image overlap message for exposure 1 of trigger 1055000


uvot_overlap.pl vrs. 2010-12-20b fem started at 210612d13h31m47s611253usUT

The observation of trigger 1055000 started 2021-06-12T13:24:27.8
Examining file 1055000_g1374_uvot_sky_image.fits
The exposure ID is 645197067
The exposure time is 149.857 (seconds)
The filter is WHITE.

The uvot region is centered at (236.7809,-47.6725) with a roll angle of 226.9
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 (236.7720,-47.6820) with a radius of 3.000 arc min
This is 0.674 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 (236.7907,-47.6693) with a radius of 0.080 arc min
This is 0.440 arc min from the center of the uvot region
The area of the XRT error circle is 0.020 sq. arc min
The UVOT/XRT overlap is 0.020 sq. arc min or 1.00 of the XRT error circle



image afterglow message for exposure 1 of trigger 1055000


find_uvot_ag.pl vrs. 2020-10-30 fem started at 210612d13h31m49s428898usUT

Observation start time is 2021-06-12T13:24:27.8
Examining file 1055000_g1374_uvot_catalog_image.fits
The exposure ID is 645197067
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 52 detected source(s) for 1055000_g1374
Aspect correction adds -0.00363 degrees (-0.871 sec of time = -8.79 arc sec) to RA
Aspect correction adds -0.00012 degrees (-0.44 arcsec) to Dec
Total aspect correction is 8.81 arcsec
Star catalogs centered at 236.7836 , -47.6717 with radius 2.78 arc min.
n_usno: 832 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 10.725
                        RA                      DEC              Mag  Color
bright star  0: 236.79118 (15:47:09.88) -47.64294 (-47:38:34.6) 10.73 USNO-R
bright star  1: 236.76809 (15:47:04.34) -47.64222 (-47:38:32.0) 11.75 USNO-R
bright star  2: 236.75046 (15:47:00.11) -47.64616 (-47:38:46.2) 11.84 USNO-R
Mean distance difference (CAT_DELTA) for 51 matched entries is 0.834" for 1055000_g1374
Mean and std. dev of mag. difference (MAG_DELTA) are 1.684 and 0.829 for 1055000_g1374
Found 8 entries without IDs and 8 entries that are acceptable afterglow candidates for 1055000_g1374.
Acceptable entries have no ID, XRT distances < 12", 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=236.7720 (15:47:05.28) DEC=-47.6820 (-47:40:55.2)
XRT distances are from RA=236.7907 (15:47:09.77) DEC=-47.6693 (-47:40:09.5)

-----------------
Entry 0 in the list of sources is a candidate afterglow for 1055000_g1374 with genie
 ra=236.79099 (15:47:09.84) dec=-47.66678 (-47:40:00.4) +/- 0.6" mag=18.61+/-0.15
 dist=9.1 REFID=20 major=4.0 minor=0.5 flag=0
Found 5 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 
  236.7870 -47.6707  17.0    -1 USNO-B1  12.71  11.88  12.25 *
  236.7951 -47.6691  13.1    -1 USNO-B1  17.43  19.00  18.30
  236.7935 -47.6655   7.6    -1 USNO-B1  18.98  16.34  17.51
  236.7929 -47.6648   8.4    -1 USNO-B1  17.57  15.97  16.68
  236.7938 -47.6639  12.3    -1 USNO-B1  18.12  24.45  21.64
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 3 in the list of sources is a candidate afterglow for 1055000_g1374 with genie
 ra=236.78650 (15:47:08.76) dec=-47.66644 (-47:39:59.2) +/- 0.6" mag=18.16+/-0.15
 dist=14.5 REFID=18 major=1.8 minor=1.2 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 
  236.7821 -47.6702  17.2    -1 USNO-B1  18.14  15.48  16.66
  236.7808 -47.6704  19.8    -1 USNO-B1  18.05  16.56  17.22
  236.7870 -47.6707  15.3    -1 USNO-B1  12.71  11.88  12.25 *
  236.7935 -47.6655  17.3    -1 USNO-B1  18.98  16.34  17.51
  236.7929 -47.6648  16.5    -1 USNO-B1  17.57  15.97  16.68
  236.7938 -47.6639  19.9    -1 USNO-B1  18.12  24.45  21.64
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 9 in the list of sources is a candidate afterglow for 1055000_g1374 with genie
 ra=236.78010 (15:47:07.22) dec=-47.67009 (-47:40:12.3) +/- 0.6" mag=18.78+/-0.15
 dist=25.9 REFID=22 major=2.1 minor=1.5 flag=0
*** The position of this source is inconsistent with the XRT position.
    The position is 47.2 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 
  236.7852 -47.6725  15.2    -1 USNO-B1  99.99  14.80  99.99
  236.7833 -47.6732  13.5    -1 USNO-B1  99.99  18.65  99.99
  236.7847 -47.6732  15.8    -1 USNO-B1  15.82  14.45  15.06
  236.7821 -47.6702   4.9    -1 USNO-B1  18.14  15.48  16.66
  236.7860 -47.6733  18.3    -1 USNO-B1  99.99  16.90  99.99
  236.7808 -47.6704   2.1    -1 USNO-B1  18.05  16.56  17.22 *
  236.7870 -47.6707  16.9    -1 USNO-B1  12.71  11.88  12.25 *
  236.7768 -47.6654  18.7    -1 USNO-B1  19.57  19.05  19.28
  236.7766 -47.6652  19.3    -1 USNO-B1  21.09  17.57  19.13
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 10 in the list of sources is a candidate afterglow for 1055000_g1374 with genie
 ra=236.79545 (15:47:10.91) dec=-47.67618 (-47:40:34.2) +/- 0.7" mag=19.16+/-0.16
 dist=27.3 REFID=30 major=0.9 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
    The position is 60.6 arc sec from the BAT position.
Found 5 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 
  236.7944 -47.6760   2.5    -1 USNO-B1  20.67  15.40  17.74 *
  236.7954 -47.6751   3.8    -1 USNO-B1  19.07  18.34  18.66
  236.7964 -47.6782   7.6    -1 USNO-B1  18.07  20.89  19.64
  236.7997 -47.6760  10.3    -1 USNO-B1  15.80  14.29  14.96
  236.7989 -47.6782  11.2    -1 USNO-B1  21.06  18.09  19.41
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 16 in the list of sources is a candidate afterglow for 1055000_g1374 with genie
 ra=236.81229 (15:47:14.95) dec=-47.67032 (-47:40:13.2) +/- 0.6" mag=16.66+/-0.14
 dist=52.5 REFID=23 major=0.9 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
    The position is 106.3 arc sec from the BAT position.
This source is near the edge of image (0.974)
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 
  236.8065 -47.6737  18.4    -1 USNO-B1  17.89  15.69  16.67
  236.8084 -47.6681  12.4    -1 USNO-B1  99.99  17.86  99.99
  236.8121 -47.6690   4.6    -1 USNO-B1  18.76  16.37  17.43 *
  236.8129 -47.6699   2.1    -1 USNO-B1  15.14  13.48  14.22 *
  236.8139 -47.6708   4.3    -1 USNO-B1  14.70  17.76  16.40 *
  236.8145 -47.6741  14.7    -1 USNO-B1  19.81  17.52  18.54
  236.8196 -47.6685  18.9    -1 USNO-B1  18.59  16.40  17.37
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 42 in the list of sources is a candidate afterglow for 1055000_g1374 with genie
 ra=236.76340 (15:47:03.22) dec=-47.67923 (-47:40:45.2) +/- 0.7" mag=19.21+/-0.16
 dist=75.2 REFID=35 major=1.0 minor=0.9 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
    The position is 23.1 arc sec from the BAT position.
Found 11 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 
  236.7632 -47.6768   8.7    -1 USNO-B1  18.21  17.32  17.72
  236.7637 -47.6796   1.6    -1 USNO-B1  18.19  16.55  17.28 *
  236.7658 -47.6817  10.6    -1 USNO-B1  19.42  19.07  19.23
  236.7644 -47.6808   6.0    -1 USNO-B1  19.13  15.74  17.25
  236.7645 -47.6811   7.2    -1 USNO-B1  18.26  16.27  17.15
  236.7639 -47.6805   4.7    -1 USNO-B1  17.97  16.35  17.07
  236.7646 -47.6830  13.8    -1 USNO-B1  21.55  18.15  19.66
  236.7571 -47.6766  17.8    -1 USNO-B1  21.99  20.21  21.00
  236.7593 -47.6808  11.6    -1 USNO-B1  22.07  20.73  21.32
  236.7561 -47.6773  18.9    -1 USNO-B1  21.82  23.50  22.75
  236.7590 -47.6819  14.3    -1 USNO-B1  99.99  18.04  99.99
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 44 in the list of sources is a candidate afterglow for 1055000_g1374 with genie
 ra=236.76352 (15:47:03.24) dec=-47.68070 (-47:40:50.5) +/- 0.7" mag=19.22+/-0.16
 dist=77.6 REFID=36 major=1.0 minor=0.8 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
    The position is 21.1 arc sec from the BAT position.
Found 12 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 
  236.7632 -47.6768  14.0    -1 USNO-B1  18.21  17.32  17.72
  236.7637 -47.6796   3.8    -1 USNO-B1  18.19  16.55  17.28
  236.7658 -47.6817   6.6    -1 USNO-B1  19.42  19.07  19.23
  236.7644 -47.6808   2.1    -1 USNO-B1  19.13  15.74  17.25 *
  236.7645 -47.6811   2.8    -1 USNO-B1  18.26  16.27  17.15 *
  236.7639 -47.6805   1.2    -1 USNO-B1  17.97  16.35  17.07 *
  236.7646 -47.6830   8.6    -1 USNO-B1  21.55  18.15  19.66
  236.7658 -47.6853  17.6    -1 USNO-B1  18.48  16.75  17.52
  236.7593 -47.6808  10.4    -1 USNO-B1  22.07  20.73  21.32
  236.7590 -47.6819  11.7    -1 USNO-B1  99.99  18.04  99.99
  236.7626 -47.6861  19.7    -1 USNO-B1  21.45  19.35  20.28
  236.7601 -47.6852  18.2    -1 USNO-B1  18.18  19.18  18.74
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 48 in the list of sources is a candidate afterglow for 1055000_g1374 with genie
 ra=236.78375 (15:47:08.10) dec=-47.69318 (-47:41:35.5) +/- 0.7" mag=19.44+/-0.17
 dist=87.6 REFID=52 major=1.4 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
    The position is 49.3 arc sec from the BAT position.
This source is near the edge of image (0.896)
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 
  236.7806 -47.6883  19.1    -1 USNO-B1  99.99  16.29  99.99
  236.7820 -47.6889  16.0    -1 USNO-B1  18.84  17.32  17.99
  236.7786 -47.6899  17.1    -1 USNO-B1  20.08  19.23  19.61
  236.7899 -47.6909  17.0    -1 USNO-B1  17.90  16.13  16.92
  236.7781 -47.6924  14.0    -1 USNO-B1  18.33  16.76  17.45
  236.7864 -47.6930   6.5    -1 USNO-B1  99.99  18.27  99.99
  236.7831 -47.6934   1.7    -1 USNO-B1  19.26  15.69  17.28 *
  236.7834 -47.6936   1.8    -1 USNO-B1  17.37  15.31  16.22 *
  236.7815 -47.6938   5.9    -1 USNO-B1  19.07  17.56  18.23
  236.7919 -47.6938  19.9    -1 USNO-B1  21.02  19.18  20.00
  236.7798 -47.6954  12.5    -1 USNO-B1  17.95  16.64  17.22
  236.7853 -47.6964  12.0    -1 USNO-B1  17.15  18.25  17.76
  236.7842 -47.6968  13.2    -1 USNO-B1  19.81  17.88  18.74
  236.7840 -47.6973  14.8    -1 USNO-B1  99.99  17.32  99.99
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 0 entries in star catalog(s) within 10" of the XRT position.

List UVOT sources within 10" of the XRT position:
Unmatched source ra=236.79099 (15:47:09.84) dec=-47.66678 (-47:40:00.4) +/- 0.6" mag=18.61+/-0.15 dist=9.1 REFID=20 flag=0
There are 74402.680 counts in the bkg source region of 4869.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 15.281 counts/pixel (5-sig UL in 4" is 19.87 mag) for 1055000_g1374
There are 3187.7949 counts in the xrt source region of 197.00000 pixels.
Rate in xrt region with 8 arcsec radius is 16.182 counts/pixel for 1055000_g1374
There are 13758.451 counts in the xrt_bkg source region of 807.00000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 17.049 counts/pixel (5-sig UL in 4" is 19.81 mag) for 1055000_g1374

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 20.42, XRT distances < 12",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.

SUMMARY: 0 good candidate(s) found.



Region file: 1055000_645197067_210612d13h31m49s428898usUT_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(236.7809,-47.6725,45")
fk5;-circle(236.790991318471,-47.6667830344057,6")
fk5;-circle(236.786632758391,-47.6707247238783,6")
fk5;-circle(236.786503335801,-47.6664429350959,6")
fk5;-circle(236.792688580387,-47.6647908834288,6")
fk5;-circle(236.797511230656,-47.6701614596786,6")
fk5;-circle(236.783786528898,-47.6735094870583,6")
fk5;-circle(236.800803888911,-47.6718185583095,6")
fk5;-circle(236.78009870261,-47.6700882158706,6")
fk5;-circle(236.795451242854,-47.6761751074177,6")
fk5;-circle(236.786084275887,-47.6770884535924,6")
fk5;-circle(236.799669548053,-47.6758890133031,6")
fk5;-circle(236.77799520953,-47.6771974416784,6")
fk5;-circle(236.773208257641,-47.6772218219205,6")
fk5;-circle(236.782765218525,-47.6849470202244,6")
fk5;-circle(236.765580513686,-47.6706466574228,6")
fk5;-circle(236.762940018576,-47.6769892318669,6")
fk5;-circle(236.763400243878,-47.6792304817359,6")



Region file: 1055000_645197067_210612d13h31m49s428898usUT_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(236.7907,-47.6693,8")



Region file: 1055000_645197067_210612d13h31m49s428898usUT_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(236.7907,-47.6693,25")
fk5;-circle(236.7907,-47.6693,15")
fk5;-circle(236.790991318471,-47.6667830344057,6")
fk5;-circle(236.786632758391,-47.6707247238783,6")
fk5;-circle(236.786503335801,-47.6664429350959,6")
fk5;-circle(236.792688580387,-47.6647908834288,6")
fk5;-circle(236.797511230656,-47.6701614596786,6")
fk5;-circle(236.783786528898,-47.6735094870583,6")
fk5;-circle(236.800803888911,-47.6718185583095,6")
fk5;-circle(236.799326569866,-47.6641684279885,6")
fk5;-circle(236.78009870261,-47.6700882158706,6")
fk5;-circle(236.795451242854,-47.6761751074177,6")
fk5;-circle(236.786084275887,-47.6770884535924,6")



image paragraph message for exposure 1 of trigger 1055000


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.
1 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 GRB210612 (Swift/BAT trigger 1055000) at 13:01:32 UT,

---- UVOT paragraph for Joint or Stand-alone Circular ----

UVOT took a finding chart exposure of 150 seconds with the White filter
starting 1347 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 extinction.

------- notes for trigger 1055000 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210612d13h31m52s590848usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1055000
-expid=645197067 -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/1055000/
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 645197067.75518 or about 2021:163:13:24:22 UT

Found 4382 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 79% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 34 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 52 source(s) in Genie image catalog. 1 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
20.42 mag. Found 828 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 74% of the Genie image region.

Genie image analysis:
Found 74402.7 counts in the large background region of 4869.0 pixels or a rate
of 15.281 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 19.69 mag. for a
4-arcsec aperture.
Found 3187.8 counts in the XRT position region of 197.0 pixels or a rate of
16.182 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -1.139 +/- 0.422 (1-sigma) cps. The
3-sigma UL at the XRT position is 1.266 cps or 19.35 mag. The number of srclist
sources filled the available telemetry. The weakest source detected was 18.80
mag. The closest srclist source has ra= 236.7867 dec= -47.6708 mag=13.86
sep=11.27".
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 236.7910 dec= -47.6668 mag=18.61 sep=9.09". The closest Genie
source has ra= 236.7910 dec= -47.6668 mag=18.61 sep=9.09".

This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the srclist data with mag < 18.66 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=236.70813
(15:46:49.95), DEC=-47.70844 (-47:42:30.4) (J2000). It has a mag of 18.09. It
is 181.7" from the BAT position.

****THIS SOURCE IS OUTSIDE XRT ERROR CIRCLE--USE WITH CAUTION***
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 1347 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 15:46:49.95 = 236.70813
DEC(J2000) = -47:42:30.4 = -47.70844
with a 90%-confidence error radius of about 1.10 arc sec. The estimated
magnitude is 18.09 with a 1-sigma error of about 0.35. No correction has been
made for extinction.

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 1347 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 15:47:09.84 = 236.79099
DEC(J2000) = -47:40:00.4 = -47.66678
with a 90%-confidence error radius of about 0.63 arc sec. This position is 9.09
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.61 with a 1-sigma error of about 0.15. No correction has been made for
extinction.

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?
645197067 1347 WHITE srclist found no candidates.
645197067 1347 WHITE image found no candidates.
List afterglow candidates for other finding charts.

------- Tokens for Quick GCN -------