srclist overlap message for exposure 2 of trigger 954519
uvot_overlap.pl vrs. 2010-12-20b fem started at 200206d03h53m34s601213usUT
The observation of trigger 954519 started 2020-02-05T19:36:29.1
Examining file ./954519_g885_uvot_sky_srclist.fits
The exposure ID is 602624189
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (107.7862,-56.4935) with a roll angle of 210.7
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 (107.8030,-56.4810) with a radius of 3.000 arc min
This is 0.936 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
The XRT error circle is centered at (107.7876,-56.4874) with a radius of 0.027 arc min
This is 0.370 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 2 of trigger 954519
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200206d03h53m45s312559usUT
Observation start time is 2020-02-05T19:36:29.1
Examining file ./954519_g885_uvot_catalog_srclist.fits
The exposure ID is 602624189
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 954519_g885
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 954519_g885 has mag 19.60
Aspect correction adds 0.00231 degrees (0.553 sec of time = 4.58 arc sec) to RA
Aspect correction adds -0.00058 degrees (-2.08 arcsec) to Dec
Total aspect correction is 5.03 arcsec
Star catalogs centered at 107.7874 , -56.4902 with radius 8.81 arc min.
n_usno: 1124 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 10.5518
RA DEC Mag Color
bright star 0: 107.84202 (07:11:22.08) -56.43733 (-56:26:14.4) 11.81 USNO-V
bright star 1: 107.72001 (07:10:52.80) -56.57709 (-56:34:37.5) 11.08 USNO-V
bright star 2: 107.90378 (07:11:36.91) -56.58204 (-56:34:55.3) 10.55 USNO-V
Mean distance difference (CAT_DELTA) for 176 matched entries is 0.806" for 954519_g885
Mean and std. dev of mag. difference (MAG_DELTA) are 1.594 and 0.407 for 954519_g885
Found 14 entries without IDs and 1 entries that are acceptable afterglow candidates for 954519_g885.
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.
7 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=107.8030 (07:11:12.72) DEC=-56.4810 (-56:28:51.6)
XRT distances are from RA=107.7876 (07:11:09.03) DEC=-56.4874 (-56:29:14.7)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 954519_g885 with 3x3 stamp
ra=107.78811 (07:11:09.15) dec=-56.48768 (-56:29:15.7) +/- 1.1" mag=18.63+/-0.35
dist=1.3 REFID=97
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 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
107.7955 -56.4907 18.3 -1 USNO-B1 20.25 18.21 19.12
107.7866 -56.4837 14.5 -1 USNO-B1 17.54 15.92 16.64
##### 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=107.78811 (07:11:09.15) dec=-56.48768 (-56:29:15.7) +/- 1.1" mag=18.63+/-0.35 dist=1.3 REFID=97
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 2 of trigger 954519
------ Start for Possible Stand-alone Circular ----
In response to GRB200205 (Swift/BAT trigger 954519) at 19:21:43 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 861 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 07:11:09.15 = 107.78813
DEC(J2000) = -56:29:15.2 = -56.48755
with a 90%-confidence error radius of about 0.62 arc sec. This position is 1.1
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.88 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.11.
------- notes for trigger 954519 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200206d03h53m49s077635usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=954519
-expid=602624189 -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/954519/
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 602624189.0812 or about 2020:036:19:36:24 UT
Found 1120 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 10% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 14 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 14 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
20.86 mag. Found 98 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 9% 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?
602624189 861 WHITE 107.78811 -56.48768 18.63/19.2 1.3 srclist Yes
602624189 861 WHITE 107.78813 -56.48755 17.88/20.9 1.1 image Yes
List afterglow candidates for other finding charts.
602623679 351 WHITE 107.78836 -56.48789 17.82/19.2 2.2 srclist Yes
602623679 351 WHITE 107.78811 -56.48753 16.43/20.9 1.0 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -56.48755
GRB_ERROR: 0.62
GRB_RA: 107.78813
IMAGE_START_TIME: 19:36:24
MAGNITUDE: 17.88
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT