srclist overlap message for exposure 1 of trigger 844615
uvot_overlap.pl vrs. 2010-12-20b fem started at 180626d10h08m32s128673usUT
The observation of trigger 844615 started 2018-06-26T08:23:41.4
Examining file ./844615_g144_uvot_sky_srclist.fits
The exposure ID is 551694221
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (243.5621,14.7693) with a roll angle of 320.5
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 (243.5670,14.7640) with a radius of 3.000 arc min
This is 0.430 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 (243.5760,14.7569) with a radius of 0.030 arc min
This is 1.102 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.003 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 844615
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180626d10h08m37s197695usUT
Observation start time is 2018-06-26T08:23:41.4
Examining file ./844615_g144_uvot_catalog_srclist.fits
The exposure ID is 551694221
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 94 detected source(s) for 844615_g144
Aspect correction adds 0.00035 degrees (0.085 sec of time = 1.23 arc sec) to RA
Aspect correction adds 0.00098 degrees ( 3.52 arcsec) to Dec
Total aspect correction is 3.73 arcsec
Star catalogs centered at 243.5616 , 14.7709 with radius 6.19 arc min.
n_usno: 553 n_gsc: 465
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.1936
RA DEC Mag Color
bright star 0: 243.52998 (16:14:07.19) 14.79844 (+14:47:54.4) 11.19 USNO-V
bright star 1: 243.56079 (16:14:14.59) 14.81475 (+14:48:53.1) 11.63 GSC-V
Mean distance difference (CAT_DELTA) for 65 matched entries is 0.730" for 844615_g144
Mean and std. dev of mag. difference (MAG_DELTA) are 0.903 and 0.701 for 844615_g144
Found 35 entries without IDs and 0 entries that are acceptable afterglow candidates for 844615_g144.
Acceptable entries have no ID, XRT distances < 5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
33 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=243.5670 (16:14:16.08) DEC=14.7640 (+14:45:50.4)
XRT distances are from RA=243.5760 (16:14:18.25) DEC=14.7569 (+14:45:24.9)
*** WARNING 37 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 25:
ra=243.53590 dec= 14.79299 +/- 1.1" mag=20.62+/-0.35 dist=190.7 REFID=90
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 < 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 1 of trigger 844615
------ Start for Possible Stand-alone Circular ----
In response to GRB180626 (Swift/BAT trigger 844615) at 08:21:16 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 123 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 16:14:18.12 = 243.57551
DEC(J2000) = +14:45:25.5 = 14.75707
with a 90%-confidence error radius of about 0.81 arc sec. This position is 1.9
arc sec. from the center of the XRT error circle. The estimated magnitude is
20.71 with a 1-sigma error of about 0.23. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.04.
------- notes for trigger 844615 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180626d10h08m44s817793usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=844615
-expid=551694221 -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/844615/
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 551694221.42398 or about 2018:177:08:23:36 UT
Found 549 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 9% of the srclist region. Found 94 sources in
srclist catalog. Found 35 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 15 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
20.89 mag. Found 119 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 12% of the Genie image region. The
closest srclist source has ra= 243.5759 dec= 14.7613 mag=18.58 sep=15.67".
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?
551694221 122 WHITE srclist found no candidates.
551694221 122 WHITE 243.57551 14.75707 20.71/20.9 1.9 image Yes
List afterglow candidates for other finding charts.
551694433 334 U srclist found no candidates.
551694433 334 U image found no candidates.
551694964 865 WHITE srclist found no candidates.
551694964 865 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 14.75707
GRB_ERROR: 0.81
GRB_RA: 243.57551
IMAGE_START_TIME: 08:23:36
MAGNITUDE: 20.71
MAG_ERROR: 0.23
MESSAGE_TYPE: ACK
SOURCE: XRT