srclist overlap message for exposure 2 of trigger 1093742
uvot_overlap.pl vrs. 2010-12-20b fem started at 220119d10h11m55s284514usUT
The observation of trigger 1093742 started 2022-01-18T18:25:23.7
Examining file ./1093742_g284_uvot_sky_srclist.fits
The exposure ID is 664223123
The exposure time is undefined.
The filter is U.
The uvot region is centered at (192.2728,22.9171) with a roll angle of 103.1
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 (192.2740,22.9090) with a radius of 3.000 arc min
This is 0.493 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 (192.2685,22.9153) with a radius of 0.037 arc min
This is 0.264 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 1093742
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220119d10h12m07s130720usUT
Observation start time is 2022-01-18T18:25:23.7
Examining file ./1093742_g284_uvot_catalog_srclist.fits
The exposure ID is 664223123
The exposure is 178.428 sec.
The bin size is 2 pixels
The filter is U
There are 10 detected source(s) for 1093742_g284
Aspect correction adds 0.00032 degrees (0.077 sec of time = 1.06 arc sec) to RA
Aspect correction adds -0.00134 degrees (-4.81 arcsec) to Dec
Total aspect correction is 4.93 arcsec
Star catalogs centered at 192.2931 , 22.9252 with radius 6.07 arc min.
n_usno: 256 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.12756
RA DEC Mag Color
bright star 0: 192.38693 (12:49:32.86) 22.94340 (+22:56:36.2) 10.65 USNO-V
bright star 1: 192.26479 (12:49:03.55) 23.00966 (+23:00:34.8) 10.13 USNO-V
Mean distance difference (CAT_DELTA) for 8 matched entries is 0.489" for 1093742_g284
Mean and std. dev of mag. difference (MAG_DELTA) are 1.291 and 0.421 for 1093742_g284
Found 2 entries without IDs and 1 entries that are acceptable afterglow candidates for 1093742_g284.
Acceptable entries have no ID, XRT distances < 5.5", 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=192.2740 (12:49:05.76) DEC=22.9090 (+22:54:32.4)
XRT distances are from RA=192.2685 (12:49:04.44) DEC=22.9153 (+22:54:55.0)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1093742_g284 with 5x5 stamp
ra=192.26883 (12:49:04.52) dec=22.91530 (+22:54:55.1) +/- 1.1" mag=18.18+/-0.35
dist=1.1 REFID=9
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
Found 0 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)
##### This source remains a candidate #####
It has no entries 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=192.26883 (12:49:04.52) dec=22.91530 (+22:54:55.1) +/- 1.1" mag=18.18+/-0.35 dist=1.1 REFID=9
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 17.93, XRT distances < 5.5",
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 2 of trigger 1093742
------ Start for Possible Stand-alone Circular ----
In response to GRB220118 (Swift/BAT trigger 1093742) at 18:20:38 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 178 seconds with the U filter starting
257 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 12:49:04.49 = 192.26872
DEC(J2000) = +22:54:56.4 = 22.91568
with a 90%-confidence error radius of about 0.64 arc sec. This position is 1.6
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.36 with a 1-sigma error of about 0.16. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.025.
------- notes for trigger 1093742 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220119d10h12m09s539436usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1093742
-expid=664223123 -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/1093742/
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 664223123.68642 or about 2022:018:18:25:18 UT
Found 252 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 10 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
17.93 mag.
Found 5 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 1 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
19.42 mag. Found 43 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 4% of the Genie image region.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 192.2688 dec= 22.9153 mag=18.18 sep=1.09".
The closest srclist source has ra= 192.2688 dec= 22.9153 mag=18.18 sep=1.09".
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?
664223123 256 U 192.26883 22.91530 18.18/17.9 1.1 srclist Yes
664223123 256 U 192.26872 22.91568 17.36/19.4 1.6 image Yes
List afterglow candidates for other finding charts.
664222965 98 WHITE 192.26888 22.91573 18.16/19.2 2.0 srclist Yes
664222965 98 WHITE 192.26888 22.91562 17.83/20.1 1.8 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 22.91568
GRB_ERROR: 0.64
GRB_RA: 192.26872
IMAGE_START_TIME: 18:25:18
MAGNITUDE: 17.36
MAG_ERROR: 0.16
MESSAGE_TYPE: ACK
SOURCE: XRT