srclist overlap message for exposure 2 of trigger 852553
uvot_overlap.pl vrs. 2010-12-20b fem started at 180810d20h41m09s623090usUT
The observation of trigger 852553 started 2018-08-09T20:34:03.2
Examining file ./852553_g314_uvot_sky_srclist.fits
The exposure ID is 555539643
The exposure time is undefined.
The filter is U.
The uvot region is centered at (299.6951,-15.2999) with a roll angle of 273.8
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 (299.7117,-15.2928) with a radius of 1.000 arc min
This is 1.051 arc min from the center of the uvot region
The area of the BAT error circle is 3.14 sq. arc min
The UVOT/BAT overlap is 3.14 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (299.7000,-15.2989) with a radius of 0.023 arc min
This is 0.288 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 852553
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180810d20h41m18s000456usUT
Observation start time is 2018-08-09T20:34:03.2
Examining file ./852553_g314_uvot_catalog_srclist.fits
The exposure ID is 555539643
The exposure is 249.946 sec.
The bin size is 2 pixels
The filter is U
There are 78 detected source(s) for 852553_g314
Aspect correction adds -0.00110 degrees (-0.264 sec of time = -3.81 arc sec) to RA
Aspect correction adds 0.00020 degrees ( 0.71 arcsec) to Dec
Total aspect correction is 3.88 arcsec
Star catalogs centered at 299.6807 , -15.3001 with radius 6.42 arc min.
n_usno: 915 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.96822
RA DEC Mag Color
bright star 0: 299.67650 (19:58:42.36) -15.38528 (-15:23:07.0) 11.97 USNO-V
Mean distance difference (CAT_DELTA) for 66 matched entries is 0.825" for 852553_g314
Mean and std. dev of mag. difference (MAG_DELTA) are 1.735 and 0.464 for 852553_g314
Found 12 entries without IDs and 7 entries that are acceptable afterglow candidates for 852553_g314.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=299.7117 (19:58:50.80) DEC=-15.2928 (-15:17:34.0)
XRT distances are from RA=299.7000 (19:58:47.99) DEC=-15.2989 (-15:17:56.1)
-----------------
Entry 4 in the list of sources is a candidate afterglow for 852553_g314 with 3x3 stamp
ra=299.70180 (19:58:48.43) dec=-15.31969 (-15:19:10.9) +/- 1.1" mag=19.77+/-0.35
dist=75.0 REFID=78
*** The position of this source is inconsistent with the XRT position.
The position is 102.8 arc sec from the BAT position.
src: 4 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
299.7029 -15.3201 4.0 -1 USNO-B1 15.21 14.02 14.54
299.7067 -15.3224 19.6 -1 USNO-B1 20.40 19.45 19.87
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 16 in the list of sources is a candidate afterglow for 852553_g314 with 3x3 stamp
ra=299.73123 (19:58:55.50) dec=-15.31801 (-15:19:04.8) +/- 1.1" mag=18.47+/-0.35
dist=128.5 REFID=59
*** The position of this source is inconsistent with the XRT position.
The position is 113.4 arc sec from the BAT position.
src: 16 distr. of nearby unmatched sources: 1 0 0 0 0
Found 3 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
299.7296 -15.3142 14.8 -1 USNO-B1 20.67 19.35 19.94
299.7318 -15.3176 2.4 -1 USNO-B1 17.62 16.29 16.88 *
299.7329 -15.3169 7.1 -1 USNO-B1 16.33 15.00 15.59
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 18 in the list of sources is a candidate afterglow for 852553_g314 with 3x3 stamp
ra=299.73328 (19:58:55.99) dec=-15.31656 (-15:18:59.6) +/- 1.1" mag=18.05+/-0.35
dist=132.0 REFID=55
*** The position of this source is inconsistent with the XRT position.
The position is 113.8 arc sec from the BAT position.
src: 18 srclist_match has ID
src: 18 distr. of nearby unmatched sources: 0 2 0 0 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
299.7296 -15.3142 15.2 -1 USNO-B1 20.67 19.35 19.94
299.7318 -15.3176 6.4 -1 USNO-B1 17.62 16.29 16.88
299.7329 -15.3169 1.7 -1 USNO-B1 16.33 15.00 15.59 *
299.7377 -15.3181 16.2 -1 USNO-B1 20.69 19.76 20.17
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 19 in the list of sources is a candidate afterglow for 852553_g314 with 3x3 stamp
ra=299.73344 (19:58:56.03) dec=-15.31708 (-15:19:01.5) +/- 1.1" mag=18.31+/-0.35
dist=133.4 REFID=56
*** The position of this source is inconsistent with the XRT position.
The position is 115.6 arc sec from the BAT position.
src: 19 srclist_match has ID
src: 19 distr. of nearby unmatched sources: 0 2 0 0 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
299.7296 -15.3142 16.8 -1 USNO-B1 20.67 19.35 19.94
299.7318 -15.3176 6.1 -1 USNO-B1 17.62 16.29 16.88
299.7329 -15.3169 2.0 -1 USNO-B1 16.33 15.00 15.59 *
299.7377 -15.3181 15.1 -1 USNO-B1 20.69 19.76 20.17
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 25 in the list of sources is a candidate afterglow for 852553_g314 with 3x3 stamp
ra=299.67551 (19:58:42.12) dec=-15.26416 (-15:15:51.0) +/- 1.1" mag=19.29+/-0.35
dist=151.2 REFID=76
*** The position of this source is inconsistent with the XRT position.
The position is 162.4 arc sec from the BAT position.
src: 25 distr. of nearby unmatched sources: 0 0 0 0 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
299.6759 -15.2665 8.7 -1 USNO-B1 13.38 12.59 12.94 *
299.6747 -15.2621 8.0 -1 USNO-B1 19.23 18.64 18.90
299.6730 -15.2622 11.2 -1 USNO-B1 18.62 17.45 17.97
299.6740 -15.2594 17.8 -1 USNO-B1 16.73 15.75 16.18
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 26 in the list of sources is a candidate afterglow for 852553_g314 with 3x3 stamp
ra=299.66594 (19:58:39.83) dec=-15.32647 (-15:19:35.3) +/- 1.1" mag=18.87+/-0.35
dist=154.2 REFID=65
*** The position of this source is inconsistent with the XRT position.
The position is 199.8 arc sec from the BAT position.
src: 26 srclist_match has ID
src: 26 distr. of nearby unmatched sources: 0 0 0 0 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
299.6680 -15.3242 10.8 -1 USNO-B1 16.46 15.21 15.77
299.6655 -15.3267 1.8 -1 USNO-B1 16.88 99.99 99.99 *
299.6644 -15.3270 5.8 -1 USNO-B1 14.48 13.37 13.86
299.6623 -15.3274 13.1 -1 USNO-B1 20.87 19.93 20.35
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 41 in the list of sources is a candidate afterglow for 852553_g314 with 3x3 stamp
ra=299.75145 (19:59:00.35) dec=-15.27725 (-15:16:38.1) +/- 1.1" mag=19.23+/-0.35
dist=195.1 REFID=77
*** The position of this source is inconsistent with the XRT position.
The position is 149.0 arc sec from the BAT position.
src: 41 distr. of nearby unmatched sources: 0 0 0 0 1
Found 3 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
299.7495 -15.2755 9.2 -1 USNO-B1 17.90 17.16 17.48
299.7508 -15.2773 2.2 -1 USNO-B1 18.09 17.06 17.52 *
299.7530 -15.2786 7.4 -1 USNO-B1 20.91 19.92 20.36
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:
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.12, XRT distances < 5",
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 2 of trigger 852553
------ Start for Possible Stand-alone Circular ----
In response to GRB180809 (Swift/BAT trigger 852553) at 20:28:48 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
293 seconds after the BAT trigger. No credible afterglow candidate has been
found in the initial data products. The 2.7'x2.7' sub-image covers 100% of the
XRT error circle. The typical 3-sigma upper limit has been about 19.2 mag. The
8'x8' region for the list of sources generated on-board covers 100% of the XRT
error circle. The list of sources is typically complete to about 18.0 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.16.
------- notes for trigger 852553 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180810d20h41m20s106902usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=852553
-expid=555539643 -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/852553/
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 555539643.20584 or about 2018:221:20:33:58 UT
Found 911 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 15% of the srclist region. Found 78 sources in
srclist catalog. Found 12 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.12 mag.
Found 16 source(s) in Genie image catalog. Found 0 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.37 mag. Found 140 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
16% of the Genie image region.
Genie image analysis:
Found 20388.9 counts in the large background region of 6195.0 pixels or a rate
of 3.291 counts/pixel in a radius of 45.0 arcsec. Based on this background, the
typical 5-sigma UL at a random point in the Genie image is 19.86 mag. for a
4-arcsec aperture.
Found 589.0 counts in the XRT position region of 199.0 pixels or a rate of
2.960 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.180 +/- 0.105 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.315 cps or 19.63 mag. The closest srclist
source has ra= 299.6905 dec= -15.2910 mag=15.47 sep=43.32". The closest Genie
source has ra= 299.6907 dec= -15.2910 mag=14.80 sep=43.03".
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?
555539643 293 U srclist found no candidates.
555539643 293 U image found no candidates.
List afterglow candidates for other finding charts.
555539431 81 WHITE 299.69979 -15.29926 19.27/19.2 1.4 srclist Yes
555539431 81 WHITE 299.69983 -15.29915 18.91/20.6 0.9 image Yes
555540220 870 WHITE srclist found no candidates.
555540220 870 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: -15.29892
GRB_ERROR: 5
GRB_RA: 299.69996
IMAGE_START_TIME: 20:33:58
MAGNITUDE: 19.6
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT