srclist overlap message for exposure 2 of trigger 1325580
uvot_overlap.pl vrs. 2010-12-20b fem started at 250618d04h54m32s082074usUT
The observation of trigger 1325580 started 2025-06-17T21:18:16.6
Examining file ./1325580_g985_uvot_sky_srclist.fits
The exposure ID is 771887896
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (332.9098,32.7321) with a roll angle of 57.6
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 (332.9020,32.7270) with a radius of 3.000 arc min
This is 0.499 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 (332.8967,32.7325) with a radius of 0.038 arc min
This is 0.660 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 1325580
find_uvot_ag.pl vrs. 2023-04-25a fem started at 250618d04h54m43s052273usUT
Observation start time is 2025-06-17T21:18:16.6
Examining file ./1325580_g985_uvot_catalog_srclist.fits
The exposure ID is 771887896
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 1325580_g985
*** 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 1325580_g985 has mag 19.43
Aspect correction adds 0.00113 degrees (0.272 sec of time = 3.43 arc sec) to RA
Aspect correction adds 0.00021 degrees ( 0.74 arcsec) to Dec
Total aspect correction is 3.51 arcsec
Star catalogs centered at 332.9075 , 32.7331 with radius 8.75 arc min.
n_usno: 1512 n_gsc: 1403
*** WARNING -- bright star catalog has 7 entries brighter than 12 mag
The brightest has mag 9.97646
RA DEC Mag Color
bright star 0: 332.92465 (22:11:41.92) 32.77248 (+32:46:20.9) 11.48 USNO-V
bright star 1: 332.94877 (22:11:47.71) 32.69913 (+32:41:56.9) 11.16 USNO-V
bright star 2: 332.83570 (22:11:20.57) 32.70945 (+32:42:34.0) 10.42 USNO-V
bright star 3: 332.98451 (22:11:56.28) 32.63352 (+32:38:00.7) 9.98 USNO-V
bright star 4: 332.88375 (22:11:32.10) 32.61071 (+32:36:38.6) 10.10 USNO-V
bright star 5: 332.82693 (22:11:18.46) 32.84607 (+32:50:45.9) 11.75 USNO-V
bright star 6: 332.80236 (22:11:12.57) 32.84142 (+32:50:29.1) 11.16 USNO-V
Mean distance difference (CAT_DELTA) for 170 matched entries is 0.727" for 1325580_g985
Mean and std. dev of mag. difference (MAG_DELTA) are 1.602 and 0.471 for 1325580_g985
Found 22 entries without IDs and 2 entries that are acceptable afterglow candidates for 1325580_g985.
Acceptable entries have no ID, XRT distances < 5.75", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
18 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=332.9020 (22:11:36.48) DEC=32.7270 (+32:43:37.2)
XRT distances are from RA=332.8967 (22:11:35.21) DEC=32.7325 (+32:43:57.0)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1325580_g985 with 1x1 stamp
ra=332.89706 (22:11:35.29) dec=32.73264 (+32:43:57.5) +/- 1.1" mag=18.74+/-0.35
dist=1.2 REFID=149
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
Found 6 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
332.8982 32.7286 14.9 -1 USNO-B1 18.68 17.97 18.28
332.8941 32.7376 19.9 -1 USNO-B1 20.07 18.62 19.27
332.8924 32.7310 15.1 -1 USNO-B1 20.49 19.79 20.10
332.8983 32.7285 15.4 -1 GSC2.3 18.09 19.10 18.31
332.8942 32.7376 19.8 -1 GSC2.3 18.23 20.83 99.99
332.8919 32.7319 15.8 -1 GSC2.3 19.72 21.82 99.99
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 12 in the list of sources is a candidate afterglow for 1325580_g985 with 3x3 stamp
ra=332.93497 (22:11:44.39) dec=32.72937 (+32:43:45.7) +/- 1.1" mag=17.64+/-0.35
dist=116.4 REFID=77
*** The position of this source is inconsistent with the XRT position.
The position is 100.2 arc sec from the BAT position.
src: 12 srclist_match has ID
src: 12 distr. of nearby unmatched sources: 0 0 0 0 0
Found 6 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
332.9288 32.7284 19.1 -1 USNO-B1 19.30 18.68 18.96
332.9347 32.7308 5.1 -1 USNO-B1 14.47 13.55 13.96
332.9288 32.7283 19.0 -1 GSC2.3 18.32 19.67 18.95
332.9347 32.7311 6.2 -1 GSC2.3 14.41 15.46 13.77
332.9348 32.7291 1.0 -1 GSC2.3 15.93 16.71 99.99 *
332.9382 32.7319 13.4 -1 GSC2.3 20.42 21.97 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 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=332.89706 (22:11:35.29) dec=32.73264 (+32:43:57.5) +/- 1.1" mag=18.74+/-0.35 dist=1.2 REFID=149
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 19.22, XRT distances < 5.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
srclist paragraph message for exposure 2 of trigger 1325580
------ Start for Possible Stand-alone Circular ----
In response to GRB250617 (Swift/BAT trigger 1325580) at 21:01:50 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 950 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 22:11:35.23 = 332.89678
DEC(J2000) = +32:43:57.0 = 32.73251
with a 90%-confidence error radius of about 0.62 arc sec. This position is 0.2
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.45 with a 1-sigma error of about 0.15. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.087.
------- notes for trigger 1325580 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 250618d04h54m51s885069usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1325580
-expid=771887896 -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/1325580/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 771887896.55948 or about 2025:169:21:18:11 UT
Found 1508 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 13% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 22 srclist
source(s) without IDs. There are 1 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
Found 26 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 8 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.82 mag. Found 133 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 15% of the Genie image region.
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?
771887896 950 WHITE 332.89706 32.73264 18.74/19.2 1.2 srclist Yes
771887896 950 WHITE 332.89678 32.73251 18.45/20.8 0.2 image Yes
List afterglow candidates for other finding charts.
771887742 796 WHITE 332.89698 32.73259 18.69/19.2 0.9 srclist Yes
771887742 796 WHITE 332.89686 32.73247 18.17/20.8 0.5 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 32.73251
GRB_ERROR: 0.62
GRB_RA: 332.89678
IMAGE_START_TIME: 21:18:11
MAGNITUDE: 18.45
MAG_ERROR: 0.15
MESSAGE_TYPE: ACK
SOURCE: XRT