srclist overlap message for exposure 1 of trigger 1055000
uvot_overlap.pl vrs. 2010-12-20b fem started at 210612d13h27m42s493438usUT
The observation of trigger 1055000 started 2021-06-12T13:24:27.8
Examining file 1055000_g1374_uvot_sky_srclist.fits
The exposure ID is 645197067
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (236.7627,-47.6857) with a roll angle of 226.9
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (236.7720,-47.6820) with a radius of 3.000 arc min
This is 0.438 arc min from the center of the uvot region
The area of the BAT error circle is 28.27 sq. arc min
The UVOT/BAT overlap is 28.27 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (236.7907,-47.6693) with a radius of 0.080 arc min
This is 1.501 arc min from the center of the uvot region
The area of the XRT error circle is 0.020 sq. arc min
The UVOT/XRT overlap is 0.020 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1055000
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210612d13h27m46s512056usUT
Observation start time is 2021-06-12T13:24:27.8
Examining file 1055000_g1374_uvot_catalog_srclist.fits
The exposure ID is 645197067
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 1055000_g1374
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 1055000_g1374 has mag 18.80
Aspect correction adds -0.00353 degrees (-0.848 sec of time = -8.56 arc sec) to RA
Aspect correction adds -0.00016 degrees (-0.59 arcsec) to Dec
Total aspect correction is 8.58 arcsec
Star catalogs centered at 236.7625 , -47.6879 with radius 6.18 arc min.
n_usno: 4386 n_gsc: 0
*** WARNING -- bright star catalog has 16 entries brighter than 12 mag
The brightest has mag 8.36512
RA DEC Mag Color
bright star 0: 236.75046 (15:47:00.11) -47.64616 (-47:38:46.2) 11.84 USNO-R
bright star 1: 236.76809 (15:47:04.34) -47.64222 (-47:38:32.0) 11.75 USNO-R
bright star 2: 236.79118 (15:47:09.88) -47.64294 (-47:38:34.6) 10.73 USNO-R
bright star 3: 236.71790 (15:46:52.30) -47.64790 (-47:38:52.4) 8.37 USNO-V
bright star 4: 236.81649 (15:47:15.96) -47.72362 (-47:43:25.0) 11.95 USNO-V
bright star 5: 236.73502 (15:46:56.40) -47.73692 (-47:44:12.9) 11.31 USNO-V
bright star 6: 236.83299 (15:47:19.92) -47.72138 (-47:43:17.0) 10.60 USNO-R
bright star 7: 236.68306 (15:46:43.93) -47.65289 (-47:39:10.4) 9.13 USNO-R
bright star 8: 236.66131 (15:46:38.71) -47.73516 (-47:44:06.6) 11.65 USNO-V
bright star 9: 236.67819 (15:46:42.77) -47.62352 (-47:37:24.7) 11.18 USNO-R
bright star 10: 236.73843 (15:46:57.22) -47.77761 (-47:46:39.4) 10.80 USNO-V
bright star 11: 236.73631 (15:46:56.71) -47.77748 (-47:46:38.9) 10.76 USNO-V
bright star 12: 236.73799 (15:46:57.12) -47.77868 (-47:46:43.2) 11.27 USNO-B
bright star 13: 236.74050 (15:46:57.72) -47.78350 (-47:47:00.6) 10.53 USNO-V
bright star 14: 236.90187 (15:47:36.45) -47.65819 (-47:39:29.5) 11.51 USNO-V
bright star 15: 236.80255 (15:47:12.61) -47.78638 (-47:47:11.0) 11.26 USNO-V
Mean distance difference (CAT_DELTA) for 180 matched entries is 0.838" for 1055000_g1374
Mean and std. dev of mag. difference (MAG_DELTA) are 1.970 and 0.765 for 1055000_g1374
Found 34 entries without IDs and 9 entries that are acceptable afterglow candidates for 1055000_g1374.
Acceptable entries have no ID, XRT distances < 12", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
17 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=236.7720 (15:47:05.28) DEC=-47.6820 (-47:40:55.2)
XRT distances are from RA=236.7907 (15:47:09.77) DEC=-47.6693 (-47:40:09.5)
-----------------
Entry 5 in the list of sources is a candidate afterglow for 1055000_g1374 with 3x3 stamp
ra=236.81235 (15:47:14.96) dec=-47.67054 (-47:40:13.9) +/- 1.1" mag=17.20+/-0.35
dist=52.7 REFID=36
*** The position of this source is inconsistent with the XRT position.
The position is 106.2 arc sec from the BAT position.
src: 5 distr. of nearby unmatched sources: 0 1 0 0 1
Found 7 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 arc sec of a source list entry are considered a match)
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
236.8065 -47.6737 18.0 -1 USNO-B1 17.89 15.69 16.67
236.8084 -47.6681 13.0 -1 USNO-B1 99.99 17.86 99.99
236.8145 -47.6741 13.9 -1 USNO-B1 19.81 17.52 18.54
236.8121 -47.6690 5.4 -1 USNO-B1 18.76 16.37 17.43
236.8129 -47.6699 2.7 -1 USNO-B1 15.14 13.48 14.22 *
236.8139 -47.6708 3.9 -1 USNO-B1 14.70 17.76 16.40 *
236.8196 -47.6685 19.1 -1 USNO-B1 18.59 16.40 17.37
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1055000_g1374 with 1x1 stamp
ra=236.81431 (15:47:15.43) dec=-47.66961 (-47:40:10.6) +/- 1.1" mag=18.38+/-0.35
dist=57.2 REFID=160
*** The position of this source is inconsistent with the XRT position.
The position is 111.8 arc sec from the BAT position.
src: 8 distr. of nearby unmatched sources: 0 1 0 1 0
Found 13 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
236.8084 -47.6681 15.3 -1 USNO-B1 99.99 17.86 99.99
236.8145 -47.6741 16.3 -1 USNO-B1 19.81 17.52 18.54
236.8121 -47.6690 5.7 -1 USNO-B1 18.76 16.37 17.43
236.8129 -47.6699 3.6 -1 USNO-B1 15.14 13.48 14.22 *
236.8139 -47.6708 4.5 -1 USNO-B1 14.70 17.76 16.40
236.8125 -47.6648 18.0 -1 USNO-B1 19.38 17.32 18.23
236.8133 -47.6641 19.8 -1 USNO-B1 20.27 17.62 18.80
236.8212 -47.6722 19.1 -1 USNO-B1 19.38 17.22 18.18
236.8196 -47.6685 13.4 -1 USNO-B1 18.59 16.40 17.37
236.8167 -47.6647 18.7 -1 USNO-B1 21.20 18.82 19.88
236.8211 -47.6694 16.4 -1 USNO-B1 16.32 13.75 14.89
236.8225 -47.6691 19.9 -1 USNO-B1 17.25 17.14 17.19
236.8219 -47.6679 19.3 -1 USNO-B1 17.08 16.09 16.53
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 11 in the list of sources is a candidate afterglow for 1055000_g1374 with 3x3 stamp
ra=236.82072 (15:47:16.97) dec=-47.67004 (-47:40:12.2) +/- 1.1" mag=17.82+/-0.35
dist=72.8 REFID=87
*** The position of this source is inconsistent with the XRT position.
The position is 125.7 arc sec from the BAT position.
src: 11 distr. of nearby unmatched sources: 0 0 0 1 1
Found 15 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
236.8129 -47.6699 19.0 -1 USNO-B1 15.14 13.48 14.22
236.8139 -47.6708 16.8 -1 USNO-B1 14.70 17.76 16.40
236.8217 -47.6736 13.1 -1 USNO-B1 18.11 16.48 17.20
236.8212 -47.6722 7.8 -1 USNO-B1 19.38 17.22 18.18
236.8196 -47.6685 6.0 -1 USNO-B1 18.59 16.40 17.37
236.8211 -47.6694 2.4 -1 USNO-B1 16.32 13.75 14.89 *
236.8237 -47.6726 11.8 -1 USNO-B1 17.77 15.53 16.52
236.8225 -47.6691 5.4 -1 USNO-B1 17.25 17.14 17.19
236.8219 -47.6679 8.0 -1 USNO-B1 17.08 16.09 16.53
236.8245 -47.6688 10.2 -1 USNO-B1 17.26 16.88 17.05
236.8256 -47.6686 13.1 -1 USNO-B1 17.29 15.25 16.15
236.8237 -47.6656 17.5 -1 USNO-B1 20.72 17.94 19.17
236.8271 -47.6702 15.6 -1 USNO-B1 19.86 18.09 18.88
236.8273 -47.6700 16.0 -1 USNO-B1 17.47 17.15 17.29
236.8243 -47.6652 19.4 -1 USNO-B1 19.64 21.00 20.40
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 19 in the list of sources is a candidate afterglow for 1055000_g1374 with 3x3 stamp
ra=236.79561 (15:47:10.95) dec=-47.69453 (-47:41:40.3) +/- 1.1" mag=17.68+/-0.35
dist=91.6 REFID=46
*** The position of this source is inconsistent with the XRT position.
The position is 72.9 arc sec from the BAT position.
src: 19 distr. of nearby unmatched sources: 0 0 0 0 0
Found 10 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
236.7899 -47.6909 18.9 -1 USNO-B1 17.90 16.13 16.92
236.7919 -47.6938 9.4 -1 USNO-B1 21.02 19.18 20.00
236.7953 -47.6939 2.5 -1 USNO-B1 99.99 16.02 99.99 *
236.7930 -47.6980 13.9 -1 USNO-B1 18.27 17.27 17.71
236.7964 -47.6944 2.0 -1 USNO-B1 16.04 13.87 14.83 *
236.7948 -47.6983 13.8 -1 USNO-B1 99.99 15.76 99.99
236.7993 -47.6919 13.0 -1 USNO-B1 18.25 18.83 18.57
236.7994 -47.6912 15.1 -1 USNO-B1 18.75 17.34 17.97
236.7987 -47.6992 18.3 -1 USNO-B1 21.23 19.98 20.54
236.7992 -47.6988 17.7 -1 USNO-B1 21.61 18.90 20.10
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 42 in the list of sources is a candidate afterglow for 1055000_g1374 with 1x1 stamp
ra=236.80585 (15:47:13.41) dec=-47.70084 (-47:42:03.0) +/- 1.1" mag=18.58+/-0.35
dist=119.3 REFID=167
*** The position of this source is inconsistent with the XRT position.
The position is 106.4 arc sec from the BAT position.
src: 42 srclist_match has ID
src: 42 distr. of nearby unmatched sources: 0 0 0 0 0
Found 8 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
236.7987 -47.6992 18.2 -1 USNO-B1 21.23 19.98 20.54
236.7992 -47.6988 17.7 -1 USNO-B1 21.61 18.90 20.10
236.8036 -47.7002 6.0 -1 USNO-B1 17.67 16.73 17.15
236.8052 -47.7000 3.4 -1 USNO-B1 99.99 21.00 99.99 *
236.8054 -47.7004 2.0 -1 USNO-B1 17.12 15.43 16.18 *
236.8055 -47.7040 11.4 -1 USNO-B1 20.29 17.92 18.97
236.8109 -47.6980 16.1 -1 USNO-B1 21.42 19.73 20.48
236.8129 -47.6985 19.1 -1 USNO-B1 20.63 18.20 19.28
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 59 in the list of sources is a candidate afterglow for 1055000_g1374 with 1x1 stamp
ra=236.73378 (15:46:56.11) dec=-47.67250 (-47:40:21.0) +/- 1.1" mag=18.62+/-0.35
dist=138.5 REFID=159
*** The position of this source is inconsistent with the XRT position.
The position is 98.8 arc sec from the BAT position.
src: 59 srclist_match has ID
src: 59 distr. of nearby unmatched sources: 0 0 0 0 0
Found 20 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
236.7407 -47.6732 17.0 -1 USNO-B1 19.78 18.07 18.83
236.7395 -47.6737 14.5 -1 USNO-B1 20.69 18.91 19.70
236.7352 -47.6750 9.7 -1 USNO-B1 20.25 16.80 18.33
236.7363 -47.6736 7.3 -1 USNO-B1 18.24 16.42 17.23
236.7351 -47.6746 8.0 -1 USNO-B1 17.70 15.38 16.41
236.7359 -47.6737 6.7 -1 USNO-B1 17.79 16.06 16.83
236.7393 -47.6712 14.2 -1 USNO-B1 17.82 16.53 17.10
236.7367 -47.6723 7.2 -1 USNO-B1 20.55 18.56 19.44
236.7347 -47.6736 4.5 -1 USNO-B1 99.99 13.93 99.99
236.7385 -47.6707 13.2 -1 USNO-B1 18.95 17.82 18.32
236.7381 -47.6705 12.6 -1 USNO-B1 20.54 17.48 18.84
236.7342 -47.6733 3.0 -1 USNO-B1 16.06 14.35 15.11 *
236.7337 -47.6732 2.5 -1 USNO-B1 16.47 14.88 15.59 *
236.7336 -47.6725 0.5 -1 USNO-B1 16.72 16.28 16.48 *
236.7303 -47.6754 13.4 -1 USNO-B1 18.41 16.94 17.59
236.7340 -47.6690 12.5 -1 USNO-B1 21.86 21.00 21.38
236.7274 -47.6731 15.6 -1 USNO-B1 18.85 18.02 18.39
236.7278 -47.6726 14.6 -1 USNO-B1 21.05 19.40 20.13
236.7267 -47.6733 17.4 -1 USNO-B1 19.20 17.81 18.43
236.7270 -47.6723 16.4 -1 USNO-B1 22.07 19.90 20.86
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 143 in the list of sources is a candidate afterglow for 1055000_g1374 with 1x1 stamp
ra=236.70794 (15:46:49.91) dec=-47.70628 (-47:42:22.6) +/- 1.1" mag=17.88+/-0.35
dist=240.7 REFID=188
*** The position of this source is inconsistent with the XRT position.
The position is 178.1 arc sec from the BAT position.
src: 143 distr. of nearby unmatched sources: 0 1 0 0 0
Found 17 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
236.7139 -47.7038 17.1 -1 USNO-B1 22.07 21.00 21.48
236.7145 -47.7085 17.7 -1 USNO-B1 18.48 16.99 17.65
236.7141 -47.7094 18.8 -1 USNO-B1 16.92 16.43 16.65
236.7080 -47.7018 16.0 -1 USNO-B1 17.56 16.26 16.84
236.7140 -47.7099 19.7 -1 USNO-B1 17.71 14.96 16.18
236.7095 -47.7071 4.8 -1 USNO-B1 19.40 17.09 18.12
236.7083 -47.7071 3.1 -1 USNO-B1 15.58 13.76 14.57 *
236.7049 -47.7026 15.2 -1 USNO-B1 21.52 20.05 20.70
236.7039 -47.7053 10.5 -1 USNO-B1 21.29 20.32 20.75
236.7068 -47.7105 15.6 -1 USNO-B1 21.45 20.53 20.94
236.7064 -47.7104 15.2 -1 USNO-B1 20.62 19.98 20.26
236.7036 -47.7074 11.2 -1 USNO-B1 21.19 24.10 22.81
236.7063 -47.7113 18.7 -1 USNO-B1 15.98 19.61 18.00
236.7055 -47.7111 18.4 -1 USNO-B1 21.19 21.00 21.08
236.7048 -47.7105 16.9 -1 USNO-B1 21.37 21.00 21.16
236.7008 -47.7065 17.3 -1 USNO-B1 19.72 18.59 19.09
236.7000 -47.7075 19.6 -1 USNO-B1 21.62 20.02 20.73
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 147 in the list of sources is a candidate afterglow for 1055000_g1374 with 3x3 stamp
ra=236.70813 (15:46:49.95) dec=-47.70844 (-47:42:30.4) +/- 1.1" mag=18.09+/-0.35
dist=244.7 REFID=100
*** The position of this source is inconsistent with the XRT position.
The position is 181.7 arc sec from the BAT position.
src: 147 distr. of nearby unmatched sources: 0 1 0 0 0
Found 17 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
236.7145 -47.7085 15.4 -1 USNO-B1 18.48 16.99 17.65
236.7141 -47.7094 14.9 -1 USNO-B1 16.92 16.43 16.65
236.7140 -47.7099 15.2 -1 USNO-B1 17.71 14.96 16.18
236.7095 -47.7071 6.1 -1 USNO-B1 19.40 17.09 18.12
236.7138 -47.7125 19.9 -1 USNO-B1 19.10 17.76 18.35
236.7083 -47.7071 4.8 -1 USNO-B1 15.58 13.76 14.57
236.7114 -47.7128 17.6 -1 USNO-B1 19.61 17.97 18.70
236.7039 -47.7053 15.3 -1 USNO-B1 21.29 20.32 20.75
236.7068 -47.7105 8.2 -1 USNO-B1 21.45 20.53 20.94
236.7064 -47.7104 8.1 -1 USNO-B1 20.62 19.98 20.26
236.7036 -47.7074 11.5 -1 USNO-B1 21.19 24.10 22.81
236.7063 -47.7113 11.4 -1 USNO-B1 15.98 19.61 18.00
236.7055 -47.7111 11.5 -1 USNO-B1 21.19 21.00 21.08
236.7048 -47.7105 10.9 -1 USNO-B1 21.37 21.00 21.16
236.7008 -47.7065 19.1 -1 USNO-B1 19.72 18.59 19.09
236.7000 -47.7075 19.9 -1 USNO-B1 21.62 20.02 20.73
236.7045 -47.7133 19.5 -1 USNO-B1 22.04 26.44 24.49
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 161 in the list of sources is a candidate afterglow for 1055000_g1374 with 1x1 stamp
ra=236.73476 (15:46:56.34) dec=-47.73061 (-47:43:50.2) +/- 1.1" mag=18.29+/-0.35
dist=259.0 REFID=133
*** The position of this source is inconsistent with the XRT position.
The position is 196.9 arc sec from the BAT position.
src: 161 srclist_match has ID
src: 161 distr. of nearby unmatched sources: 0 0 0 0 0
Found 9 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
236.7397 -47.7278 15.6 -1 USNO-B1 17.40 15.23 16.19
236.7318 -47.7271 14.6 -1 USNO-B1 19.81 18.12 18.87
236.7310 -47.7285 11.9 -1 USNO-B1 17.66 16.32 16.92
236.7348 -47.7311 1.6 -1 USNO-B1 16.57 15.28 15.85 *
236.7324 -47.7307 5.7 -1 USNO-B1 20.45 19.65 20.01
236.7383 -47.7324 10.8 -1 USNO-B1 20.92 19.84 20.32
236.7338 -47.7318 5.1 -1 USNO-B1 19.30 15.94 17.43
236.7347 -47.7327 7.6 -1 USNO-B1 17.14 16.85 16.98
236.7350 -47.7334 10.2 -1 USNO-B1 18.51 17.02 17.68
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 1 candidate(s) outside XRT error circle with mag < 18.66
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, XRT distances < 12",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: /Home/eud/uvot_tdrss/swift/uvot_gcn/src_1055000_XRT.reg
# Region file format: DS9 version 3.0
# find_uvot_ag.pl vrs. 2020-10-30 fem XRT
global font="helvetica 12 bold" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source=1
fk5;circle(236.7907,-47.6693,4.8") # color=red dash=0
point(236.78717,-47.66946) # point=diamond 10 color=red width=2
srclist paragraph message for exposure 1 of trigger 1055000
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no image afterglow info
SRCLIST PROBLEM: high density of stars, srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB210612 (Swift/BAT trigger 1055000) at 13:01:32 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of nominal 150.000 seconds with the White
filter starting 1347 seconds after the BAT trigger. No credible afterglow
candidate has been found in the initial data products. Data from the 2.7'x2.7'
sub-image are not available at this time. The 8'x8' region for the list of
sources generated on-board covers 100% of the XRT error circle. Because of the
density of catalogued stars, further analysis is required to report an upper
limit for any afterglow in the region. No correction has been made for
extinction.
------- notes for trigger 1055000 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210612d13h27m52s469046usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1055000
-expid=645197067 -msg_srclist
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/1055000/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
*** Warning -- no exposure found, using srclist assumed value.
XRT position found for srclist. BAT position found.
UVOT exposure began at MET 645197067.75518 or about 2021:163:13:24:22 UT
Found 4382 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 79% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 34 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
The number of srclist sources filled the available telemetry. The weakest
source detected was 18.80 mag. The closest srclist source has ra= 236.7867 dec=
-47.6708 mag=13.86 sep=11.27".
This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the srclist data with mag < 18.66 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=236.70813
(15:46:49.95), DEC=-47.70844 (-47:42:30.4) (J2000). It has a mag of 18.09. It
is 181.7" from the BAT position.
****THIS SOURCE IS OUTSIDE XRT ERROR CIRCLE--USE WITH CAUTION***
UVOT took a finding chart exposure of nominal 150.000 seconds with the White
filter starting 1347 seconds after the BAT trigger. There is a candidate
afterglow in the list of sources generated on-board at
RA(J2000) = 15:46:49.95 = 236.70813
DEC(J2000) = -47:42:30.4 = -47.70844
with a 90%-confidence error radius of about 1.10 arc sec. The estimated
magnitude is 18.09 with a 1-sigma error of about 0.35. No correction has been
made for extinction.
All AG candidates sorted by magnitude for the current finding chart.
(U/V/White SRCLIST mags < 17.5/17.5/18.5 are reliable. Mag > 18.5/18.5/19.5 are
not. Others are uncertain.)
(U/V/White Genie image mags < 18.0/18.0/19.0 are reliable. Mag > 19.0/19.0/20.0
are not. Others are uncertain.)
(Magnitudes followed by * have been corrected for exposure.)
---MET--- -dt- filter ---RA-- ---DEC--- -MAG/Limit Dist(") Source Asp.Corr?
645197067 1347 WHITE srclist found no candidates.
645197067 1347 ? image data are not available.
List afterglow candidates for other finding charts.
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