srclist overlap message for exposure 1 of trigger 1519536
uvot_overlap.pl vrs. 2010-12-20b fem started at 261018d01h21m00s589951usUT
The observation of trigger 1519536 started 2026-10-17T16:07:13.6
Examining file ./1519536_g127_uvot_sky_srclist.fits
The exposure ID is 813946033
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (139.9093,12.6390) with a roll angle of 106.5
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 (139.9000,12.6440) with a radius of 3.000 arc min
This is 0.620 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 (139.9035,12.6378) with a radius of 0.042 arc min
This is 0.351 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 1 of trigger 1519536
find_uvot_ag.pl vrs. 2023-04-25a fem started at 261018d01h21m05s390053usUT
Observation start time is 2026-10-17T16:07:13.6
Examining file ./1519536_g127_uvot_catalog_srclist.fits
The exposure ID is 813946033
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 20 detected source(s) for 1519536_g127
Aspect correction adds 0.00160 degrees (0.383 sec of time = 5.61 arc sec) to RA
Aspect correction adds -0.00167 degrees (-6.00 arcsec) to Dec
Total aspect correction is 8.21 arcsec
Star catalogs centered at 139.9171 , 12.6379 with radius 5.54 arc min.
n_usno: 241 n_gsc: 193
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 9.50264
RA DEC Mag Color
bright star 0: 140.00825 (09:20:01.98) 12.63048 (+12:37:49.7) 11.13 USNO-V
bright star 1: 139.94559 (09:19:46.94) 12.72548 (+12:43:31.7) 9.50 USNO-V
Mean distance difference (CAT_DELTA) for 18 matched entries is 0.515" for 1519536_g127
Mean and std. dev of mag. difference (MAG_DELTA) are 1.261 and 0.242 for 1519536_g127
Found 2 entries without IDs and 0 entries that are acceptable afterglow candidates for 1519536_g127.
Acceptable entries have no ID, XRT distances < 6.25", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=139.9000 (09:19:36.00) DEC=12.6440 (+12:38:38.4)
XRT distances are from RA=139.9035 (09:19:36.83) DEC=12.6378 (+12:38:16.0)
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 17:
ra=139.95682 dec= 12.61607 +/- 1.1" mag=19.62+/-0.35 dist=203.1 REFID=20
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
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 < 6.25",
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 1519536
------ Start for Possible Stand-alone Circular ----
In response to GRB261017 (Swift/BAT trigger 1519536) at 16:05:05 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 89 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. The typical 3-sigma upper limit has been about 19.6 mag.
The 8'x8' region for the list of sources generated on-board covers 100% of the
XRT error circle. The list of sources is typically complete to about 18 mag. No
correction has been made for extinction.
------- notes for trigger 1519536 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 261018d01h21m08s222824usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1519536
-expid=813946033 -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/1519536/
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 813946033.60242 or about 2026:290:16:07:08 UT
Found 237 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 20 sources in
srclist catalog. Found 2 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 3 source(s) in Genie image catalog. Found 0 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.24 mag. Found 26 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 4% of the
Genie image region.
Genie image analysis:
Found 134655.0 counts in the large background region of 6291.0 pixels or a rate
of 21.404 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 19.51 mag. for a
4-arcsec aperture.
Found 4328.3 counts in the XRT position region of 198.0 pixels or a rate of
21.860 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.872 +/- 0.471 (1-sigma) cps or
19.75 mag and a range from 19.28 to 20.60 mag. The 3-sigma UL at the XRT
position is 2.285 cps or 18.71 mag. The closest srclist source has ra= 139.8824
dec= 12.6411 mag=16.80 sep=75.10". The closest Genie source has ra= 139.9155
dec= 12.6230 mag=19.23 sep=68.09".
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?
813946033 88 WHITE srclist found no candidates.
813946033 88 WHITE image found no candidates.
List afterglow candidates for other finding charts.
813946245 300 U srclist found no candidates.
813946245 300 U image found no candidates.
813946824 879 WHITE srclist found no candidates.
813946824 879 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 12.63778
GRB_ERROR: 6.25
GRB_RA: 139.90346
IMAGE_START_TIME: 16:07:08
MAGNITUDE: 18.7
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT