srclist overlap message for exposure 3 of trigger 882809
uvot_overlap.pl vrs. 2010-12-20b fem started at 190109d14h24m36s530070usUT
The observation of trigger 882809 started 2019-01-09T12:10:49.6
Examining file ./882809_g879_uvot_sky_srclist.fits
The exposure ID is 568728649
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (55.5830,63.5792) with a roll angle of 292.2
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 (55.5950,63.5780) with a radius of 3.000 arc min
This is 0.329 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 (55.4873,63.5920) with a radius of 0.030 arc min
This is 2.669 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.003 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 3 of trigger 882809
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190109d14h25m05s013859usUT
Observation start time is 2019-01-09T12:10:49.6
Examining file ./882809_g879_uvot_catalog_srclist.fits
The exposure ID is 568728649
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 882809_g879
*** 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 882809_g879 has mag 19.09
Aspect correction adds -0.00123 degrees (-0.295 sec of time = -1.97 arc sec) to RA
Aspect correction adds 0.00010 degrees ( 0.37 arcsec) to Dec
Total aspect correction is 2.00 arcsec
Star catalogs centered at 55.5726 , 63.5753 with radius 8.50 arc min.
n_usno: 2180 n_gsc: 0
*** WARNING -- bright star catalog has 5 entries brighter than 12 mag
The brightest has mag 9.78288
RA DEC Mag Color
bright star 0: 55.64073 (03:42:33.77) 63.59154 (+63:35:29.5) 11.89 USNO-V
bright star 1: 55.67592 (03:42:42.22) 63.60618 (+63:36:22.3) 9.78 USNO-V
bright star 2: 55.84538 (03:43:22.89) 63.59804 (+63:35:53.0) 11.29 USNO-V
bright star 3: 55.84692 (03:43:23.26) 63.59735 (+63:35:50.5) 10.84 USNO-V
bright star 4: 55.84839 (03:43:23.61) 63.59620 (+63:35:46.3) 11.07 USNO-R
Mean distance difference (CAT_DELTA) for 177 matched entries is 0.783" for 882809_g879
Mean and std. dev of mag. difference (MAG_DELTA) are 1.556 and 0.468 for 882809_g879
Found 22 entries without IDs and 3 entries that are acceptable afterglow candidates for 882809_g879.
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.
16 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=55.5950 (03:42:22.80) DEC=63.5780 (+63:34:40.8)
XRT distances are from RA=55.4873 (03:41:56.94) DEC=63.5920 (+63:35:31.3)
-----------------
Entry 15 in the list of sources is a candidate afterglow for 882809_g879 with 1x1 stamp
ra=55.62484 (03:42:29.96) dec=63.60809 (+63:36:29.1) +/- 1.1" mag=18.88+/-0.35
dist=227.6 REFID=157
*** The position of this source is inconsistent with the XRT position.
The position is 118.4 arc sec from the BAT position.
src: 15 srclist_match has ID
src: 15 distr. of nearby unmatched sources: 0 0 0 0 0
Found 8 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
55.6283 63.6033 18.1 -1 USNO-B1 19.82 18.57 19.13
55.6240 63.6083 1.5 -1 USNO-B1 18.05 17.52 17.76 *
55.6236 63.6085 2.5 -1 USNO-B1 18.63 16.07 17.21 *
55.6232 63.6089 4.0 -1 USNO-B1 18.30 16.05 17.05
55.6328 63.6068 13.6 -1 USNO-B1 18.93 17.08 17.90
55.6346 63.6065 16.7 -1 USNO-B1 19.01 17.97 18.43
55.6326 63.6073 12.8 -1 USNO-B1 20.19 19.60 19.86
55.6354 63.6065 17.8 -1 USNO-B1 99.99 18.88 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 40 in the list of sources is a candidate afterglow for 882809_g879 with 1x1 stamp
ra=55.49205 (03:41:58.09) dec=63.58571 (+63:35:08.6) +/- 1.1" mag=17.22+/-0.35
dist=24.0 REFID=162
*** The position of this source is inconsistent with the XRT position.
The position is 167.2 arc sec from the BAT position.
src: 40 distr. of nearby unmatched sources: 0 0 0 1 0
Found 7 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
55.4980 63.5900 18.2 -1 USNO-B1 18.56 16.84 17.60
55.4929 63.5848 3.7 -1 USNO-B1 13.47 12.70 13.04 *
55.4963 63.5908 19.4 -1 USNO-B1 20.75 18.19 19.33
55.4871 63.5861 8.0 -1 USNO-B1 15.88 14.02 14.85
55.4863 63.5860 9.2 -1 USNO-B1 15.56 14.61 15.03
55.4847 63.5863 11.9 -1 USNO-B1 13.75 12.59 13.11 *
55.4835 63.5841 14.9 -1 USNO-B1 21.14 19.88 20.44
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 882809_g879 with 1x1 stamp
ra=55.50811 (03:42:01.95) dec=63.60400 (+63:36:14.4) +/- 1.1" mag=18.48+/-0.35
dist=54.5 REFID=184
*** The position of this source is inconsistent with the XRT position.
The position is 167.7 arc sec from the BAT position.
src: 41 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
55.5104 63.6002 14.2 -1 USNO-B1 21.12 19.69 20.32
55.5096 63.6042 2.5 -1 USNO-B1 15.88 14.43 15.07 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 1 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
55.4927 63.5925 9.0 -1 USNO-B1 18.66 17.23 17.87
The closest star is 8.97" away.
List UVOT sources within 10" of the XRT position:
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: 0 good candidate(s) found.
srclist paragraph message for exposure 3 of trigger 882809
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no overlap
SRCLIST PROBLEM: srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB190109 (Swift/BAT trigger 882809) at 11:56:09 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 858 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 none of
the XRT error circle. 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 mag. No correction has been made for the expected
extinction corresponding to E(B-V) of 0.72.
------- notes for trigger 882809 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190109d14h25m10s780774usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=882809
-expid=568728649 -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/882809/
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 568728649.56884 or about 2019:009:12:10:44 UT
Found 2176 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 20% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 22 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
Found 27 source(s) in Genie image catalog. Found 1 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.69 mag. Found 196 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
23% of the Genie image region. The XRT position was OUTSIDE the star catalog
search region.
Genie image analysis:
Found 53152.8 counts in the large background region of 5665.0 pixels or a rate
of 9.383 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 20.13 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 19.09 mag. The closest srclist
source has ra= 55.4864 dec= 63.5856 mag=17.55 sep=23.11". The closest Genie
source has ra= 55.5440 dec= 63.5854 mag=21.05 sep=94.00".
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?
568728649 857 WHITE srclist found no candidates.
568728649 857 WHITE image found no candidates.
List afterglow candidates for other finding charts.
568727882 90 WHITE srclist found no candidates.
568727882 90 WHITE image found no candidates.
568728094 302 U srclist found no candidates.
568728094 302 U image found no candidates.
------- Tokens for Quick GCN -------