image overlap message for exposure 1 of trigger 1192737
uvot_overlap.pl vrs. 2010-12-20b fem started at 230926d22h28m05s518315usUT
The observation of trigger 1192737 started 2023-09-26T22:14:45.9
Examining file 1192737_g173_uvot_sky_image.fits
The exposure ID is 717459285
The exposure time is 149.868 (seconds)
The filter is WHITE.
*** Warning -- no aspect solution was applied to the image.
consequently the calculated overlaps are questionable.
The uvot region is centered at (83.7777,22.5030) with a roll angle of 87.7
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 (83.7710,22.5020) with a radius of 3.000 arc min
This is 0.378 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 7.17 sq. arc min or 0.25 of the BAT error circle
Could not find the location of an XRT error circle
image afterglow message for exposure 1 of trigger 1192737
find_uvot_ag.pl vrs. 2023-04-25a fem started at 230926d22h28m08s702342usUT
Observation start time is 2023-09-26T22:14:45.9
Examining file 1192737_g173_uvot_sources_image.fits
The exposure ID is 717459285
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 4 detected source(s) for 1192737_g173
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 83.7892 , 22.4999 with radius 2.03 arc min.
n_usno: 105 n_gsc: 109
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.51032
RA DEC Mag Color
bright star 0: 83.76871 (05:35:04.49) 22.52304 (+22:31:23.0) 10.51 USNO-V
*** WARNING -- no XRT distances are available.
Found 4 entries without IDs and 4 entries that are acceptable afterglow candidates for 1192737_g173.
Acceptable entries have no ID, BAT distance < 210" or XRT distance < 20", 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=83.7710 (05:35:05.04) DEC=22.5020 (+22:30:07.2)
XRT distances are as reported in catalog file.
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1192737_g173 with genie
ra=83.78955 (05:35:09.49) dec=22.48346 (+22:29:00.5) +/- 0.7" mag=13.77+/-0.14
dist=90.9 REFID=1 major=4.6 minor=4.0 flag=18 (blended+aperture_incomplete)
Found 4 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 12 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
83.7914 22.4849 8.0 -1 USNO-B1 20.23 19.58 19.87 *
83.7896 22.4890 20.0 -1 GSC2.3 19.07 20.61 18.94
83.7929 22.4860 14.6 -1 GSC2.3 20.00 99.99 99.99
83.7913 22.4849 7.8 -1 GSC2.3 20.23 99.99 99.99 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 13.5" or brighter than 12 mag
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1192737_g173 with genie
ra=83.78407 (05:35:08.18) dec=22.51637 (+22:30:58.9) +/- 0.8" mag=18.58+/-0.16
dist=67.6 REFID=2 major=1.1 minor=0.4 flag=0
Found 4 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
83.7824 22.5134 12.1 -1 USNO-B1 15.55 14.21 14.81 *
83.7874 22.5203 17.9 -1 USNO-B1 20.61 19.33 19.90
83.7824 22.5133 12.4 -1 GSC2.3 14.47 15.69 14.84 *
83.7875 22.5202 17.9 -1 GSC2.3 19.78 21.71 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 13.5" or brighter than 12 mag
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1192737_g173 with genie
ra=83.79125 (05:35:09.90) dec=22.49683 (+22:29:48.6) +/- 0.8" mag=18.11+/-0.15
dist=69.9 REFID=3 major=4.2 minor=3.8 flag=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
83.7902 22.5000 11.9 -1 USNO-B1 20.54 19.66 20.05 *
83.7922 22.4986 7.3 -1 USNO-B1 20.76 19.85 20.25 *
83.7904 22.4916 19.2 -1 USNO-B1 20.68 19.08 19.79
83.7902 22.4999 11.7 -1 GSC2.3 19.66 22.09 99.99 *
83.7922 22.4985 6.8 -1 GSC2.3 20.11 22.07 99.99 *
83.7906 22.4915 19.3 -1 GSC2.3 19.06 21.56 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 13.5" or brighter than 12 mag
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1192737_g173 with genie
ra=83.79440 (05:35:10.66) dec=22.48972 (+22:29:23.0) +/- 0.7" mag=16.48+/-0.14
dist=89.5 REFID=4 major=2.5 minor=2.2 flag=0
This source is near the edge of image (0.875)
Found 5 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
83.7904 22.4916 14.8 -1 USNO-B1 20.68 19.08 19.79 *
83.7896 22.4891 16.3 -1 USNO-B1 19.86 19.16 19.47 *
83.7906 22.4915 14.2 -1 GSC2.3 19.06 21.56 99.99 *
83.7896 22.4890 16.2 -1 GSC2.3 19.07 20.61 18.94 *
83.7929 22.4860 14.1 -1 GSC2.3 20.00 99.99 99.99 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 20.25" or brighter than 12 mag
There are 2.9958334E+05 counts in the bkg source region of 6306.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 47.508 counts/pixel (5-sig UL in 4" is 19.25 mag) for 1192737_g173
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.25, BAT distances < 210",
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: 1192737_717459285_230926d22h28m08s702342usUT_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(83.7777,22.5030,45")
fk5;-circle(83.7912514738158,22.4968258242344,6")
image paragraph message for exposure 1 of trigger 1192737
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 GRB230926 (Swift/BAT trigger 1192737) at 22:11:51 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 141 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 0.647.
------- notes for trigger 1192737 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 230926d22h28m10s186499usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1192737
-expid=717459285 -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/1192737/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
No XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 717459285.91132 or about 2023:269:22:14:40 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 4 source(s) in Genie image catalog. Found 4 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 19.25 mag. Found 107 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 18% 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?
717459285 141 WHITE srclist data are not available.
717459285 141 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------