srclist overlap message for exposure 1 of trigger 887512
uvot_overlap.pl vrs. 2010-12-20b fem started at 190203d19h53m48s506771usUT
The observation of trigger 887512 started 2019-02-03T15:46:31.6
Examining file ./887512_g142_uvot_sky_srclist.fits
The exposure ID is 570901591
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (22.5692,55.7381) with a roll angle of 240.8
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 (22.5770,55.7380) with a radius of 3.000 arc min
This is 0.265 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 (22.5966,55.7222) with a radius of 0.045 arc min
This is 1.330 arc min from the center of the uvot region
The area of the XRT error circle is 0.006 sq. arc min
The UVOT/XRT overlap is 0.006 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 887512
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190203d19h53m51s280090usUT
Observation start time is 2019-02-03T15:46:31.6
Examining file ./887512_g142_uvot_catalog_srclist.fits
The exposure ID is 570901591
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 887512_g142
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 887512_g142 has mag 19.53
Aspect correction adds -0.00207 degrees (-0.497 sec of time = -4.20 arc sec) to RA
Aspect correction adds 0.00040 degrees ( 1.43 arcsec) to Dec
Total aspect correction is 4.43 arcsec
Star catalogs centered at 22.5747 , 55.7356 with radius 6.57 arc min.
n_usno: 1381 n_gsc: 0
*** WARNING -- bright star catalog has 4 entries brighter than 12 mag
The brightest has mag 9.82508
RA DEC Mag Color
bright star 0: 22.59698 (01:30:23.27) 55.75489 (+55:45:17.6) 11.65 USNO-V
bright star 1: 22.65768 (01:30:37.84) 55.75087 (+55:45:03.1) 9.83 USNO-V
bright star 2: 22.51257 (01:30:03.02) 55.67796 (+55:40:40.6) 10.60 USNO-V
bright star 3: 22.72534 (01:30:54.08) 55.80142 (+55:48:05.1) 11.06 USNO-V
Mean distance difference (CAT_DELTA) for 137 matched entries is 0.825" for 887512_g142
Mean and std. dev of mag. difference (MAG_DELTA) are 1.704 and 0.607 for 887512_g142
Found 62 entries without IDs and 1 entries that are acceptable afterglow candidates for 887512_g142.
Acceptable entries have no ID, XRT distances < 6.75", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
57 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=22.5770 (01:30:18.48) DEC=55.7380 (+55:44:16.8)
XRT distances are from RA=22.5966 (01:30:23.18) DEC=55.7222 (+55:43:19.9)
*** WARNING 32 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 887512_g142 with 3x3 stamp
ra=22.59634 (01:30:23.12) dec=55.72211 (+55:43:19.6) +/- 1.1" mag=19.10+/-0.35
dist=0.6 REFID=85
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
Found 1 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
22.6011 55.7262 17.5 -1 USNO-B1 20.32 19.16 19.68
##### 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=22.59634 (01:30:23.12) dec=55.72211 (+55:43:19.6) +/- 1.1" mag=19.10+/-0.35 dist=0.6 REFID=85
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 < 6.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 887512
------ Start for Possible Stand-alone Circular ----
In response to GRB190203 (Swift/BAT trigger 887512) at 15:44:08 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 120 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 01:30:23.19 = 22.59662
DEC(J2000) = +55:43:20.7 = 55.72241
with a 90%-confidence error radius of about 0.63 arc sec. This position is 0.8
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.58 with a 1-sigma error of about 0.15. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.64.
------- notes for trigger 887512 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190203d19h53m56s507293usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=887512
-expid=570901591 -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/887512/
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 570901591.64328 or about 2019:034:15:46:26 UT
Found 1377 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 22% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 62 srclist
source(s) without IDs. There are 1 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
Found 27 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 4 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.61 mag. Found 210 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 20% 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?
570901591 120 WHITE 22.59634 55.72211 19.10/19.2 0.6 srclist Yes
570901591 120 WHITE 22.59662 55.72241 18.58/20.6 0.8 image Yes
List afterglow candidates for other finding charts.
570901749 278 U srclist found no candidates.
570901749 278 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 55.72241
GRB_ERROR: 0.63
GRB_RA: 22.59662
IMAGE_START_TIME: 15:46:26
MAGNITUDE: 18.58
MAG_ERROR: 0.15
MESSAGE_TYPE: ACK
SOURCE: XRT