srclist overlap message for exposure 1 of trigger 808625
uvot_overlap.pl vrs. 2010-12-20b fem started at 180206d04h47m09s144522usUT
The observation of trigger 808625 started 2018-02-05T04:28:51.2
Examining file ./808625_g539497731_uvot_sky_srclist.fits
The exposure ID is 539497731
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (126.8013,11.5411) with a roll angle of 247.9
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 (126.8187,11.5364) with a radius of 1.100 arc min
This is 1.061 arc min from the center of the uvot region
The area of the BAT error circle is 3.80 sq. arc min
The UVOT/BAT overlap is 3.80 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (126.8197,11.5421) with a radius of 0.025 arc min
This is 1.079 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.002 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 808625
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180206d04h47m10s098946usUT
Observation start time is 2018-02-05T04:28:51.2
Examining file ./808625_g539497731_uvot_catalog_srclist.fits
The exposure ID is 539497731
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is WHITE
There are 58 detected source(s) for 808625_g539497731
Aspect correction adds -0.00042 degrees (-0.100 sec of time = -1.47 arc sec) to RA
Aspect correction adds 0.00005 degrees ( 0.18 arcsec) to Dec
Total aspect correction is 1.48 arcsec
Star catalogs centered at 126.8064 , 11.5407 with radius 6.12 arc min.
n_usno: 331 n_gsc: 318
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.99886
RA DEC Mag Color
bright star 0: 126.88022 (08:27:31.25) 11.52760 (+11:31:39.3) 11.23 USNO-V
bright star 1: 126.75016 (08:27:00.04) 11.58998 (+11:35:23.9) 11.00 USNO-V
Mean distance difference (CAT_DELTA) for 47 matched entries is 0.726" for 808625_g539497731
Mean and std. dev of mag. difference (MAG_DELTA) are 1.385 and 1.026 for 808625_g539497731
Found 11 entries without IDs and 1 entries that are acceptable afterglow candidates for 808625_g539497731.
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.
8 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=126.8187 (08:27:16.50) DEC=11.5364 (+11:32:11.1)
XRT distances are from RA=126.8197 (08:27:16.72) DEC=11.5421 (+11:32:31.6)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 808625_g539497731 with 5x5 stamp
ra=126.81972 (08:27:16.73) dec=11.54193 (+11:32:31.0) +/- 1.1" mag=16.44+/-0.35
dist=0.7 REFID=11
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
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=126.81972 (08:27:16.73) dec=11.54193 (+11:32:31.0) +/- 1.1" mag=16.44+/-0.35 dist=0.7 REFID=11
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 < 5",
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 808625
------ Start for Possible Stand-alone Circular ----
In response to GRB180205 (Swift/BAT trigger 808625) at 04:25:29 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 181 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 08:27:16.73 = 126.81970
DEC(J2000) = +11:32:30.7 = 11.54185
with a 90%-confidence error radius of about 0.61 arc sec. This position is 0.9
arc sec. from the center of the XRT error circle. The estimated magnitude is
15.65 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.03.
------- notes for trigger 808625 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180206d04h47m12s596359usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=808625
-expid=539497731 -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/808625/
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 539497731.2186 or about 2018:036:04:28:46 UT
Found 327 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 58 sources in
srclist catalog. Found 11 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 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
20.63 mag. Found 46 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 5% 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?
539497731 181 WHITE 126.81972 11.54193 16.44/19.2 0.7 srclist Yes
539497731 181 WHITE 126.81970 11.54185 15.65/20.6 0.9 image Yes
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 11.54185
GRB_ERROR: 0.61
GRB_RA: 126.81970
IMAGE_START_TIME: 04:28:46
MAGNITUDE: 15.65
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT