image overlap message for exposure 2 of trigger 899979
uvot_overlap.pl vrs. 2010-12-20b fem started at 190423d02h44m37s726834usUT
The observation of trigger 899979 started 2019-04-22T23:10:17.8
Examining file ./899979_g887_uvot_sky_image.fits
The exposure ID is 577667417
The exposure time is 149.879 (seconds)
The filter is WHITE.
The uvot region is centered at (182.1192,-60.2433) with a roll angle of 215.8
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (182.1240,-60.2380) with a radius of 3.000 arc min
This is 0.346 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 7.17 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (182.0345,-60.2242) with a radius of 0.030 arc min
This is 2.768 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 0.000 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 899979
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190423d02h44m54s142677usUT
Observation start time is 2019-04-22T23:10:17.8
Examining file ./899979_g887_uvot_catalog_image.fits
The exposure ID is 577667417
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is WHITE
There are 72 detected source(s) for 899979_g887
Aspect correction adds -0.00110 degrees (-0.264 sec of time = -1.96 arc sec) to RA
Aspect correction adds -0.00130 degrees (-4.70 arcsec) to Dec
Total aspect correction is 5.09 arcsec
Star catalogs centered at 182.1153 , -60.2435 with radius 2.69 arc min.
n_usno: 417 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.9133
RA DEC Mag Color
bright star 0: 182.15575 (12:08:37.38) -60.20486 (-60:12:17.5) 11.91 USNO-V
Mean distance difference (CAT_DELTA) for 68 matched entries is 0.491" for 899979_g887
Mean and std. dev of mag. difference (MAG_DELTA) are 1.836 and 0.707 for 899979_g887
Found 5 entries without IDs and 5 entries that are acceptable afterglow candidates for 899979_g887.
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=182.1240 (12:08:29.76) DEC=-60.2380 (-60:14:16.8)
XRT distances are from RA=182.0345 (12:08:08.28) DEC=-60.2242 (-60:13:27.3)
-----------------
Entry 11 in the list of sources is a candidate afterglow for 899979_g887 with genie
ra=182.14033 (12:08:33.68) dec=-60.24446 (-60:14:40.0) +/- 0.7" mag=19.94+/-0.20
dist=202.6 REFID=44 major=0.9 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 37.3 arc sec from the BAT position.
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
182.1328 -60.2437 13.7 -1 USNO-B1 16.80 16.32 16.53
182.1351 -60.2459 10.8 -1 USNO-B1 17.99 16.59 17.21
182.1357 -60.2470 12.3 -1 USNO-B1 16.83 16.04 16.39
182.1456 -60.2428 11.1 -1 USNO-B1 18.55 16.62 17.47
182.1454 -60.2401 18.0 -1 USNO-B1 16.30 15.47 15.84
182.1459 -60.2489 18.8 -1 USNO-B1 17.86 16.23 16.95
182.1489 -60.2437 15.6 -1 USNO-B1 17.48 16.80 17.10
182.1487 -60.2470 17.5 -1 USNO-B1 15.62 13.97 14.70
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 20 in the list of sources is a candidate afterglow for 899979_g887 with genie
ra=182.12334 (12:08:29.60) dec=-60.25136 (-60:15:04.9) +/- 0.7" mag=19.17+/-0.16
dist=186.3 REFID=60 major=0.9 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 48.1 arc sec from the BAT position.
Found 9 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
182.1186 -60.2510 8.6 -1 USNO-B1 16.62 15.64 16.08
182.1285 -60.2486 13.4 -1 USNO-B1 17.87 17.13 17.46
182.1228 -60.2515 1.0 -1 USNO-B1 17.50 16.71 17.06 *
182.1298 -60.2490 14.3 -1 USNO-B1 17.15 16.30 16.68
182.1163 -60.2528 13.5 -1 USNO-B1 17.72 16.27 16.91
182.1207 -60.2530 7.5 -1 USNO-B1 18.16 15.83 16.86
182.1203 -60.2531 8.3 -1 USNO-B1 16.90 16.31 16.57
182.1227 -60.2531 6.4 -1 USNO-B1 99.99 16.95 99.99
182.1307 -60.2541 16.3 -1 USNO-B1 17.84 17.39 17.59
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 27 in the list of sources is a candidate afterglow for 899979_g887 with genie
ra=182.10946 (12:08:26.27) dec=-60.22492 (-60:13:29.7) +/- 0.8" mag=20.07+/-0.21
dist=134.0 REFID=9 major=0.8 minor=0.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 53.8 arc sec from the BAT position.
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
182.1114 -60.2254 3.9 -1 USNO-B1 17.81 16.24 16.94
182.1101 -60.2251 1.4 -1 USNO-B1 17.51 16.46 16.93 *
182.1101 -60.2244 2.3 -1 USNO-B1 99.99 17.93 99.99 *
182.0990 -60.2247 18.8 -1 USNO-B1 18.17 17.28 17.68
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 40 in the list of sources is a candidate afterglow for 899979_g887 with genie
ra=182.13040 (12:08:31.30) dec=-60.22031 (-60:13:13.1) +/- 0.9" mag=20.53+/-0.26
dist=172.1 REFID=6 major=0.8 minor=0.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 64.7 arc sec from the BAT position.
Found 10 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
182.1252 -60.2244 17.4 -1 USNO-B1 15.55 14.82 15.14
182.1225 -60.2237 18.6 -1 USNO-B1 17.69 16.77 17.18
182.1233 -60.2204 12.7 -1 USNO-B1 17.15 16.50 16.79
182.1324 -60.2201 3.7 -1 USNO-B1 99.99 16.81 99.99
182.1365 -60.2202 10.9 -1 USNO-B1 16.76 15.48 16.05
182.1345 -60.2197 7.6 -1 USNO-B1 17.10 16.42 16.72
182.1285 -60.2185 7.4 -1 USNO-B1 16.50 15.70 16.05
182.1378 -60.2201 13.3 -1 USNO-B1 16.38 15.80 16.06
182.1394 -60.2205 16.1 -1 USNO-B1 17.77 99.99 99.99
182.1291 -60.2162 14.9 -1 USNO-B1 17.08 16.47 16.74
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 44 in the list of sources is a candidate afterglow for 899979_g887 with genie
ra=182.14703 (12:08:35.29) dec=-60.25237 (-60:15:08.5) +/- 0.7" mag=19.57+/-0.17
dist=225.1 REFID=57 major=1.1 minor=0.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 66.1 arc sec from the BAT position.
Found 6 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
182.1394 -60.2529 13.8 -1 USNO-B1 18.19 17.68 17.91
182.1459 -60.2489 12.7 -1 USNO-B1 17.86 16.23 16.95
182.1487 -60.2470 19.4 -1 USNO-B1 15.62 13.97 14.70
182.1467 -60.2521 1.3 -1 USNO-B1 17.88 16.27 16.98 *
182.1508 -60.2497 11.8 -1 USNO-B1 16.67 14.62 15.53
182.1521 -60.2554 14.3 -1 USNO-B1 16.60 16.00 16.26
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 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
182.0344 -60.2257 5.3 -1 USNO-B1 15.62 14.81 15.17
The closest star is 5.30" away.
List UVOT sources within 10" of the XRT position:
There are 55452.680 counts in the bkg source region of 4028.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 13.767 counts/pixel (5-sig UL in 4" is 19.93 mag) for 899979_g887
Do not compute counts in XRT region because position is too far from center.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 20.48, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 899979_577667417_190423d02h44m54s142677usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(182.1192,-60.2433,45")
fk5;-circle(182.123883781827,-60.2376454311441,6")
fk5;-circle(182.124766377766,-60.2408804988482,6")
fk5;-circle(182.130125188905,-60.2399348859638,6")
fk5;-circle(182.12068759439,-60.2345126145681,6")
fk5;-circle(182.117003765537,-60.240086664294,6")
fk5;-circle(182.114053410842,-60.2354194613296,6")
fk5;-circle(182.112482650991,-60.2398038784824,6")
fk5;-circle(182.132758034963,-60.2436733498258,6")
fk5;-circle(182.106663105892,-60.2370856092572,6")
fk5;-circle(182.118529966786,-60.2293571264746,6")
fk5;-circle(182.106778801415,-60.234812834845,6")
fk5;-circle(182.140328754257,-60.2444576838807,6")
fk5;-circle(182.145681399543,-60.2401345859994,6")
fk5;-circle(182.136027682873,-60.2472425723919,6")
fk5;-circle(182.107334717331,-60.2460386504047,6")
fk5;-circle(182.130246513735,-60.2491504988029,6")
fk5;-circle(182.103409504831,-60.2435065969453,6")
fk5;-circle(182.118598212874,-60.2510146237524,6")
fk5;-circle(182.123335849812,-60.2513628083936,6")
fk5;-circle(182.099822860108,-60.2439384704883,6")
fk5;-circle(182.120147258941,-60.2530952601699,6")
fk5;-circle(182.116409744211,-60.2527954912112,6")
fk5;-circle(182.102715552935,-60.2497019371257,6")
fk5;-circle(182.092441516376,-60.2411368254313,6")
fk5;-circle(182.097371805677,-60.2481799123376,6")
fk5;-circle(182.099055143357,-60.2503823441346,6")
image paragraph message for exposure 2 of trigger 899979
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 GRB190422 (Swift/BAT trigger 899979) at 22:55:29 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 865 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 0.00% of the XRT error circle. No correction has been made for
the large, but uncertain, extinction expected.
------- notes for trigger 899979 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190423d02h44m58s217897usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=899979
-expid=577667417 -meonly -msg_image
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/899979/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Large extinction of 5.23 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 577667417.78562 or about 2019:112:23:10:12 UT
Found 3581 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 38% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 11 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 72 source(s) in Genie image catalog. Found 5 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.48 mag. Found 413 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
39% of the Genie image region.
Genie image analysis:
Found 55452.7 counts in the large background region of 4028.0 pixels or a rate
of 13.767 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 19.93 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 18.74 mag. The closest srclist
source has ra= 182.0441 dec= -60.2877 mag=18.44 sep=228.99". The closest Genie
source has ra= 182.0669 dec= -60.2331 mag=20.05 sep=66.10".
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?
577667417 865 WHITE srclist found no candidates.
577667417 865 WHITE image found no candidates.
List afterglow candidates for other finding charts.
577667083 531 WHITE srclist found no candidates.
577667083 531 WHITE image found no candidates.
------- Tokens for Quick GCN -------