srclist overlap message for exposure 2 of trigger 809374
uvot_overlap.pl vrs. 2010-12-20b fem started at 180210d00h30m59s217265usUT
The observation of trigger 809374 started 2018-02-10T00:24:08.5
Examining file ./809374_g892_uvot_sky_srclist.fits
The exposure ID is 539915048
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (299.7504,35.0360) with a roll angle of 151.3
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 (299.7470,35.0380) with a radius of 3.000 arc min
This is 0.205 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 (299.7140,35.0784) with a radius of 0.142 arc min
This is 3.105 arc min from the center of the uvot region
The area of the XRT error circle is 0.063 sq. arc min
The UVOT/XRT overlap is 0.063 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 809374
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180210d00h31m08s916882usUT
Observation start time is 2018-02-10T00:24:08.5
Examining file ./809374_g892_uvot_catalog_srclist.fits
The exposure ID is 539915048
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 809374_g892
*** 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 809374_g892 has mag 18.62
Aspect correction adds -0.00106 degrees (-0.255 sec of time = -3.14 arc sec) to RA
Aspect correction adds 0.00044 degrees ( 1.57 arcsec) to Dec
Total aspect correction is 3.51 arcsec
Star catalogs centered at 299.7535 , 35.0349 with radius 8.53 arc min.
n_usno: 2703 n_gsc: 3845
*** WARNING -- bright star catalog has 14 entries brighter than 12 mag
The brightest has mag 8.83614
RA DEC Mag Color
bright star 0: 299.78774 (19:59:09.06) 35.03084 (+35:01:51.0) 11.76 USNO-V
bright star 1: 299.68381 (19:58:44.11) 35.03669 (+35:02:12.1) 11.38 USNO-V
bright star 2: 299.71711 (19:58:52.11) 35.10518 (+35:06:18.7) 9.55 USNO-V
bright star 3: 299.66151 (19:58:38.76) 35.06923 (+35:04:09.2) 8.84 USNO-V
bright star 4: 299.66580 (19:58:39.79) 34.99329 (+34:59:35.9) 11.08 USNO-V
bright star 5: 299.65338 (19:58:36.81) 35.05796 (+35:03:28.7) 10.73 GSC-F
bright star 6: 299.77936 (19:59:07.05) 35.14202 (+35:08:31.3) 11.33 USNO-V
bright star 7: 299.62729 (19:58:30.55) 35.07157 (+35:04:17.6) 11.39 GSC-F
bright star 8: 299.65370 (19:58:36.89) 34.95537 (+34:57:19.3) 11.13 USNO-V
bright star 9: 299.89393 (19:59:34.54) 35.03115 (+35:01:52.1) 11.25 USNO-V
bright star 10: 299.89972 (19:59:35.93) 35.05454 (+35:03:16.3) 11.57 USNO-V
bright star 11: 299.84265 (19:59:22.24) 35.06398 (+35:03:50.3) 11.63 GSC-F
bright star 12: 299.85678 (19:59:25.63) 35.08498 (+35:05:05.9) 11.71 GSC-F
bright star 13: 299.87378 (19:59:29.71) 35.08835 (+35:05:18.1) 12.00 GSC-F
Mean distance difference (CAT_DELTA) for 156 matched entries is 0.812" for 809374_g892
Mean and std. dev of mag. difference (MAG_DELTA) are 1.823 and 0.476 for 809374_g892
Found 38 entries without IDs and 0 entries that are acceptable afterglow candidates for 809374_g892.
Acceptable entries have no ID, XRT distances < 15", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
24 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=299.7470 (19:58:59.28) DEC=35.0380 (+35:02:16.8)
XRT distances are from RA=299.7140 (19:58:51.37) DEC=35.0784 (+35:04:42.1)
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 68:
ra=299.71716 dec= 35.10356 +/- 1.1" mag=16.22+/-0.35 dist=91.2 REFID=159
Found 3 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
299.7141 35.0800 5.9 -1 USNO-B1 19.98 17.55 18.63
299.7145 35.0809 9.1 -1 USNO-B1 18.23 16.02 17.00
299.7144 35.0809 9.0 -1 GSC2.3 16.56 18.99 99.99
The closest star is 5.94" 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 < 15",
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 809374
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.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB180210 (Swift/BAT trigger 809374) at 00:09:15 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 872 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 large, but
uncertain, extinction expected.
------- notes for trigger 809374 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180210d00h31m16s491353usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=809374
-expid=539915048 -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/809374/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for bat position. Unreliable extinction found for
xrt position. XRT position found for srclist. XRT position found for Genie
image. BAT position found.
UVOT exposure began at MET 539915048.4998 or about 2018:041:00:24:03 UT
Found 3845 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 36% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 38 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 14 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 20.11 mag. Found 288 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
34% of the Genie image region. The XRT position was OUTSIDE the star catalog
search region.
Genie image analysis:
Found 167082.3 counts in the large background region of 6143.0 pixels or a rate
of 27.199 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 19.56 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 18.62 mag. The closest srclist
source has ra= 299.7149 dec= 35.0895 mag=14.47 sep=40.08". The closest Genie
source has ra= 299.7242 dec= 35.0463 mag=17.96 sep=119.18".
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?
539915048 872 WHITE srclist found no candidates.
539915048 872 WHITE image found no candidates.
List afterglow candidates for other finding charts.
539914593 417 WHITE srclist found no candidates.
539914593 417 WHITE image found no candidates.
------- Tokens for Quick GCN -------