srclist overlap message for exposure 1 of trigger 811686
uvot_overlap.pl vrs. 2010-12-20b fem started at 180225d20h37m35s818711usUT
The observation of trigger 811686 started 2018-02-25T20:34:10.1
Examining file 811686_g198_uvot_sky_srclist.fits
The exposure ID is 541283650
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (185.6133,29.2962) with a roll angle of 56.1
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 (185.6090,29.2930) with a radius of 3.000 arc min
This is 0.293 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 811686
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180225d20h37m36s446519usUT
Observation start time is 2018-02-25T20:34:10.1
Examining file 811686_g198_uvot_catalog_srclist.fits
The exposure ID is 541283650
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 15 detected source(s) for 811686_g198
Aspect correction adds 0.00029 degrees (0.069 sec of time = 0.90 arc sec) to RA
Aspect correction adds 0.00016 degrees ( 0.59 arcsec) to Dec
Total aspect correction is 1.08 arcsec
Star catalogs centered at 185.6118 , 29.2930 with radius 6.25 arc min.
n_usno: 197 n_gsc: 234
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 8.47835
RA DEC Mag Color
bright star 0: 185.60944 (12:22:26.26) 29.20874 (+29:12:31.5) 8.48 GSC-V
bright star 1: 185.60916 (12:22:26.20) 29.20844 (+29:12:30.4) 10.61 USNO-V
bright star 2: 185.60979 (12:22:26.35) 29.20755 (+29:12:27.2) 8.52 USNO-V
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 15 matched entries is 0.659" for 811686_g198
Mean and std. dev of mag. difference (MAG_DELTA) are 1.362 and 0.418 for 811686_g198
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 811686_g198.
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=185.6090 (12:22:26.16) DEC=29.2930 (+29:17:34.8)
XRT distances are as reported in catalog file.
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 811686
------ Start for Possible Stand-alone Circular ----
In response to GRB180225 (Swift/BAT trigger 811686) at 20:30:51 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of nominal 150.000 seconds with the White
filter starting 178 seconds after the BAT trigger. No credible afterglow
candidate has been found in the initial data products. Data 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 0.02.
------- notes for trigger 811686 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180225d20h37m37s480320usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=811686
-expid=541283650 -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/811686/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
*** Warning -- no exposure found, using srclist assumed value.
No XRT position found for srclist. BAT position found.
UVOT exposure began at MET 541283650.0869 or about 2018:056:20:34:05 UT
Found 225 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 15 sources in
srclist catalog. Found 0 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?
541283650 178 WHITE srclist found no candidates.
541283650 178 ? image data are not available.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 29.29300
GRB_ERROR: 200
GRB_RA: 185.60900
IMAGE_START_TIME: 20:34:05
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: BAT