srclist overlap message for exposure 1 of trigger 1088376
uvot_overlap.pl vrs. 2010-12-20b fem started at 211208d00h03m35s756419usUT
The observation of trigger 1088376 started 2021-12-07T20:54:49.0
Examining file ./1088376_g112_uvot_sky_srclist.fits
The exposure ID is 660603289
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (149.6291,-24.3550) with a roll angle of 116.8
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 (149.6250,-24.3520) with a radius of 3.000 arc min
This is 0.290 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 (149.6238,-24.3597) with a radius of 0.038 arc min
This is 0.405 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1088376
find_uvot_ag.pl vrs. 2020-10-30 fem started at 211208d00h03m40s426622usUT
Observation start time is 2021-12-07T20:54:49.0
Examining file ./1088376_g112_uvot_catalog_srclist.fits
The exposure ID is 660603289
The exposure is 149.824 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 1088376_g112
*** 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 1088376_g112 has mag 19.67
Aspect correction adds -0.00017 degrees (-0.040 sec of time = -0.54 arc sec) to RA
Aspect correction adds 0.00092 degrees ( 3.30 arcsec) to Dec
Total aspect correction is 3.34 arcsec
Star catalogs centered at 149.6294 , -24.3615 with radius 5.81 arc min.
n_usno: 344 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 8.07252
RA DEC Mag Color
bright star 0: 149.64403 (09:58:34.57) -24.33615 (-24:20:10.1) 8.07 USNO-V
bright star 1: 149.67206 (09:58:41.29) -24.40719 (-24:24:25.9) 11.10 USNO-V
Mean distance difference (CAT_DELTA) for 58 matched entries is 0.604" for 1088376_g112
Mean and std. dev of mag. difference (MAG_DELTA) are 1.589 and 0.623 for 1088376_g112
Found 132 entries without IDs and 5 entries that are acceptable afterglow candidates for 1088376_g112.
Acceptable entries have no ID, XRT distances < 5.75", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
124 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=149.6250 (09:58:30.00) DEC=-24.3520 (-24:21:07.2)
XRT distances are from RA=149.6238 (09:58:29.71) DEC=-24.3597 (-24:21:34.8)
*** WARNING 69 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1088376_g112 with 3x3 stamp
ra=149.62419 (09:58:29.81) dec=-24.35877 (-24:21:31.6) +/- 1.1" mag=18.12+/-0.35
dist=3.5 REFID=24
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
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1088376_g112 with 1x1 stamp
ra=149.63303 (09:58:31.93) dec=-24.36357 (-24:21:48.8) +/- 1.1" mag=19.28+/-0.35
dist=33.4 REFID=135
*** The position of this source is inconsistent with the XRT position.
The position is 49.3 arc sec from the BAT position.
src: 1 distr. of nearby unmatched sources: 0 0 0 1 0
Found 4 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
149.6291 -24.3631 13.2 -1 USNO-B1 19.88 19.11 19.45
149.6339 -24.3644 4.2 -1 USNO-B1 15.94 14.58 15.18
149.6298 -24.3673 17.3 -1 USNO-B1 19.32 18.95 19.11
149.6380 -24.3618 17.4 -1 USNO-B1 15.75 14.15 14.86
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1088376_g112 with 3x3 stamp
ra=149.63729 (09:58:32.95) dec=-24.36098 (-24:21:39.5) +/- 1.1" mag=19.51+/-0.35
dist=44.5 REFID=105
*** The position of this source is inconsistent with the XRT position.
The position is 51.7 arc sec from the BAT position.
src: 2 distr. of nearby unmatched sources: 0 0 0 1 0
Found 2 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
149.6339 -24.3644 16.4 -1 USNO-B1 15.94 14.58 15.18
149.6380 -24.3618 3.7 -1 USNO-B1 15.75 14.15 14.86 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 137 in the list of sources is a candidate afterglow for 1088376_g112 with 1x1 stamp
ra=149.60735 (09:58:25.76) dec=-24.32320 (-24:19:23.5) +/- 1.1" mag=19.51+/-0.35
dist=141.9 REFID=186
*** The position of this source is inconsistent with the XRT position.
The position is 118.7 arc sec from the BAT position.
src: 137 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
149.6083 -24.3242 4.9 -1 USNO-B1 15.68 13.99 14.74
149.6050 -24.3227 8.1 -1 USNO-B1 18.90 16.06 17.32
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 148 in the list of sources is a candidate afterglow for 1088376_g112 with 1x1 stamp
ra=149.64854 (09:58:35.65) dec=-24.31557 (-24:18:56.0) +/- 1.1" mag=19.43+/-0.35
dist=178.3 REFID=126
*** The position of this source is inconsistent with the XRT position.
The position is 152.2 arc sec from the BAT position.
src: 148 distr. of nearby unmatched sources: 1 0 0 0 0
Found 5 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
149.6442 -24.3194 19.8 -1 USNO-B1 19.38 19.71 19.56
149.6441 -24.3169 15.3 -1 USNO-B1 19.47 19.30 19.38
149.6441 -24.3156 14.5 -1 USNO-B1 19.67 18.88 19.23
149.6443 -24.3150 14.1 -1 USNO-B1 19.80 19.72 19.76
149.6481 -24.3161 2.6 -1 USNO-B1 19.21 17.62 18.33 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are 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=149.62419 (09:58:29.81) dec=-24.35877 (-24:21:31.6) +/- 1.1" mag=18.12+/-0.35 dist=3.5 REFID=24
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, XRT distances < 5.75",
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 1088376
------ Start for Possible Stand-alone Circular ----
In response to GRB211207 (Swift/BAT trigger 1088376) at 20:52:56 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 84 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 09:58:29.78 = 149.62408
DEC(J2000) = -24:21:31.1 = -24.35863
with a 90%-confidence error radius of about 0.62 arc sec. This position is 3.9
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.45 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.050.
------- notes for trigger 1088376 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 211208d00h03m46s416080usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1088376
-expid=660603289 -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/1088376/
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 660603289.01586 or about 2021:341:20:54:44 UT
Found 340 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 132 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 3 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.55 mag. Found 90 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 10% 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?
660603289 84 WHITE 149.62419 -24.35877 18.12/19.2 3.5 srclist Yes
660603289 84 WHITE 149.62408 -24.35863 17.45/20.6 3.9 image Yes
List afterglow candidates for other finding charts.
660603501 296 U 149.62412 -24.35901 18.21/18.1 2.8 srclist Yes
660603501 296 U 149.62399 -24.35872 18.16/20.2 3.9 image Yes
660604080 875 WHITE srclist found no candidates.
660604080 875 WHITE 149.62399 -24.35858 19.74/20.4 4.3 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -24.35863
GRB_ERROR: 0.62
GRB_RA: 149.62408
IMAGE_START_TIME: 20:54:44
MAGNITUDE: 17.45
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT