srclist overlap message for exposure 1 of trigger 1340954
uvot_overlap.pl vrs. 2010-12-20b fem started at 250809d17h15m42s916993usUT
The observation of trigger 1340954 started 2025-08-09T16:56:03.8
Examining file ./1340954_g163_uvot_sky_srclist.fits
The exposure ID is 776451363
The exposure time is undefined.
The filter is U.
The uvot region is centered at (233.0007,-53.2878) with a roll angle of 277.0
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (233.0150,-53.2890) with a radius of 3.000 arc min
This is 0.520 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 (233.0004,-53.2964) with a radius of 0.050 arc min
This is 0.513 arc min from the center of the uvot region
The area of the XRT error circle is 0.008 sq. arc min
The UVOT/XRT overlap is 0.008 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1340954
find_uvot_ag.pl vrs. 2023-04-25a fem started at 250809d17h15m44s874050usUT
Observation start time is 2025-08-09T16:56:03.8
Examining file ./1340954_g163_uvot_catalog_srclist.fits
The exposure ID is 776451363
The exposure is 249.924 sec.
The bin size is 2 pixels
The filter is U
There are 190 detected source(s) for 1340954_g163
*** 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 1340954_g163 has mag 17.96
Aspect correction adds -0.00319 degrees (-0.766 sec of time = -6.87 arc sec) to RA
Aspect correction adds 0.00004 degrees ( 0.14 arcsec) to Dec
Total aspect correction is 6.87 arcsec
Star catalogs centered at 232.9948 , -53.2852 with radius 8.70 arc min.
n_usno: 5005 n_gsc: 7357
*** WARNING -- bright star catalog has 23 entries brighter than 12 mag
The brightest has mag 9.9392
RA DEC Mag Color
bright star 0: 232.99638 (15:31:59.13) -53.29747 (-53:17:50.9) 11.61 USNO-R
bright star 1: 233.01616 (15:32:03.88) -53.29799 (-53:17:52.8) 11.82 USNO-R
bright star 2: 232.98600 (15:31:56.64) -53.26263 (-53:15:45.5) 11.85 USNO-R
bright star 3: 233.01242 (15:32:02.98) -53.32809 (-53:19:41.1) 11.87 USNO-V
bright star 4: 232.91270 (15:31:39.05) -53.27775 (-53:16:39.9) 11.83 USNO-R
bright star 5: 232.90721 (15:31:37.73) -53.26989 (-53:16:11.6) 11.68 USNO-V
bright star 6: 233.06497 (15:32:15.59) -53.32531 (-53:19:31.1) 11.56 USNO-V
bright star 7: 233.04619 (15:32:11.08) -53.23574 (-53:14:08.7) 11.39 USNO-R
bright star 8: 233.10545 (15:32:25.31) -53.31334 (-53:18:48.0) 11.61 GSC-F
bright star 9: 232.96051 (15:31:50.52) -53.35461 (-53:21:16.6) 11.23 USNO-R
bright star 10: 232.95345 (15:31:48.83) -53.35755 (-53:21:27.2) 9.94 USNO-V
bright star 11: 233.11415 (15:32:27.40) -53.33617 (-53:20:10.2) 11.31 USNO-R
bright star 12: 233.11341 (15:32:27.22) -53.33693 (-53:20:12.9) 11.65 USNO-R
bright star 13: 233.07095 (15:32:17.03) -53.20966 (-53:12:34.8) 10.44 USNO-V
bright star 14: 232.85603 (15:31:25.45) -53.32546 (-53:19:31.6) 11.61 USNO-V
bright star 15: 233.11896 (15:32:28.55) -53.35933 (-53:21:33.6) 11.40 USNO-V
bright star 16: 232.97952 (15:31:55.09) -53.33247 (-53:19:56.9) 11.86 GSC-F
bright star 17: 233.18086 (15:32:43.41) -53.26734 (-53:16:02.4) 10.67 GSC-V
bright star 18: 233.06668 (15:32:16.00) -53.17910 (-53:10:44.8) 11.93 GSC-V
bright star 19: 232.80115 (15:31:12.28) -53.30222 (-53:18:08.0) 11.26 GSC-V
bright star 20: 232.94012 (15:31:45.63) -53.39861 (-53:23:55.0) 11.85 GSC-V
bright star 21: 233.11981 (15:32:28.75) -53.17308 (-53:10:23.1) 10.30 GSC-V
bright star 22: 233.21883 (15:32:52.52) -53.33564 (-53:20:08.3) 11.88 GSC-F
Mean distance difference (CAT_DELTA) for 146 matched entries is 0.969" for 1340954_g163
Mean and std. dev of mag. difference (MAG_DELTA) are 2.037 and 0.813 for 1340954_g163
Found 50 entries without IDs and 5 entries that are acceptable afterglow candidates for 1340954_g163.
Acceptable entries have no ID, XRT distances < 7.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
8 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=233.0150 (15:32:03.60) DEC=-53.2890 (-53:17:20.4)
XRT distances are from RA=233.0004 (15:32:00.10) DEC=-53.2964 (-53:17:46.9)
*** WARNING 26 per cent of entries have no IDs.
-----------------
Entry 15 in the list of sources is a candidate afterglow for 1340954_g163 with 1x1 stamp
ra=233.05586 (15:32:13.41) dec=-53.30045 (-53:18:01.6) +/- 1.1" mag=17.45+/-0.35
dist=120.2 REFID=129
*** The position of this source is inconsistent with the XRT position.
The position is 97.1 arc sec from the BAT position.
src: 15 srclist_match has ID
src: 15 distr. of nearby unmatched sources: 0 0 0 0 0
Found 23 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
233.0480 -53.2988 17.9 -1 USNO-B1 99.99 15.93 99.99
233.0475 -53.3027 19.6 -1 USNO-B1 99.99 16.90 99.99
233.0505 -53.3037 16.5 -1 USNO-B1 99.99 18.80 99.99
233.0518 -53.3034 13.8 -1 USNO-B1 99.99 17.65 99.99
233.0564 -53.3003 1.3 -1 USNO-B1 16.13 15.02 15.52 *
233.0590 -53.2972 13.5 -1 USNO-B1 99.99 15.28 99.99
233.0588 -53.2984 9.7 -1 USNO-B1 99.99 17.30 99.99
233.0575 -53.3007 3.5 -1 USNO-B1 99.99 14.88 99.99 *
233.0561 -53.3029 8.9 -1 USNO-B1 99.99 20.98 99.99
233.0564 -53.3028 8.4 -1 USNO-B1 99.99 50.00 99.99
233.0587 -53.3011 6.6 -1 USNO-B1 99.99 17.96 99.99
233.0555 -53.3055 18.2 -1 USNO-B1 99.99 17.69 99.99
233.0631 -53.2992 16.3 -1 USNO-B1 99.99 24.99 99.99
233.0480 -53.2987 18.1 -1 GSC2.3 19.19 21.64 99.99
233.0474 -53.3026 19.8 -1 GSC2.3 19.18 99.99 99.99
233.0515 -53.3032 13.6 -1 GSC2.3 18.29 20.83 99.99
233.0560 -53.3003 0.6 -1 GSC2.3 14.74 16.35 99.99 *
233.0589 -53.2970 13.9 -1 GSC2.3 15.37 18.24 99.99
233.0581 -53.2986 8.1 -1 GSC2.3 17.64 20.41 99.99
233.0554 -53.3055 18.4 -1 GSC2.3 19.74 21.79 99.99
233.0591 -53.3013 7.6 -1 GSC2.3 17.81 21.38 99.99
233.0602 -53.3026 12.3 -1 GSC2.3 99.99 19.30 99.99
233.0631 -53.2990 16.4 -1 GSC2.3 99.99 22.01 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 29 in the list of sources is a candidate afterglow for 1340954_g163 with 3x3 stamp
ra=232.92598 (15:31:42.24) dec=-53.29644 (-53:17:47.2) +/- 1.1" mag=16.35+/-0.35
dist=160.2 REFID=72
*** The position of this source is inconsistent with the XRT position.
The position is 193.4 arc sec from the BAT position.
src: 29 srclist_match has ID
src: 29 distr. of nearby unmatched sources: 0 0 1 0 0
Found 24 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
232.9329 -53.2937 17.7 -1 USNO-B1 99.99 21.41 99.99
232.9310 -53.2926 17.4 -1 USNO-B1 99.99 18.42 99.99
232.9321 -53.2992 16.5 -1 USNO-B1 18.51 17.26 17.82
232.9272 -53.2916 17.7 -1 USNO-B1 99.99 19.55 99.99
232.9292 -53.2979 8.7 -1 USNO-B1 99.99 20.90 99.99
232.9261 -53.2923 14.7 -1 USNO-B1 99.99 17.59 99.99
232.9253 -53.2930 12.5 -1 USNO-B1 17.37 14.98 16.04
232.9242 -53.2947 7.3 -1 USNO-B1 13.88 12.24 12.97 *
232.9233 -53.2924 15.8 -1 USNO-B1 99.99 13.75 99.99
232.9225 -53.2919 18.0 -1 USNO-B1 15.49 14.67 15.03
232.9240 -53.2966 4.4 -1 USNO-B1 13.35 17.76 15.80
232.9238 -53.2983 8.1 -1 USNO-B1 99.99 18.88 99.99
232.9236 -53.2992 11.3 -1 USNO-B1 99.99 20.84 99.99
232.9187 -53.2947 16.9 -1 USNO-B1 99.99 20.98 99.99
232.9195 -53.2967 14.0 -1 USNO-B1 99.99 20.90 99.99
232.9328 -53.2938 17.6 -1 GSC2.3 99.99 21.97 99.99
232.9319 -53.2993 16.4 -1 GSC2.3 17.31 19.00 99.99
232.9300 -53.2981 10.3 -1 GSC2.3 99.99 99.99 99.99
232.9273 -53.2914 18.2 -1 GSC2.3 99.99 99.99 99.99
232.9255 -53.2930 12.4 -1 GSC2.3 15.66 18.96 16.69
232.9256 -53.2963 1.0 -1 GSC2.3 14.05 15.32 99.99 *
232.9223 -53.2918 18.5 -1 GSC2.3 14.70 16.24 15.25
232.9227 -53.2952 8.4 -1 GSC2.3 13.77 14.36 14.17
232.9235 -53.2985 9.0 -1 GSC2.3 99.99 22.08 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 30 in the list of sources is a candidate afterglow for 1340954_g163 with 1x1 stamp
ra=232.92542 (15:31:42.10) dec=-53.29621 (-53:17:46.4) +/- 1.1" mag=16.91+/-0.35
dist=161.4 REFID=174
*** The position of this source is inconsistent with the XRT position.
The position is 194.5 arc sec from the BAT position.
src: 30 srclist_match has ID
src: 30 distr. of nearby unmatched sources: 0 0 1 0 0
Found 24 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
232.9329 -53.2937 18.3 -1 USNO-B1 99.99 21.41 99.99
232.9310 -53.2926 17.5 -1 USNO-B1 99.99 18.42 99.99
232.9321 -53.2992 18.0 -1 USNO-B1 18.51 17.26 17.82
232.9272 -53.2916 17.1 -1 USNO-B1 99.99 19.55 99.99
232.9292 -53.2979 10.2 -1 USNO-B1 99.99 20.90 99.99
232.9261 -53.2923 14.0 -1 USNO-B1 99.99 17.59 99.99
232.9253 -53.2930 11.6 -1 USNO-B1 17.37 14.98 16.04
232.9242 -53.2947 6.0 -1 USNO-B1 13.88 12.24 12.97 *
232.9233 -53.2924 14.6 -1 USNO-B1 99.99 13.75 99.99
232.9225 -53.2919 16.8 -1 USNO-B1 15.49 14.67 15.03
232.9240 -53.2966 3.5 -1 USNO-B1 13.35 17.76 15.80 *
232.9238 -53.2983 8.2 -1 USNO-B1 99.99 18.88 99.99
232.9236 -53.2992 11.6 -1 USNO-B1 99.99 20.84 99.99
232.9187 -53.2947 15.4 -1 USNO-B1 99.99 20.98 99.99
232.9195 -53.2967 12.9 -1 USNO-B1 99.99 20.90 99.99
232.9328 -53.2938 18.2 -1 GSC2.3 99.99 21.97 99.99
232.9319 -53.2993 17.9 -1 GSC2.3 17.31 19.00 99.99
232.9300 -53.2981 11.8 -1 GSC2.3 99.99 99.99 99.99
232.9273 -53.2914 17.6 -1 GSC2.3 99.99 99.99 99.99
232.9255 -53.2930 11.5 -1 GSC2.3 15.66 18.96 16.69
232.9256 -53.2963 0.4 -1 GSC2.3 14.05 15.32 99.99 *
232.9223 -53.2918 17.2 -1 GSC2.3 14.70 16.24 15.25
232.9227 -53.2952 7.0 -1 GSC2.3 13.77 14.36 14.17
232.9235 -53.2985 9.1 -1 GSC2.3 99.99 22.08 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 34 in the list of sources is a candidate afterglow for 1340954_g163 with 3x3 stamp
ra=232.92300 (15:31:41.52) dec=-53.29521 (-53:17:42.8) +/- 1.1" mag=15.58+/-0.35
dist=166.6 REFID=35
*** The position of this source is inconsistent with the XRT position.
The position is 199.2 arc sec from the BAT position.
src: 34 srclist_match has ID
src: 34 distr. of nearby unmatched sources: 0 1 0 0 0
Found 23 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
232.9310 -53.2926 19.5 -1 USNO-B1 99.99 18.42 99.99
232.9272 -53.2916 15.9 -1 USNO-B1 99.99 19.55 99.99
232.9292 -53.2979 16.5 -1 USNO-B1 99.99 20.90 99.99
232.9261 -53.2923 12.2 -1 USNO-B1 99.99 17.59 99.99
232.9253 -53.2930 9.4 -1 USNO-B1 17.37 14.98 16.04
232.9242 -53.2947 3.2 -1 USNO-B1 13.88 12.24 12.97 *
232.9233 -53.2924 10.3 -1 USNO-B1 99.99 13.75 99.99
232.9225 -53.2919 12.0 -1 USNO-B1 15.49 14.67 15.03
232.9240 -53.2966 5.6 -1 USNO-B1 13.35 17.76 15.80
232.9218 -53.2900 18.9 -1 USNO-B1 99.99 18.24 99.99
232.9238 -53.2983 11.2 -1 USNO-B1 99.99 18.88 99.99
232.9236 -53.2992 14.5 -1 USNO-B1 99.99 20.84 99.99
232.9187 -53.2947 9.4 -1 USNO-B1 99.99 20.98 99.99
232.9195 -53.2967 9.3 -1 USNO-B1 99.99 20.90 99.99
232.9171 -53.2919 17.5 -1 USNO-B1 99.99 18.51 99.99
232.9300 -53.2981 18.1 -1 GSC2.3 99.99 99.99 99.99
232.9273 -53.2914 16.4 -1 GSC2.3 99.99 99.99 99.99
232.9255 -53.2930 9.6 -1 GSC2.3 15.66 18.96 16.69
232.9256 -53.2963 6.8 -1 GSC2.3 14.05 15.32 99.99
232.9223 -53.2918 12.3 -1 GSC2.3 14.70 16.24 15.25
232.9227 -53.2952 0.7 -1 GSC2.3 13.77 14.36 14.17 *
232.9235 -53.2985 11.7 -1 GSC2.3 99.99 22.08 99.99
232.9172 -53.2918 17.4 -1 GSC2.3 99.99 20.76 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 57 in the list of sources is a candidate afterglow for 1340954_g163 with 1x1 stamp
ra=233.08272 (15:32:19.85) dec=-53.25645 (-53:15:23.2) +/- 1.1" mag=16.32+/-0.35
dist=228.2 REFID=155
*** The position of this source is inconsistent with the XRT position.
The position is 187.0 arc sec from the BAT position.
src: 57 distr. of nearby unmatched sources: 0 0 0 0 0
Found 24 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
233.0760 -53.2601 19.6 -1 USNO-B1 99.99 20.00 99.99
233.0758 -53.2597 18.9 -1 USNO-B1 99.99 16.80 99.99
233.0751 -53.2550 17.1 -1 USNO-B1 99.99 20.61 99.99
233.0822 -53.2604 14.1 -1 USNO-B1 99.99 17.75 99.99
233.0834 -53.2619 19.8 -1 USNO-B1 99.99 23.17 99.99
233.0789 -53.2560 8.5 -1 USNO-B1 19.72 18.77 19.19
233.0783 -53.2550 10.8 -1 USNO-B1 99.99 17.11 99.99
233.0813 -53.2562 3.2 -1 USNO-B1 13.96 13.41 13.65 *
233.0851 -53.2597 12.6 -1 USNO-B1 99.99 17.87 99.99
233.0876 -53.2583 12.4 -1 USNO-B1 99.99 17.67 99.99
233.0874 -53.2581 11.6 -1 USNO-B1 99.99 17.37 99.99
233.0882 -53.2524 18.7 -1 USNO-B1 99.99 15.83 99.99
233.0888 -53.2525 19.2 -1 USNO-B1 99.99 19.85 99.99
233.0755 -53.2595 18.9 -1 GSC2.3 19.09 21.73 99.99
233.0770 -53.2605 19.2 -1 GSC2.3 99.99 21.75 99.99
233.0748 -53.2550 17.9 -1 GSC2.3 99.99 22.13 99.99
233.0819 -53.2604 14.2 -1 GSC2.3 18.08 21.80 99.99
233.0834 -53.2619 19.6 -1 GSC2.3 99.99 21.89 99.99
233.0796 -53.2566 6.8 -1 GSC2.3 99.99 99.99 99.99
233.0779 -53.2548 12.0 -1 GSC2.3 17.71 19.64 99.99
233.0815 -53.2561 3.0 -1 GSC2.3 13.22 14.16 13.46 *
233.0847 -53.2598 12.7 -1 GSC2.3 17.75 20.86 99.99
233.0874 -53.2582 11.8 -1 GSC2.3 18.54 21.24 99.99
233.0871 -53.2576 10.3 -1 GSC2.3 99.99 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 10 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
232.9992 -53.2949 5.8 -1 USNO-B1 99.99 16.17 99.99
232.9990 -53.2954 4.6 -1 USNO-B1 18.09 15.98 16.92
232.9971 -53.2968 7.3 -1 USNO-B1 12.86 11.62 12.17
232.9991 -53.2968 3.2 -1 USNO-B1 16.76 15.36 15.98
233.0004 -53.2969 1.8 -1 USNO-B1 99.99 16.70 99.99
232.9964 -53.2975 9.6 -1 USNO-B1 99.99 11.61 99.99
232.9992 -53.2946 6.9 -1 GSC2.3 16.65 18.73 17.10
232.9992 -53.2963 2.7 -1 GSC2.3 16.42 99.99 99.99
233.0049 -53.2960 9.7 -1 GSC2.3 99.99 21.60 99.99
233.0012 -53.2972 3.3 -1 GSC2.3 99.99 99.99 99.99
The closest star is 1.79" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=232.99635 (15:31:59.12) dec=-53.29728 (-53:17:50.2) +/- 1.1" mag=16.42+/-0.35 dist=9.4 REFID=92
There are no candidates inside BAT error circle, but outside XRT error circle.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.12, XRT distances < 7.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 1340954
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: high density of stars
SRCLIST PROBLEM: high density of stars, srclist filled telemetry buffer
See notes for more details.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB250809 (Swift/BAT trigger 1340954) at 16:53:19 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
128 seconds after the BAT trigger. No credible afterglow candidate has been
found in the initial data products. The 2.7'x2.7' sub-image 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 sub-image. 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 the large, but uncertain, extinction expected.
------- notes for trigger 1340954 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 250809d17h15m52s856260usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1340954
-expid=776451363 -meonly -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/1340954/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Large extinction of 6.364 found for bat position. Unreliable extinction found
for xrt position. XRT position found for srclist. XRT position found for Genie
image. BAT position found.
UVOT exposure began at MET 776451363.80612 or about 2025:222:16:55:58 UT
Since the srclist star catalog filled its buffer, the sensitivity for an
afterglow may be REDUCED. The stars will eliminate afterglows from about 63%
or more of the srclist region. Found 190 sources in srclist catalog. WARNING --
srclist catalog buffer filled. Found 50 srclist source(s) without IDs. There
are 0 good candidate(s) in the srclist catalog. Good candidates must be
brighter than 18.12 mag.
Found 23 source(s) in Genie image catalog. Found 6 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.29 mag. Found 846 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
88% of the Genie image region.
Genie image analysis:
Found 20678.8 counts in the large background region of 5372.0 pixels or a rate
of 3.849 counts/pixel in a radius of 45.0 arcsec. Based on this background, the
typical 5-sigma UL at a random point in the Genie image is 19.53 mag. for a
4-arcsec aperture.
Found 1041.6 counts in the XRT position region of 201.0 pixels or a rate of
5.182 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.770 +/- 0.140 (1-sigma) cps or
18.42 mag and a range from 18.24 to 18.64 mag. The 3-sigma UL at the XRT
position is 1.189 cps or 17.95 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 17.96 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 232.9964 dec= -53.2973 mag=16.42 sep=9.36".
The closest srclist source has ra= 232.9964 dec= -53.2973 mag=16.42 sep=9.36".
The closest Genie source has ra= 232.9959 dec= -53.2972 mag=15.67 sep=10.22".
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 250 seconds with the U filter starting
128 seconds after the BAT trigger. There is a candidate afterglow in the list
of sources generated on-board at
RA(J2000) = 15:31:59.12 = 232.99635
DEC(J2000) = -53:17:50.2 = -53.29728
with a 90%-confidence error radius of about 1.10 arc sec. This position is 9.36
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.42 with a 1-sigma error of about 0.35. No correction has been made for the
large, but uncertain, extinction expected.
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?
776451363 127 U srclist found no candidates.
776451363 127 U image found no candidates.
List afterglow candidates for other finding charts.
776452098 862 U srclist found no candidates.
776452098 862 U image found no candidates.
------- Tokens for Quick GCN -------