srclist overlap message for exposure 1 of trigger 876016
uvot_overlap.pl vrs. 2010-12-20b fem started at 181214d09h47m45s401168usUT
The observation of trigger 876016 started 2018-12-13T13:37:12.8
Examining file ./876016_g2373_uvot_sky_srclist.fits
The exposure ID is 566401032
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (248.2071,78.5008) with a roll angle of 168.3
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 (248.2104,78.5002) with a radius of 1.900 arc min
This is 0.052 arc min from the center of the uvot region
The area of the BAT error circle is 11.34 sq. arc min
The UVOT/BAT overlap is 11.34 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (248.2701,78.4970) with a radius of 0.027 arc min
This is 0.787 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 876016
find_uvot_ag.pl vrs. 2017-02-17 fem started at 181214d09h47m47s197529usUT
Observation start time is 2018-12-13T13:37:12.8
Examining file ./876016_g2373_uvot_catalog_srclist.fits
The exposure ID is 566401032
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 27 detected source(s) for 876016_g2373
Aspect correction adds -0.00597 degrees (-1.433 sec of time = -4.30 arc sec) to RA
Aspect correction adds 0.00050 degrees ( 1.80 arcsec) to Dec
Total aspect correction is 4.66 arcsec
Star catalogs centered at 248.2103 , 78.4929 with radius 5.60 arc min.
n_usno: 244 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.19846
RA DEC Mag Color
bright star 0: 247.99194 (16:31:58.07) 78.50935 (+78:30:33.7) 11.20 USNO-V
bright star 1: 247.96951 (16:31:52.68) 78.46741 (+78:28:02.7) 11.28 USNO-V
Mean distance difference (CAT_DELTA) for 23 matched entries is 0.774" for 876016_g2373
Mean and std. dev of mag. difference (MAG_DELTA) are 1.718 and 0.834 for 876016_g2373
Found 4 entries without IDs and 1 entries that are acceptable afterglow candidates for 876016_g2373.
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.
1 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=248.2104 (16:32:50.50) DEC=78.5002 (+78:30:00.7)
XRT distances are from RA=248.2701 (16:33:04.82) DEC=78.4970 (+78:29:49.1)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 876016_g2373 with 5x5 stamp
ra=248.27091 (16:33:05.02) dec=78.49696 (+78:29:49.1) +/- 1.1" mag=17.80+/-0.35
dist=0.6 REFID=10
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=248.27091 (16:33:05.02) dec=78.49696 (+78:29:49.1) +/- 1.1" mag=17.80+/-0.35 dist=0.6 REFID=10
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 876016
------ Start for Possible Stand-alone Circular ----
In response to GRB181213 (Swift/BAT trigger 876016) at 12:57:38 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 2352 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 16:33:04.87 = 248.27028
DEC(J2000) = +78:29:48.8 = 78.49690
with a 90%-confidence error radius of about 0.75 arc sec. This position is 0.3
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.26 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.04.
------- notes for trigger 876016 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 181214d09h47m51s944575usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=876016
-expid=566401032 -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/876016/
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 566401032.8221 or about 2018:347:13:37:07 UT
Found 240 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 27 sources in
srclist catalog. Found 4 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 4 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
20.02 mag. Found 38 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 4% 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?
566401032 2351 WHITE 248.27091 78.49696 17.80/19.2 0.6 srclist Yes
566401032 2351 WHITE 248.27028 78.49690 17.26/20.0 0.3 image Yes
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 78.49690
GRB_ERROR: 0.75
GRB_RA: 248.27028
IMAGE_START_TIME: 13:37:07
MAGNITUDE: 17.26
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT