srclist overlap message for exposure 3 of trigger 811686
uvot_overlap.pl vrs. 2010-12-20b fem started at 180225d20h49m46s914915usUT
The observation of trigger 811686 started 2018-02-25T20:45:38.3
Examining file 811686_g886_uvot_sky_srclist.fits
The exposure ID is 541284338
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (185.6128,29.2959) with a roll angle of 56.1
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 (185.6090,29.2930) 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
Could not find the location of an XRT error circle
srclist afterglow message for exposure 3 of trigger 811686
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180225d20h49m47s574171usUT
Observation start time is 2018-02-25T20:45:38.3
Examining file 811686_g886_uvot_catalog_srclist.fits
The exposure ID is 541284338
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 78 detected source(s) for 811686_g886
Aspect correction adds 0.00080 degrees (0.191 sec of time = 2.50 arc sec) to RA
Aspect correction adds 0.00006 degrees ( 0.22 arcsec) to Dec
Total aspect correction is 2.51 arcsec
Star catalogs centered at 185.6228 , 29.2887 with radius 7.90 arc min.
n_usno: 304 n_gsc: 339
*** 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 43 matched entries is 0.790" for 811686_g886
Mean and std. dev of mag. difference (MAG_DELTA) are 2.064 and 2.291 for 811686_g886
Found 38 entries without IDs and 0 entries that are acceptable afterglow candidates for 811686_g886.
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.
35 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.
*** WARNING 48 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to BAT position is no. 16:
ra=185.52947 dec= 29.27002 +/- 1.1" mag=20.18+/-0.35 dist=263.1 REFID=73
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 3 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 150 seconds with the White filter
starting 866 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 180225d20h49m48s519159usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=811686
-expid=541284338 -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/
No XRT position found for srclist. BAT position found.
UVOT exposure began at MET 541284338.30942 or about 2018:056:20:45:33 UT
Found 330 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 3% of the srclist region. Found 78 sources in
srclist catalog. Found 38 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?
541284338 866 WHITE srclist found no candidates.
541284338 866 ? image data are not available.
List afterglow candidates for other finding charts.
541283650 178 WHITE srclist found no candidates.
541283650 178 WHITE image found no candidates.
541283808 336 U srclist found no candidates.
541283808 336 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 29.29300
GRB_ERROR: 200
GRB_RA: 185.60900
IMAGE_START_TIME: 20:45:33
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: BAT