srclist overlap message for exposure 3 of trigger 882252
uvot_overlap.pl vrs. 2010-12-20b fem started at 190106d15h27m10s339032usUT
The observation of trigger 882252 started 2019-01-06T13:49:25.3
Examining file ./882252_g880_uvot_sky_srclist.fits
The exposure ID is 568475365
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (29.8776,23.8454) with a roll angle of 253.4
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (29.8860,23.8570) with a radius of 3.000 arc min
This is 0.835 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 (29.8800,23.8454) with a radius of 0.030 arc min
This is 0.136 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 3 of trigger 882252
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190106d15h27m39s680778usUT
Observation start time is 2019-01-06T13:49:25.3
Examining file ./882252_g880_uvot_catalog_srclist.fits
The exposure ID is 568475365
The exposure is 43.078 sec.
The bin size is 2 pixels
The filter is WHITE
There are 39 detected source(s) for 882252_g880
Aspect correction adds 0.00046 degrees (0.110 sec of time = 1.51 arc sec) to RA
Aspect correction adds 0.00016 degrees ( 0.57 arcsec) to Dec
Total aspect correction is 1.61 arcsec
Star catalogs centered at 29.8828 , 23.8496 with radius 7.96 arc min.
n_usno: 337 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 35 matched entries is 0.537" for 882252_g880
Mean and std. dev of mag. difference (MAG_DELTA) are 3.078 and 0.421 for 882252_g880
Found 4 entries without IDs and 3 entries that are acceptable afterglow candidates for 882252_g880.
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.
Magnitude criteria will be applied later.
BAT distances are from RA=29.8860 (01:59:32.64) DEC=23.8570 (+23:51:25.2)
XRT distances are from RA=29.8800 (01:59:31.21) DEC=23.8454 (+23:50:43.6)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 882252_g880 with 5x5 stamp
ra=29.88001 (01:59:31.20) dec=23.84578 (+23:50:44.8) +/- 1.1" mag=19.16+/-0.35
dist=1.2 REFID=18
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
-----------------
Entry 6 in the list of sources is a candidate afterglow for 882252_g880 with 5x5 stamp
ra=29.86151 (01:59:26.76) dec=23.87167 (+23:52:18.0) +/- 1.1" mag=21.56+/-0.35
dist=112.4 REFID=39
*** The position of this source is inconsistent with the XRT position.
The position is 96.4 arc sec from the BAT position.
src: 6 distr. of nearby unmatched sources: 0 0 0 0 0
Found 0 entries in star catalog(s) within 20.0" of the candidate.
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 8 in the list of sources is a candidate afterglow for 882252_g880 with 5x5 stamp
ra=29.85511 (01:59:25.23) dec=23.82018 (+23:49:12.7) +/- 1.1" mag=21.47+/-0.35
dist=122.5 REFID=38
*** The position of this source is inconsistent with the XRT position.
The position is 167.1 arc sec from the BAT position.
src: 8 distr. of nearby unmatched sources: 0 0 0 0 0
Found 1 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
29.8534 23.8231 12.0 -1 USNO-B1 20.46 19.27 19.80
*** If XRT position is correct, then this is NOT the afterglow
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=29.88001 (01:59:31.20) dec=23.84578 (+23:50:44.8) +/- 1.1" mag=19.16+/-0.35 dist=1.2 REFID=18
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.54, 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 3 of trigger 882252
------ Start for Possible Stand-alone Circular ----
In response to GRB190106 (Swift/BAT trigger 882252) at 13:34:44 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 43 seconds with the White filter
starting 858 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 01:59:31.18 = 29.87991
DEC(J2000) = +23:50:43.7 = 23.84546
with a 90%-confidence error radius of about 0.62 arc sec. This position is 0.4
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.97 with a 1-sigma error of about 0.15. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.09.
------- notes for trigger 882252 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190106d15h27m45s020719usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=882252
-expid=568475365 -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/882252/
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 568475365.29082 or about 2019:006:13:49:20 UT
Found 333 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 3% of the srclist region. Found 39 sources in
srclist catalog. Found 4 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.54 mag.
Found 6 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
19.91 mag. Found 29 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= 29.8800 dec= 23.8458 mag=19.16 sep=1.24".
The closest srclist source has ra= 29.8800 dec= 23.8458 mag=19.16 sep=1.24".
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?
568475365 858 WHITE 29.88001 23.84578 19.16/18.5 1.2 srclist Yes
568475365 858 WHITE 29.87991 23.84546 16.97/19.9 0.4 image Yes
List afterglow candidates for other finding charts.
568474597 90 WHITE 29.87984 23.84555 17.09/19.2 0.8 srclist Yes
568474597 90 WHITE 29.87993 23.84555 16.45/20.6 0.5 image Yes
568474810 303 U 29.87965 23.84545 16.87/18.1 1.3 srclist Yes
568474810 303 U 29.87991 23.84552 15.87/20.4 0.5 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 23.84546
GRB_ERROR: 0.62
GRB_RA: 29.87991
IMAGE_START_TIME: 13:49:20
MAGNITUDE: 16.97
MAG_ERROR: 0.15
MESSAGE_TYPE: ACK
SOURCE: XRT