image overlap message for exposure 1 of trigger 850471
uvot_overlap.pl vrs. 2010-12-20b fem started at 180728d23h43m32s617921usUT
The observation of trigger 850471 started 2018-07-28T17:58:22.5
Examining file ./850471_g1761_uvot_sky_image.fits
The exposure ID is 554493502
The exposure time is 149.879 (seconds)
The filter is WHITE.
The uvot region is centered at (253.5544,-54.0486) with a roll angle of 251.7
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 (253.5690,-54.0310) with a radius of 3.000 arc min
This is 1.174 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 (253.5651,-54.0445) with a radius of 0.025 arc min
This is 0.449 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
image afterglow message for exposure 1 of trigger 850471
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180728d23h43m39s076154usUT
Observation start time is 2018-07-28T17:58:22.5
Examining file ./850471_g1761_uvot_catalog_image.fits
The exposure ID is 554493502
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is WHITE
There are 79 detected source(s) for 850471_g1761
Aspect correction adds -0.00112 degrees (-0.268 sec of time = -2.37 arc sec) to RA
Aspect correction adds 0.00005 degrees ( 0.19 arcsec) to Dec
Total aspect correction is 2.37 arcsec
Star catalogs centered at 253.5569 , -54.0488 with radius 2.67 arc min.
n_usno: 1116 n_gsc: 0
*** WARNING -- bright star catalog has 5 entries brighter than 12 mag
The brightest has mag 10.46022
RA DEC Mag Color
bright star 0: 253.57580 (16:54:18.19) -54.06759 (-54:04:03.3) 10.46 USNO-V
bright star 1: 253.53121 (16:54:07.49) -54.06521 (-54:03:54.8) 10.87 USNO-V
bright star 2: 253.52923 (16:54:07.02) -54.02653 (-54:01:35.5) 10.56 USNO-V
bright star 3: 253.52106 (16:54:05.06) -54.08494 (-54:05:05.8) 11.50 USNO-V
bright star 4: 253.60548 (16:54:25.31) -54.08022 (-54:04:48.8) 11.82 USNO-V
Mean distance difference (CAT_DELTA) for 85 matched entries is 0.870" for 850471_g1761
Mean and std. dev of mag. difference (MAG_DELTA) are 1.514 and 1.189 for 850471_g1761
Found 8 entries without IDs and 5 entries that are acceptable afterglow candidates for 850471_g1761.
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.
3 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=253.5690 (16:54:16.56) DEC=-54.0310 (-54:01:51.6)
XRT distances are from RA=253.5651 (16:54:15.63) DEC=-54.0445 (-54:02:40.3)
-----------------
Entry 22 in the list of sources is a candidate afterglow for 850471_g1761 with genie
ra=253.55137 (16:54:12.33) dec=-54.03585 (-54:02:09.1) +/- 0.7" mag=18.83+/-0.16
dist=42.7 REFID=18 major=0.8 minor=0.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 41.2 arc sec from the BAT position.
Found 15 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
253.5555 -54.0401 17.7 -1 USNO-B1 19.11 27.58 23.82
253.5541 -54.0397 15.0 -1 USNO-B1 17.98 17.78 17.87
253.5468 -54.0395 16.3 -1 USNO-B1 99.99 15.59 99.99
253.5602 -54.0375 19.7 -1 USNO-B1 19.05 20.92 20.09
253.5452 -54.0390 17.1 -1 USNO-B1 14.42 13.73 14.04
253.5446 -54.0386 17.5 -1 USNO-B1 14.68 13.82 14.20
253.5442 -54.0385 18.0 -1 USNO-B1 13.82 13.60 13.70
253.5537 -54.0361 4.9 -1 USNO-B1 18.51 17.89 18.17
253.5427 -54.0375 19.2 -1 USNO-B1 15.61 15.78 15.70
253.5431 -54.0369 17.9 -1 USNO-B1 16.42 16.60 16.52
253.5573 -54.0335 15.1 -1 USNO-B1 17.45 16.54 16.94
253.5512 -54.0333 9.1 -1 USNO-B1 12.51 11.79 12.11 *
253.5510 -54.0331 9.8 -1 USNO-B1 12.53 99.99 99.99
253.5432 -54.0338 18.8 -1 USNO-B1 16.83 18.71 17.88
253.5457 -54.0321 18.0 -1 USNO-B1 16.79 16.35 16.55
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 33 in the list of sources is a candidate afterglow for 850471_g1761 with genie
ra=253.58832 (16:54:21.20) dec=-54.04507 (-54:02:42.3) +/- 0.6" mag=16.99+/-0.14
dist=49.1 REFID=34 major=1.3 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 65.1 arc sec from the BAT position.
This source is near the edge of image (0.851)
Found 14 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
253.5824 -54.0445 12.8 -1 USNO-B1 19.20 18.73 18.94
253.5833 -54.0475 13.6 -1 USNO-B1 19.78 19.19 19.45
253.5834 -54.0405 19.4 -1 USNO-B1 19.60 19.19 19.37
253.5855 -54.0429 9.9 -1 USNO-B1 14.98 13.98 14.42
253.5858 -54.0431 8.9 -1 USNO-B1 14.45 12.94 13.61
253.5884 -54.0445 2.2 -1 USNO-B1 99.99 14.63 99.99 *
253.5887 -54.0440 4.0 -1 USNO-B1 19.21 14.01 16.32 *
253.5914 -54.0500 18.9 -1 USNO-B1 17.56 17.33 17.43
253.5936 -54.0442 11.7 -1 USNO-B1 19.88 17.44 18.52
253.5939 -54.0438 12.6 -1 USNO-B1 18.40 17.48 17.89
253.5942 -54.0441 12.9 -1 USNO-B1 19.35 17.85 18.52
253.5955 -54.0477 17.9 -1 USNO-B1 19.65 19.60 19.62
253.5950 -54.0420 17.9 -1 USNO-B1 17.40 17.46 17.43
253.5975 -54.0462 19.9 -1 USNO-B1 18.60 18.72 18.67
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 68 in the list of sources is a candidate afterglow for 850471_g1761 with genie
ra=253.55361 (16:54:12.87) dec=-54.06552 (-54:03:55.9) +/- 0.6" mag=16.32+/-0.14
dist=79.4 REFID=68 major=1.7 minor=1.1 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 128.5 arc sec from the BAT position.
Found 20 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
253.5565 -54.0604 19.4 -1 USNO-B1 22.05 20.48 21.18
253.5572 -54.0619 15.0 -1 USNO-B1 17.71 17.78 17.75
253.5510 -54.0631 10.3 -1 USNO-B1 16.45 17.21 16.87
253.5579 -54.0640 10.7 -1 USNO-B1 17.49 17.17 17.31
253.5512 -54.0637 8.3 -1 USNO-B1 99.99 15.91 99.99
253.5516 -54.0638 7.6 -1 USNO-B1 99.99 15.42 99.99
253.5520 -54.0642 5.9 -1 USNO-B1 99.99 14.07 99.99
253.5531 -54.0649 2.5 -1 USNO-B1 14.68 13.73 14.15 *
253.5606 -54.0658 14.8 -1 USNO-B1 17.30 16.88 17.07
253.5465 -54.0658 15.0 -1 USNO-B1 20.82 19.18 19.91
253.5480 -54.0662 12.1 -1 USNO-B1 17.55 18.76 18.22
253.5490 -54.0671 11.4 -1 USNO-B1 17.27 16.77 16.99
253.5600 -54.0681 16.4 -1 USNO-B1 17.91 17.55 17.71
253.5579 -54.0686 14.2 -1 USNO-B1 19.24 18.47 18.81
253.5609 -54.0689 19.7 -1 USNO-B1 19.03 18.96 18.99
253.5527 -54.0694 14.1 -1 USNO-B1 18.36 14.95 16.46
253.5508 -54.0695 15.3 -1 USNO-B1 16.14 15.84 15.97
253.5544 -54.0708 19.2 -1 USNO-B1 16.90 16.21 16.52
253.5512 -54.0706 19.1 -1 USNO-B1 14.20 15.39 14.86
253.5522 -54.0708 19.4 -1 USNO-B1 14.45 16.14 15.39
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 82 in the list of sources is a candidate afterglow for 850471_g1761 with genie
ra=253.51987 (16:54:04.77) dec=-54.04454 (-54:02:40.3) +/- 0.6" mag=16.30+/-0.14
dist=95.6 REFID=31 major=1.0 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 114.7 arc sec from the BAT position.
This source is near the edge of image (0.926)
Found 20 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
253.5269 -54.0470 17.3 -1 USNO-B1 20.11 18.44 19.18
253.5267 -54.0464 16.0 -1 USNO-B1 17.53 17.57 17.55
253.5264 -54.0414 17.9 -1 USNO-B1 17.83 16.60 17.15
253.5232 -54.0486 16.3 -1 USNO-B1 17.87 18.40 18.16
253.5236 -54.0431 9.4 -1 USNO-B1 20.17 18.25 19.10
253.5217 -54.0457 5.7 -1 USNO-B1 19.97 18.30 19.04
253.5219 -54.0444 4.2 -1 USNO-B1 99.99 16.12 99.99 *
253.5229 -54.0421 10.9 -1 USNO-B1 19.32 19.38 19.35
253.5195 -54.0437 3.3 -1 USNO-B1 14.00 13.99 13.99 *
253.5197 -54.0426 7.1 -1 USNO-B1 18.78 18.35 18.54
253.5186 -54.0451 3.3 -1 USNO-B1 14.71 12.68 13.58 *
253.5188 -54.0422 8.7 -1 USNO-B1 17.78 18.41 18.13
253.5170 -54.0463 8.9 -1 USNO-B1 99.99 15.05 99.99
253.5148 -54.0451 11.0 -1 USNO-B1 20.51 19.31 19.84
253.5138 -54.0462 14.1 -1 USNO-B1 19.01 18.28 18.60
253.5117 -54.0451 17.4 -1 USNO-B1 20.12 19.50 19.78
253.5121 -54.0430 17.3 -1 USNO-B1 18.30 17.57 17.89
253.5118 -54.0437 17.4 -1 USNO-B1 17.53 16.95 17.21
253.5112 -54.0442 18.3 -1 USNO-B1 17.41 17.50 17.46
253.5116 -54.0424 19.0 -1 USNO-B1 17.85 20.32 19.22
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 88 in the list of sources is a candidate afterglow for 850471_g1761 with genie
ra=253.55235 (16:54:12.56) dec=-54.07149 (-54:04:17.4) +/- 0.7" mag=18.81+/-0.16
dist=100.7 REFID=79 major=1.2 minor=0.7 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 149.9 arc sec from the BAT position.
This source is near the edge of image (1.019)
Found 22 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
253.5490 -54.0671 17.2 -1 USNO-B1 17.27 16.77 16.99
253.5579 -54.0686 15.8 -1 USNO-B1 19.24 18.47 18.81
253.5527 -54.0694 7.5 -1 USNO-B1 18.36 14.95 16.46
253.5508 -54.0695 8.0 -1 USNO-B1 16.14 15.84 15.97
253.5465 -54.0696 14.1 -1 USNO-B1 15.66 17.78 16.84
253.5544 -54.0708 5.0 -1 USNO-B1 16.90 16.21 16.52 *
253.5512 -54.0706 3.9 -1 USNO-B1 14.20 15.39 14.86 *
253.5522 -54.0708 2.4 -1 USNO-B1 14.45 16.14 15.39 *
253.5462 -54.0702 13.7 -1 USNO-B1 20.72 18.08 19.25
253.5500 -54.0709 5.5 -1 USNO-B1 15.45 15.16 15.29
253.5543 -54.0714 4.1 -1 USNO-B1 18.36 15.12 16.56 *
253.5482 -54.0712 8.8 -1 USNO-B1 15.20 15.16 15.18
253.5599 -54.0719 16.1 -1 USNO-B1 15.73 18.08 17.04
253.5540 -54.0723 4.6 -1 USNO-B1 18.23 17.27 17.69 *
253.5543 -54.0726 5.6 -1 USNO-B1 16.40 16.67 16.55
253.5594 -54.0728 15.6 -1 USNO-B1 15.91 15.44 15.65
253.5575 -54.0730 12.2 -1 USNO-B1 15.45 15.75 15.62
253.5457 -54.0722 14.2 -1 USNO-B1 16.23 14.89 15.48
253.5607 -54.0732 18.7 -1 USNO-B1 17.19 17.24 17.22
253.5562 -54.0733 10.4 -1 USNO-B1 14.60 16.96 15.91
253.5471 -54.0753 17.7 -1 USNO-B1 19.11 18.32 18.67
253.5545 -54.0759 16.6 -1 USNO-B1 19.13 19.33 19.24
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
Found 4 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
253.5663 -54.0460 5.9 -1 USNO-B1 18.64 18.90 18.78
253.5643 -54.0443 2.0 -1 USNO-B1 20.65 20.33 20.47
253.5679 -54.0432 7.6 -1 USNO-B1 16.01 15.05 15.48
253.5674 -54.0422 9.8 -1 USNO-B1 16.89 17.22 17.07
The closest star is 2.01" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=253.56465 (16:54:15.52) dec=-54.04454 (-54:02:40.3) +/- 0.6" mag=16.19+/-0.14 dist=1.0 REFID=30 flag=2
Matched source ra=253.56744 (16:54:16.19) dec=-54.04353 (-54:02:36.7) +/- 0.6" mag=17.91+/-0.15 dist=6.1 REFID=29 flag=3
There are 1.2110917E+05 counts in the bkg source region of 4327.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 27.989 counts/pixel (5-sig UL in 4" is 19.54 mag) for 850471_g1761
There are 9398.7959 counts in the xrt source region of 194.00000 pixels.
Rate in xrt region with 8 arcsec radius is 48.447 counts/pixel for 850471_g1761
There are 25184.496 counts in the xrt_bkg source region of 872.00000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 28.881 counts/pixel (5-sig UL in 4" is 19.52 mag) for 850471_g1761
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 20.10, 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: 850471_554493502_180728d23h43m39s076154usUT_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(253.5544,-54.0486,45")
fk5;-circle(253.564654952352,-54.0445416326776,6")
fk5;-circle(253.56744136229,-54.0435278323731,6")
fk5;-circle(253.571372587262,-54.0442294670086,6")
fk5;-circle(253.567951935001,-54.0394435416449,6")
fk5;-circle(253.571419214394,-54.0474647190653,6")
fk5;-circle(253.568213110215,-54.0489432429342,6")
fk5;-circle(253.577000967254,-54.0469416238487,6")
fk5;-circle(253.550914638165,-54.0445804134507,6")
fk5;-circle(253.552304596503,-54.0484806854235,6")
fk5;-circle(253.547757305271,-54.0476378564558,6")
fk5;-circle(253.552986434596,-54.0526494315696,6")
fk5;-circle(253.547049064766,-54.0396568866232,6")
fk5;-circle(253.551368326409,-54.0358493006371,6")
fk5;-circle(253.573773693844,-54.0550491873081,6")
fk5;-circle(253.5445525161,-54.0385821618396,6")
fk5;-circle(253.542414213979,-54.0429564923685,6")
fk5;-circle(253.557522477406,-54.0569675709466,6")
fk5;-circle(253.551570639239,-54.0592325529032,6")
fk5;-circle(253.546186134729,-54.0572141817853,6")
fk5;-circle(253.548977686246,-54.0587181851625,6")
fk5;-circle(253.53501762652,-54.0480740673961,6")
fk5;-circle(253.531419406659,-54.0445680310592,6")
fk5;-circle(253.53671708711,-54.0548943713616,6")
fk5;-circle(253.534829701734,-54.0530218757992,6")
fk5;-circle(253.544286634559,-54.06028224071,6")
Region file: 850471_554493502_180728d23h43m39s076154usUT_xrt.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(253.56512,-54.04453,8")
Region file: 850471_554493502_180728d23h43m39s076154usUT_xrt_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(253.56512,-54.04453,25")
fk5;-circle(253.56512,-54.04453,15")
fk5;-circle(253.571372587262,-54.0442294670086,6")
fk5;-circle(253.567951935001,-54.0394435416449,6")
fk5;-circle(253.571419214394,-54.0474647190653,6")
fk5;-circle(253.568213110215,-54.0489432429342,6")
fk5;-circle(253.573036282553,-54.0389125878753,6")
fk5;-circle(253.577000967254,-54.0469416238487,6")
fk5;-circle(253.550914638165,-54.0445804134507,6")
fk5;-circle(253.552304596503,-54.0484806854235,6")
image paragraph message for exposure 1 of trigger 850471
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: high density of stars
SRCLIST PROBLEM: high density of stars, srclist filled telemetry buffer
See notes for more details.
2 source(s) near the XRT position were rejected as afterglow candidate(s). See
notes for details.
------ Start for Possible Stand-alone Circular ----
In response to GRB180728 (Swift/BAT trigger 850471) at 17:29:00 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 1740 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. Because of the density of catalogued stars,
further analysis is required to report an upper limit for any afterglow in the
sub-image. The 8'x8' region for the list of sources generated on-board covers
100% of the XRT error circle. Because of the density of catalogued stars,
further analysis is required to report an upper limit for any afterglow in the
region. No correction has been made for the expected extinction corresponding
to E(B-V) of 0.29.
------- notes for trigger 850471 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180728d23h43m41s809031usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=850471
-expid=554493502 -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/850471/
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 554493502.4672 or about 2018:209:17:58:17 UT
Found 5000 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 111% of the srclist region. Found 190 sources
in srclist catalog. WARNING -- srclist catalog buffer filled. Found 33 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 79 source(s) in Genie image catalog. 2 source(s) are within 10.0" of the
xrt position. Found 8 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.10 mag. Found 1112 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 108% of the Genie image region.
Genie image analysis:
Found 121109.2 counts in the large background region of 4327.0 pixels or a rate
of 27.989 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 19.54 mag. for a
4-arcsec aperture.
Found 9398.8 counts in the XRT position region of 194.0 pixels or a rate of
48.447 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 25.306 +/- 0.688 (1-sigma) cps or
16.27 mag and a range from 16.24 to 16.30 mag. The 3-sigma UL at the XRT
position is 27.369 cps or 16.19 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.51 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 253.5645 dec= -54.0446 mag=16.79 sep=1.31".
The closest srclist source has ra= 253.5645 dec= -54.0446 mag=16.79 sep=1.31".
Found 2 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 253.5647 dec= -54.0445 mag=16.19 sep=0.98". The closest Genie
source has ra= 253.5647 dec= -54.0445 mag=16.19 sep=0.98".
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 1740 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 16:54:15.52 = 253.56465
DEC(J2000) = -54:02:40.3 = -54.04454
with a 90%-confidence error radius of about 0.61 arc sec. This position is 0.98
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.19 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.29.
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?
554493502 1739 WHITE srclist found no candidates.
554493502 1739 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------