srclist overlap message for exposure 1 of trigger 872470
uvot_overlap.pl vrs. 2010-12-20b fem started at 181118d17h57m43s601728usUT
The observation of trigger 872470 started 2018-11-18T17:51:50.1
Examining file 872470_g1095_uvot_sky_srclist.fits
The exposure ID is 564256310
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (299.2656,-15.6661) with a roll angle of 256.1
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 (299.2700,-15.6650) with a radius of 3.000 arc min
This is 0.260 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
Could not find the location of an XRT error circle
srclist afterglow message for exposure 1 of trigger 872470
find_uvot_ag.pl vrs. 2017-02-17 fem started at 181118d17h57m45s430214usUT
Observation start time is 2018-11-18T17:51:50.1
Examining file 872470_g1095_uvot_catalog_srclist.fits
The exposure ID is 564256310
The exposure is 149.870 sec.
The bin size is 2 pixels
The filter is WHITE
There are 127 detected source(s) for 872470_g1095
Aspect correction adds 0.00005 degrees (0.011 sec of time = 0.16 arc sec) to RA
Aspect correction adds 0.00034 degrees ( 1.24 arcsec) to Dec
Total aspect correction is 1.25 arcsec
Star catalogs centered at 299.2647 , -15.6647 with radius 6.28 arc min.
n_usno: 1085 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 11.1179
RA DEC Mag Color
bright star 0: 299.23523 (19:56:56.45) -15.59063 (-15:35:26.3) 11.44 USNO-V
bright star 1: 299.30515 (19:57:13.24) -15.59262 (-15:35:33.4) 11.29 USNO-V
bright star 2: 299.26833 (19:57:04.40) -15.56476 (-15:33:53.2) 11.12 USNO-V
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 124 matched entries is 0.692" for 872470_g1095
Mean and std. dev of mag. difference (MAG_DELTA) are 1.120 and 0.466 for 872470_g1095
Found 6 entries without IDs and 3 entries that are acceptable afterglow candidates for 872470_g1095.
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=299.2700 (19:57:04.80) DEC=-15.6650 (-15:39:54.0)
XRT distances are as reported in catalog file.
-----------------
Entry 31 in the list of sources is a candidate afterglow for 872470_g1095 with 3x3 stamp
ra=299.29124 (19:57:09.90) dec=-15.63293 (-15:37:58.5) +/- 1.1" mag=19.02+/-0.35
dist=136.9 REFID=87
src: 31 distr. of nearby unmatched sources: 1 1 0 0 0
Found 3 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
299.2918 -15.6329 2.1 -1 USNO-B1 17.89 16.63 17.19 *
299.2925 -15.6331 4.4 -1 USNO-B1 18.79 16.76 17.66
299.2939 -15.6287 17.7 -1 USNO-B1 19.48 17.69 18.49
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 34 in the list of sources is a candidate afterglow for 872470_g1095 with 3x3 stamp
ra=299.24405 (19:56:58.57) dec=-15.63554 (-15:38:07.9) +/- 1.1" mag=18.96+/-0.35
dist=139.1 REFID=113
src: 34 distr. of nearby unmatched sources: 1 0 0 0 0
Found 4 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
299.2439 -15.6363 2.7 -1 USNO-B1 18.55 16.31 17.31 *
299.2396 -15.6383 18.3 -1 USNO-B1 18.76 17.56 18.09
299.2442 -15.6320 12.9 -1 USNO-B1 18.62 17.12 17.79
299.2441 -15.6317 14.0 -1 USNO-B1 19.95 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 52 in the list of sources is a candidate afterglow for 872470_g1095 with 3x3 stamp
ra=299.25761 (19:57:01.83) dec=-15.61788 (-15:37:04.4) +/- 1.1" mag=19.40+/-0.35
dist=175.0 REFID=122
src: 52 distr. of nearby unmatched sources: 0 0 0 0 0
Found 3 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
299.2574 -15.6205 9.3 -1 USNO-B1 20.21 18.09 19.03
299.2574 -15.6186 2.6 -1 USNO-B1 17.51 16.33 16.85 *
299.2531 -15.6162 16.7 -1 USNO-B1 18.91 17.98 18.40
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.66, BAT distances < 200",
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 872470
------ Start for Possible Stand-alone Circular ----
In response to GRB181118 (Swift/BAT trigger 872470) at 17:33:34 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 1073 seconds after the BAT trigger. No credible afterglow candidate
has been found in the initial data products. Results from the 2.7'x2.7'
sub-image are not available at this time. The 8'x8' region for the list of
sources generated on-board covers 100% of the BAT error circle. The list of
sources is typically complete to about 18 mag. No correction has been made for
the expected extinction corresponding to E(B-V) of 0.16.
------- notes for trigger 872470 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 181118d17h57m53s354818usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=872470
-expid=564256310 -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/872470/
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. BAT position found.
UVOT exposure began at MET 564256310.14552 or about 2018:322:17:51:45 UT
Found 1081 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 19% of the srclist region. Found 127 sources in
srclist catalog. Found 6 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.66 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?
564256310 1073 WHITE srclist found no candidates.
564256310 1073 WHITE image data are not available.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: -15.66500
GRB_ERROR: 200
GRB_RA: 299.27000
IMAGE_START_TIME: 17:51:45
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: BAT