image overlap message for exposure 2 of trigger 1513082
uvot_overlap.pl vrs. 2010-12-20b fem started at 260924d22h17m59s939684usUT
The observation of trigger 1513082 started 2026-09-24T01:19:40.9
Examining file ./1513082_g371_uvot_sky_image.fits
The exposure ID is 811905580
The exposure time is 37.624 (seconds)
The filter is U.
*** Warning -- no aspect solution was applied to the image.
consequently the calculated overlaps are questionable.
*** Warning -- found 21225 null pixels in the image.
The uvot region is centered at (133.7683,12.0464) with a roll angle of 101.4
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (133.7537,12.0408) with a radius of 1.000 arc min
This is 0.917 arc min from the center of the uvot region
The area of the BAT error circle is 3.14 sq. arc min
The UVOT/BAT overlap is at most 0.57 sq. arc min or 0.18 of the BAT error circle
The XRT error circle is centered at (133.7629,12.0432) with a radius of 0.067 arc min
This is 0.370 arc min from the center of the uvot region
The area of the XRT error circle is 0.014 sq. arc min
The UVOT/XRT overlap is 0.00 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1513082
find_uvot_ag.pl vrs. 2023-04-25a fem started at 260924d22h18m09s174515usUT
Observation start time is 2026-09-24T01:19:40.9
Examining file ./1513082_g371_uvot_sources_image.fits
The exposure ID is 811905580
The exposure is 37.624 sec.
The bin size is 2 pixels
The filter is U
There are 0 detected source(s) for 1513082_g371
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 133.7428 , 12.0429 with radius 2.00 arc min.
n_usno: 42 n_gsc: 31
Bright star catalog has no entries brighter than 12 mag
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1513082_g371.
Acceptable entries have no ID, XRT distances < 10", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
Magnitude criteria will be applied later.
BAT distances are from RA=133.7537 (08:55:00.90) DEC=12.0408 (+12:02:27.0)
XRT distances are from RA=133.7629 (08:55:03.10) DEC=12.0432 (+12:02:35.4)
Found 5 entries in star catalog(s) within 20" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
133.7594 12.0435 12.4 -1 USNO-B1 20.74 19.79 20.21
133.7595 12.0419 12.9 -1 USNO-B1 21.38 20.13 20.68
133.7659 12.0465 15.7 -1 USNO-B1 21.13 19.34 20.13
133.7594 12.0428 12.3 -1 GSC2.3 19.38 21.95 99.99
133.7658 12.0463 15.2 -1 GSC2.3 19.01 21.19 19.10
The closest star is 12.30" away.
List UVOT sources within 20" of the XRT position:
There are 0.0000000 counts in the bkg source region of 0.0000000 pixels.
There are 0.0000000 counts in the xrt source region of 0.0000000 pixels.
There are 0.0000000 counts in the xrt_bkg source region of 0.0000000 pixels.
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 17.29, XRT distances < 10",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Results are questionable because aspect solution FAILED.
Region file: 1513082_811905580_260924d22h18m09s174515usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(133.7683,12.0464,45")
Region file: 1513082_811905580_260924d22h18m09s174515usUT_xrt.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(133.76292,12.04317,8")
Region file: 1513082_811905580_260924d22h18m09s174515usUT_xrt_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(133.76292,12.04317,25")
fk5;-circle(133.76292,12.04317,15")
image paragraph message for exposure 2 of trigger 1513082
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no aspect solution
SRCLIST PROBLEM: no srclist afterglow info
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB260924 (Swift/BAT trigger 1513082) at 01:13:28 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 38 seconds with the U filter starting
338 seconds after the BAT trigger. No credible afterglow candidate has been
found in the initial data products. The 2.7'x2.7' sub-image processing FAILED
because of no aspect solution. Results from the list of sources generated
on-board are not available at this time. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.041.
------- notes for trigger 1513082 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 260924d22h18m12s106221usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1513082
-expid=811905580 -meonly -msg_image
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/1513082/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 811905580.88698 or about 2026:267:01:19:35 UT
No information found about the number of stars in the star catalog for srclist
region.
THERE IS NO ASPECT SOLUTION for the image data.
Found 0 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 17.29 mag. Found 38 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 6% of the
Genie image region. The Genie image is INCOMPLETE with 21225 null pixels.
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?
811905580 337 U srclist data are not available.
811905580 337 U image found no candidates.
List afterglow candidates for other finding charts.
811905366 123 ? srclist data are not available.
811905366 123 WHITE image found no candidates.
------- Tokens for Quick GCN -------