433 0.736 nan
nan nan
nan 20.224 0.697
s2004-068 20040525 nan nan
21.347 0.720 23.222 0.810
20.065 0.734
s2004-069 20040519 nan
nan -
-
-
-
- -
s2004-069 20040525 nan
nan -
-
-
-
- -
_________________________________________________________________________________
David Rabinowitz
2004 Jun 22