image overlap message for exposure 1 of trigger 886266
uvot_overlap.pl vrs. 2010-12-20b fem started at 190128d14h13m31s940557usUT
The observation of trigger 886266 started 2019-01-28T13:56:55.8
Examining file 886266_g165_uvot_sky_image.fits
The exposure ID is 570376615
The exposure time is 5.023 (seconds)
The filter is WHITE.
The uvot region is centered at (207.0641,-63.2746) with a roll angle of 110.3
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 (207.0450,-63.2650) with a radius of 3.000 arc min
This is 0.774 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 (207.0563,-63.2742) with a radius of 0.098 arc min
This is 0.212 arc min from the center of the uvot region
The area of the XRT error circle is 0.030 sq. arc min
The UVOT/XRT overlap is 0.030 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 886266
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190128d14h13m34s032397usUT
Observation start time is 2019-01-28T13:56:55.8
Examining file 886266_g165_uvot_catalog_image.fits
The exposure ID is 570376615
The exposure is 5.023 sec.
The bin size is 2 pixels
The filter is WHITE
There are 29 detected source(s) for 886266_g165
Aspect correction adds -0.00125 degrees (-0.301 sec of time = -2.03 arc sec) to RA
Aspect correction adds -0.00153 degrees (-5.52 arcsec) to Dec
Total aspect correction is 5.88 arcsec
Star catalogs centered at 207.0621 , -63.2767 with radius 2.74 arc min.
n_usno: 623 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.74366
RA DEC Mag Color
bright star 0: 207.10769 (13:48:25.84) -63.26928 (-63:16:09.4) 11.74 USNO-V
Mean distance difference (CAT_DELTA) for 29 matched entries is 0.749" for 886266_g165
Mean and std. dev of mag. difference (MAG_DELTA) are 1.118 and 1.393 for 886266_g165
Found 3 entries without IDs and 3 entries that are acceptable afterglow candidates for 886266_g165.
Acceptable entries have no ID, XRT distances < 14.75", 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=207.0450 (13:48:10.80) DEC=-63.2650 (-63:15:54.0)
XRT distances are from RA=207.0563 (13:48:13.51) DEC=-63.2742 (-63:16:27.1)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 886266_g165 with genie
ra=207.05359 (13:48:12.86) dec=-63.27459 (-63:16:28.5) +/- 0.7" mag=16.60+/-0.18
dist=4.6 REFID=14 major=0.8 minor=0.7 flag=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
207.0601 -63.2753 10.9 -1 USNO-B1 19.00 20.94 20.08
207.0586 -63.2775 13.2 -1 USNO-B1 17.46 16.49 16.92
207.0521 -63.2788 15.3 -1 USNO-B1 18.96 17.16 17.96
207.0526 -63.2704 15.1 -1 USNO-B1 18.38 18.28 18.32
207.0434 -63.2759 17.2 -1 USNO-B1 16.58 15.38 15.92
207.0426 -63.2762 18.7 -1 USNO-B1 99.99 16.62 99.99
207.0458 -63.2713 17.3 -1 USNO-B1 20.21 18.51 19.26
207.0445 -63.2719 17.6 -1 USNO-B1 99.99 18.24 99.99
uvot_check_outside found 12 of 12 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" or brighter than 12 mag
-----------------
Entry 4 in the list of sources is a candidate afterglow for 886266_g165 with genie
ra=207.03923 (13:48:09.42) dec=-63.28032 (-63:16:49.2) +/- 0.7" mag=16.33+/-0.17
dist=35.3 REFID=19 major=0.9 minor=0.7 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 55.9 arc sec from the BAT position.
Found 8 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
207.0515 -63.2808 19.9 -1 USNO-B1 16.36 14.79 15.49
207.0434 -63.2759 17.2 -1 USNO-B1 16.58 15.38 15.92
207.0426 -63.2762 15.8 -1 USNO-B1 99.99 16.62 99.99
207.0387 -63.2809 2.4 -1 USNO-B1 15.27 13.70 14.40 *
207.0349 -63.2771 13.5 -1 USNO-B1 19.23 17.21 18.11
207.0340 -63.2797 8.8 -1 USNO-B1 99.99 18.59 99.99
207.0330 -63.2770 15.7 -1 USNO-B1 99.99 17.27 99.99
207.0339 -63.2852 19.7 -1 USNO-B1 16.48 14.90 15.60
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 5 in the list of sources is a candidate afterglow for 886266_g165 with genie
ra=207.03767 (13:48:09.04) dec=-63.28153 (-63:16:53.5) +/- 0.7" mag=16.64+/-0.18
dist=40.1 REFID=20 major=0.9 minor=0.7 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 60.7 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
207.0387 -63.2809 2.8 -1 USNO-B1 15.27 13.70 14.40 *
207.0349 -63.2771 16.5 -1 USNO-B1 19.23 17.21 18.11
207.0340 -63.2797 8.8 -1 USNO-B1 99.99 18.59 99.99
207.0330 -63.2770 18.1 -1 USNO-B1 99.99 17.27 99.99
207.0339 -63.2852 14.7 -1 USNO-B1 16.48 14.90 15.60
207.0312 -63.2862 19.8 -1 USNO-B1 99.99 17.59 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
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
207.0601 -63.2753 7.4 -1 USNO-B1 19.00 20.94 20.08
The closest star is 7.37" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=207.05359 (13:48:12.86) dec=-63.27459 (-63:16:28.5) +/- 0.7" mag=16.60+/-0.18 dist=4.6 REFID=14 flag=0
There are 3820.3237 counts in the bkg source region of 5511.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 0.693 counts/pixel (5-sig UL in 4" is 17.86 mag) for 886266_g165
There are 116.75783 counts in the src source region of 49.000000 pixels.
Rate in src region with 4 arcsec radius is 2.383 counts/pixel for 886266_g165
There are 818.82178 counts in the cand_src_bkg source region of 1171.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 0.699 counts/pixel (5-sig UL in 4" is 17.86 mag) for 886266_g165
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 18.42, XRT distances < 14.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 886266_570376615_190128d14h13m34s032397usUT_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(207.0641,-63.2746,45")
fk5;-circle(207.053589213694,-63.274589253604,6")
fk5;-circle(207.051693318955,-63.2808837912301,6")
fk5;-circle(207.068518712958,-63.2805938667189,6")
fk5;-circle(207.075972347013,-63.2777614399127,6")
fk5;-circle(207.039230720124,-63.2803198758445,6")
fk5;-circle(207.037665574588,-63.2815296114651,6")
fk5;-circle(207.081756039271,-63.2756390741335,6")
fk5;-circle(207.074151099796,-63.2856513357372,6")
fk5;-circle(207.087579582983,-63.272299685669,6")
Region file: 886266_570376615_190128d14h13m34s032397usUT_cand_src.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(207.053589213694,-63.274589253604,4")
Region file: 886266_570376615_190128d14h13m34s032397usUT_cand_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(207.053589213694,-63.274589253604,25")
fk5;-circle(207.053589213694,-63.274589253604,15")
fk5;-circle(207.051693318955,-63.2808837912301,6")
Region file: /Home/eud/uvot_tdrss/swift/uvot_gcn/src_886266_XRT.reg
# Region file format: DS9 version 3.0
# find_uvot_ag.pl vrs. 2017-02-17 fem XRT
global font="helvetica 12 bold" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source=1
fk5;circle(207.0563,-63.2742,5.9") # color=red dash=0
point(207.05505,-63.27573) # point=diamond 10 color=red width=2
image paragraph message for exposure 1 of trigger 886266
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB190128 (Swift/BAT trigger 886266) at 13:54:09 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 5 seconds with the White filter
starting 143 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 13:48:12.86 = 207.05359
DEC(J2000) = -63:16:28.5 = -63.27459
with a 90%-confidence error radius of about 0.69 arc sec. This position is 4.6
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.60 with a 1-sigma error of about 0.18. No correction has been made for the
large, but uncertain, extinction expected.
------- notes for trigger 886266 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190128d14h13m45s115004usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=886266
-expid=570376615 -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/886266/
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 Genie image. BAT position found.
UVOT exposure began at MET 570376615.84756 or about 2019:028:13:56:50 UT
No information found about the number of stars in the star catalog for srclist
region.
Found 29 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 3 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
18.42 mag. Found 619 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 57% of the Genie image region.
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?
570376615 143 WHITE srclist data are not available.
570376615 143 WHITE 207.05359 -63.27459 16.60/18.4 4.6 image Yes
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -63.27459
GRB_ERROR: 0.69
GRB_RA: 207.05359
IMAGE_START_TIME: 13:56:50
MAGNITUDE: 16.60
MAG_ERROR: 0.18
MESSAGE_TYPE: ACK
SOURCE: XRT