srclist overlap message for exposure 3 of trigger 845443
uvot_overlap.pl vrs. 2010-12-20b fem started at 180630d15h43m55s357910usUT
The observation of trigger 845443 started 2018-06-30T11:26:50.1
Examining file ./845443_g898_uvot_sky_srclist.fits
The exposure ID is 552050810
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (49.0295,-87.4754) with a roll angle of 50.0
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 (48.8100,-87.4820) with a radius of 3.000 arc min
This is 0.702 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 (48.9808,-87.4788) with a radius of 0.028 arc min
This is 0.241 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 0.003 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 3 of trigger 845443
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180630d15h44m11s208680usUT
Observation start time is 2018-06-30T11:26:50.1
Examining file ./845443_g898_uvot_catalog_srclist.fits
The exposure ID is 552050810
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 153 detected source(s) for 845443_g898
Aspect correction adds 0.02192 degrees (5.261 sec of time = 3.46 arc sec) to RA
Aspect correction adds -0.00035 degrees (-1.24 arcsec) to Dec
Total aspect correction is 3.67 arcsec
Star catalogs centered at 49.0449 , -87.4766 with radius 9.19 arc min.
n_usno: 1383 n_gsc: 1516
*** WARNING -- bright star catalog has 6 entries brighter than 12 mag
The brightest has mag 9.41104
RA DEC Mag Color
bright star 0: 49.60960 (03:18:26.30) -87.58763 (-87:35:15.5) 9.41 USNO-V
bright star 1: 51.72652 (03:26:54.37) -87.50587 (-87:30:21.1) 11.04 GSC-F
bright star 2: 47.93700 (03:11:44.88) -87.35049 (-87:21:01.7) 11.31 USNO-V
bright star 3: 46.07162 (03:04:17.19) -87.55316 (-87:33:11.4) 11.33 USNO-R
bright star 4: 50.46865 (03:21:52.48) -87.36826 (-87:22:05.7) 11.58 GSC-F
bright star 5: 47.74951 (03:10:59.88) -87.59393 (-87:35:38.1) 11.04 GSC-F
Mean distance difference (CAT_DELTA) for 143 matched entries is 0.786" for 845443_g898
Mean and std. dev of mag. difference (MAG_DELTA) are 1.634 and 0.613 for 845443_g898
Found 12 entries without IDs and 4 entries that are acceptable afterglow candidates for 845443_g898.
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.
1 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=48.8100 (03:15:14.40) DEC=-87.4820 (-87:28:55.2)
XRT distances are from RA=48.9808 (03:15:55.39) DEC=-87.4788 (-87:28:43.7)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 845443_g898 with 3x3 stamp
ra=48.98482 (03:15:56.36) dec=-87.47825 (-87:28:41.7) +/- 1.1" mag=19.32+/-0.35
dist=2.1 REFID=97
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
Found 6 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
48.9617 -87.4799 7.0 -1 USNO-B1 22.77 20.30 21.40
49.0825 -87.4815 19.3 -1 USNO-B1 16.34 15.36 15.80
49.0375 -87.4779 8.5 -1 GSC2.3 99.99 99.99 99.99
48.9629 -87.4799 6.9 -1 GSC2.3 20.01 99.99 99.99
49.0854 -87.4814 19.6 -1 GSC2.3 14.90 16.38 99.99
48.9600 -87.4830 17.7 -1 GSC2.3 20.66 99.99 99.99
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 10 in the list of sources is a candidate afterglow for 845443_g898 with 1x1 stamp
ra=49.14652 (03:16:35.16) dec=-87.45011 (-87:27:00.4) +/- 1.1" mag=19.51+/-0.35
dist=106.7 REFID=139
*** The position of this source is inconsistent with the XRT position.
The position is 126.7 arc sec from the BAT position.
src: 10 srclist_match has ID
src: 10 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 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
49.1478 -87.4496 2.0 -1 USNO-B1 18.50 18.01 18.23 *
49.1461 -87.4496 1.8 -1 GSC2.3 17.56 18.74 99.99 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 15 in the list of sources is a candidate afterglow for 845443_g898 with 1x1 stamp
ra=49.80261 (03:19:12.63) dec=-87.49037 (-87:29:25.3) +/- 1.1" mag=19.60+/-0.35
dist=136.1 REFID=135
*** The position of this source is inconsistent with the XRT position.
The position is 159.6 arc sec from the BAT position.
src: 15 distr. of nearby unmatched sources: 0 0 0 0 0
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
49.7078 -87.4893 15.4 -1 USNO-B1 21.37 20.03 20.62
49.7773 -87.4858 16.8 -1 USNO-B1 22.25 20.32 21.18
49.7168 -87.4933 17.1 -1 USNO-B1 20.69 20.26 20.45
49.7560 -87.4908 7.5 -1 USNO-B1 13.43 12.90 13.14 *
49.7362 -87.4930 14.1 -1 USNO-B1 21.07 19.88 20.41
49.7792 -87.4857 17.1 -1 GSC2.3 99.99 22.19 99.99
49.7580 -87.4908 7.2 -1 GSC2.3 12.40 13.53 99.99 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 22 in the list of sources is a candidate afterglow for 845443_g898 with 1x1 stamp
ra=48.54526 (03:14:10.86) dec=-87.52259 (-87:31:21.3) +/- 1.1" mag=19.51+/-0.35
dist=171.6 REFID=153
*** The position of this source is inconsistent with the XRT position.
The position is 151.9 arc sec from the BAT position.
src: 22 distr. of nearby unmatched sources: 0 0 0 0 0
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
48.6437 -87.5200 18.0 -1 USNO-B1 21.40 20.33 20.81
48.5826 -87.5190 14.3 -1 USNO-B1 13.79 13.11 13.41
48.5796 -87.5212 7.3 -1 USNO-B1 21.68 19.87 20.67
48.5848 -87.5190 14.3 -1 GSC2.3 12.73 13.97 99.99 *
48.5689 -87.5239 6.0 -1 GSC2.3 99.99 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
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
48.9617 -87.4799 5.0 -1 USNO-B1 22.77 20.30 21.40
49.0375 -87.4779 9.6 -1 GSC2.3 99.99 99.99 99.99
48.9629 -87.4799 4.9 -1 GSC2.3 20.01 99.99 99.99
The closest star is 4.86" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=48.98482 (03:15:56.36) dec=-87.47825 (-87:28:41.7) +/- 1.1" mag=19.32+/-0.35 dist=2.1 REFID=97
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 < 5",
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 3 of trigger 845443
Catalogued source 4.9" from XRT position may affect AG photometry.
------ Start for Possible Stand-alone Circular ----
In response to GRB180630 (Swift/BAT trigger 845443) at 11:11:51 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 877 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 03:15:56.20 = 48.98418
DEC(J2000) = -87:28:42.2 = -87.47839
with a 90%-confidence error radius of about 0.63 arc sec. This position is 1.6
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.71 with a 1-sigma error of about 0.15. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.13.
------- notes for trigger 845443 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180630d15h44m18s300326usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=845443
-expid=552050810 -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/845443/
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 552050810.12906 or about 2018:181:11:26:45 UT
Found 1501 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 12% of the srclist region. Found 153 sources in
srclist catalog. Found 12 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 8 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 1 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.86 mag. Found 78 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 11% of the Genie image region.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 48.9848 dec= -87.4783 mag=19.32 sep=2.11".
The closest srclist source has ra= 48.9848 dec= -87.4783 mag=19.32 sep=2.11".
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?
552050810 877 WHITE 48.98482 -87.47825 19.32/19.2 2.1 srclist Yes
552050810 877 WHITE 48.98418 -87.47839 18.71/20.9 1.6 image Yes
List afterglow candidates for other finding charts.
552050020 87 WHITE 48.97942 -87.47830 18.05/19.2 1.8 srclist Yes
552050020 87 WHITE 48.98342 -87.47844 17.44/20.9 1.4 image Yes
552050232 299 U 48.97895 -87.47836 18.24/18.1 1.7 srclist Yes
552050232 299 U 48.98170 -87.47847 17.69/20.6 1.2 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -87.47839
GRB_ERROR: 0.63
GRB_RA: 48.98418
IMAGE_START_TIME: 11:26:45
MAGNITUDE: 18.71
MAG_ERROR: 0.15
MESSAGE_TYPE: ACK
SOURCE: XRT