image overlap message for exposure 2 of trigger 1434591
uvot_overlap.pl vrs. 2010-12-20b fem started at 260109d13h10m33s105515usUT
The observation of trigger 1434591 started 2026-01-09T13:02:28.7
Examining file 1434591_g912_uvot_sky_image.fits
The exposure ID is 789656548
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (123.7309,-35.2651) with a roll angle of 166.0
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 (123.7280,-35.2580) with a radius of 3.000 arc min
This is 0.448 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 2 of trigger 1434591
find_uvot_ag.pl vrs. 2023-04-25a fem started at 260109d13h10m34s024508usUT
Observation start time is 2026-01-09T13:02:28.7
Examining file 1434591_g912_uvot_catalog_image.fits
The exposure ID is 789656548
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 38 detected source(s) for 1434591_g912
Aspect correction adds -0.00023 degrees (-0.055 sec of time = -0.68 arc sec) to RA
Aspect correction adds -0.00109 degrees (-3.93 arcsec) to Dec
Total aspect correction is 3.99 arcsec
Star catalogs centered at 123.7339 , -35.2645 with radius 2.66 arc min.
n_usno: 351 n_gsc: 351
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.6016
RA DEC Mag Color
bright star 0: 123.73714 (08:14:56.91) -35.23836 (-35:14:18.1) 11.60 GSC-V
bright star 1: 123.76502 (08:15:03.61) -35.28478 (-35:17:05.2) 11.79 USNO-V
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 36 matched entries is 0.581" for 1434591_g912
Mean and std. dev of mag. difference (MAG_DELTA) are 0.987 and 0.362 for 1434591_g912
Found 4 entries without IDs and 4 entries that are acceptable afterglow candidates for 1434591_g912.
Acceptable entries have no ID, BAT distance < 200" or XRT distance < 10", 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=123.7280 (08:14:54.72) DEC=-35.2580 (-35:15:28.8)
XRT distances are as reported in catalog file.
-----------------
Entry 23 in the list of sources is a candidate afterglow for 1434591_g912 with genie
ra=123.74638 (08:14:59.13) dec=-35.24669 (-35:14:48.1) +/- 0.6" mag=16.04+/-0.14
dist=67.7 REFID=7 major=0.9 minor=0.8 flag=0
This source is near the edge of image (0.945)
Found 9 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
123.7402 -35.2452 19.0 -1 USNO-B1 19.16 17.93 18.48
123.7466 -35.2461 2.2 -1 USNO-B1 14.97 14.49 14.70 *
123.7468 -35.2457 3.8 -1 USNO-B1 99.99 18.48 99.99 *
123.7520 -35.2466 16.5 -1 USNO-B1 21.19 19.05 20.00
123.7460 -35.2521 19.4 -1 GSC2.3 20.06 99.99 99.99
123.7400 -35.2451 19.6 -1 GSC2.3 17.85 19.12 99.99
123.7464 -35.2463 1.5 -1 GSC2.3 14.40 14.80 14.99 *
123.7471 -35.2454 5.1 -1 GSC2.3 99.99 99.99 99.99 *
123.7516 -35.2464 15.5 -1 GSC2.3 18.34 21.42 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 24 in the list of sources is a candidate afterglow for 1434591_g912 with genie
ra=123.72492 (08:14:53.98) dec=-35.24160 (-35:14:29.8) +/- 0.8" mag=20.41+/-0.22
dist=59.7 REFID=3 major=0.8 minor=0.4 flag=0
This source is near the edge of image (0.970)
Found 10 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
123.7284 -35.2431 11.7 -1 USNO-B1 19.18 18.02 18.54
123.7203 -35.2445 17.3 -1 USNO-B1 20.21 19.05 19.56
123.7254 -35.2407 3.7 -1 USNO-B1 15.62 15.18 15.38 *
123.7207 -35.2388 15.9 -1 USNO-B1 19.73 18.30 18.93
123.7207 -35.2383 17.0 -1 USNO-B1 99.99 18.77 99.99
123.7241 -35.2444 10.4 -1 GSC2.3 19.76 22.23 99.99
123.7283 -35.2430 11.3 -1 GSC2.3 18.06 19.44 99.99
123.7201 -35.2445 17.7 -1 GSC2.3 18.81 20.67 99.99
123.7252 -35.2406 3.8 -1 GSC2.3 14.75 15.62 14.92 *
123.7204 -35.2388 16.5 -1 GSC2.3 18.47 20.62 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 35 in the list of sources is a candidate afterglow for 1434591_g912 with genie
ra=123.76251 (08:15:03.00) dec=-35.25881 (-35:15:31.7) +/- 0.7" mag=19.83+/-0.18
dist=101.5 REFID=16 major=1.2 minor=0.6 flag=0
This source is near the edge of image (1.043)
Found 13 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
123.7567 -35.2570 18.4 -1 USNO-B1 14.73 13.65 14.13
123.7620 -35.2592 2.0 -1 USNO-B1 15.58 15.82 15.71 *
123.7610 -35.2547 15.6 -1 USNO-B1 19.10 18.84 18.95
123.7644 -35.2634 17.5 -1 USNO-B1 99.99 19.30 99.99
123.7652 -35.2638 19.8 -1 USNO-B1 21.50 18.58 19.88
123.7673 -35.2550 19.5 -1 USNO-B1 18.46 18.37 18.41
123.7691 -35.2595 19.7 -1 USNO-B1 20.88 19.77 20.26
123.7565 -35.2570 18.8 -1 GSC2.3 12.41 14.70 13.22
123.7619 -35.2591 2.2 -1 GSC2.3 14.78 15.51 15.03 *
123.7608 -35.2547 15.7 -1 GSC2.3 17.80 19.21 99.99
123.7645 -35.2637 18.5 -1 GSC2.3 99.99 21.72 99.99
123.7671 -35.2550 19.3 -1 GSC2.3 16.76 18.66 99.99
123.7691 -35.2596 19.6 -1 GSC2.3 19.41 21.92 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 39 in the list of sources is a candidate afterglow for 1434591_g912 with genie
ra=123.74255 (08:14:58.21) dec=-35.28878 (-35:17:19.6) +/- 0.7" mag=19.28+/-0.16
dist=118.8 REFID=1 major=1.0 minor=1.0 flag=3 (neighbor+blended)
This source is near the edge of image (0.916)
Found 12 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
123.7408 -35.2879 5.9 -1 USNO-B1 99.99 17.37 99.99
123.7403 -35.2882 6.9 -1 USNO-B1 99.99 18.58 99.99
123.7410 -35.2883 4.8 -1 USNO-B1 19.92 17.94 18.82 *
123.7422 -35.2888 0.9 -1 USNO-B1 18.64 17.14 17.80 *
123.7428 -35.2893 2.1 -1 USNO-B1 18.42 17.70 18.02 *
123.7433 -35.2893 3.0 -1 USNO-B1 20.08 18.36 19.12 *
123.7439 -35.2905 7.2 -1 USNO-B1 21.32 18.62 19.82
123.7458 -35.2910 12.5 -1 USNO-B1 20.72 19.02 19.77
123.7407 -35.2882 5.8 -1 GSC2.3 17.64 19.11 99.99
123.7425 -35.2887 0.2 -1 GSC2.3 17.38 18.69 99.99 *
123.7439 -35.2907 7.9 -1 GSC2.3 99.99 21.65 99.99
123.7458 -35.2910 12.3 -1 GSC2.3 18.69 20.90 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
There are 61737.656 counts in the bkg source region of 5503.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 11.219 counts/pixel (5-sig UL in 4" is 20.04 mag) for 1434591_g912
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 20.03, BAT distances < 200",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1434591_789656548_260109d13h10m34s024508usUT_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(123.7309,-35.2651,45")
fk5;-circle(123.73290990865,-35.2679623536922,6")
fk5;-circle(123.723173530108,-35.2667012733042,6")
fk5;-circle(123.727098955064,-35.2559919981153,6")
fk5;-circle(123.724878976045,-35.2693565492221,6")
fk5;-circle(123.720179555816,-35.2688973977309,6")
fk5;-circle(123.74091678885,-35.2686356770104,6")
fk5;-circle(123.746447510387,-35.2618906815873,6")
fk5;-circle(123.73161155682,-35.2763651010992,6")
image paragraph message for exposure 2 of trigger 1434591
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: partial overlap
SRCLIST PROBLEM: srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB260109 (Swift/BAT trigger 1434591) at 12:47:15 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 876 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 25% of
the BAT 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 86% of the
BAT error circle. The list of sources is typically complete to about 18 mag. No
correction has been made for extinction.
------- notes for trigger 1434591 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 260109d13h10m35s722575usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1434591
-expid=789656548 -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/1434591/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
No XRT position found for srclist. No XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 789656548.6517 or about 0000:11697:13:02:32 UT
Found 3398 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 34% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 13 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.66 mag.
Found 38 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 20.03 mag. Found 347 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
34% of the Genie image region.
Genie image analysis:
Found 61737.7 counts in the large background region of 5503.0 pixels or a rate
of 11.219 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 19.86 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 18.41 mag.
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?
789656548 875 WHITE srclist found no candidates.
789656548 875 WHITE image found no candidates.
List afterglow candidates for other finding charts.
789655818 145 U srclist found no candidates.
789655818 145 U image found no candidates.
------- Tokens for Quick GCN -------