srclist overlap message for exposure 1 of trigger 845443
uvot_overlap.pl vrs. 2010-12-20b fem started at 180630d15h43m54s728742usUT
The observation of trigger 845443 started 2018-06-30T11:13:40.6
Examining file ./845443_g108_uvot_sky_srclist.fits
The exposure ID is 552050020
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (48.8984,-87.4750) with a roll angle of 50.0
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (48.8100,-87.4820) with a radius of 3.000 arc min
This is 0.478 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 0.314 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 1 of trigger 845443
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180630d15h43m57s303997usUT
Observation start time is 2018-06-30T11:13:40.6
Examining file ./845443_g108_uvot_catalog_srclist.fits
The exposure ID is 552050020
The exposure is 149.956 sec.
The bin size is 2 pixels
The filter is WHITE
There are 63 detected source(s) for 845443_g108
Aspect correction adds 0.01890 degrees (4.536 sec of time = 2.98 arc sec) to RA
Aspect correction adds -0.00029 degrees (-1.03 arcsec) to Dec
Total aspect correction is 3.16 arcsec
Star catalogs centered at 48.9566 , -87.4792 with radius 6.36 arc min.
n_usno: 638 n_gsc: 717
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 58 matched entries is 0.581" for 845443_g108
Mean and std. dev of mag. difference (MAG_DELTA) are 1.387 and 0.685 for 845443_g108
Found 7 entries without IDs and 6 entries that are acceptable afterglow candidates for 845443_g108.
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.
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_g108 with 5x5 stamp
ra=48.97942 (03:15:55.06) dec=-87.47830 (-87:28:41.9) +/- 1.1" mag=18.05+/-0.35
dist=1.8 REFID=22
src: 0 distr. of nearby unmatched sources: 0 0 0 0 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
48.9617 -87.4799 6.4 -1 USNO-B1 22.77 20.30 21.40
49.0825 -87.4815 19.9 -1 USNO-B1 16.34 15.36 15.80
48.9629 -87.4799 6.3 -1 GSC2.3 20.01 99.99 99.99
49.0375 -87.4779 9.3 -1 GSC2.3 99.99 99.99 99.99
48.9600 -87.4830 17.3 -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 3 in the list of sources is a candidate afterglow for 845443_g108 with 3x3 stamp
ra=48.80959 (03:15:14.30) dec=-87.46318 (-87:27:47.4) +/- 1.1" mag=20.51+/-0.35
dist=62.5 REFID=62
*** The position of this source is inconsistent with the XRT position.
The position is 67.8 arc sec from the BAT position.
src: 3 srclist_match has ID
src: 3 distr. of nearby unmatched sources: 0 0 0 0 0
Found 3 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
48.8053 -87.4625 2.5 -1 USNO-B1 18.10 17.68 17.86 *
48.8063 -87.4627 2.0 -1 GSC2.3 17.42 18.34 99.99 *
48.8433 -87.4590 15.8 -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
-----------------
Entry 4 in the list of sources is a candidate afterglow for 845443_g108 with 3x3 stamp
ra=48.83063 (03:15:19.35) dec=-87.49523 (-87:29:42.8) +/- 1.1" mag=20.62+/-0.35
dist=63.7 REFID=63
*** The position of this source is inconsistent with the XRT position.
The position is 47.8 arc sec from the BAT position.
src: 4 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
48.9034 -87.4940 12.2 -1 GSC2.3 99.99 99.99 99.99
48.9456 -87.4949 18.1 -1 GSC2.3 99.99 99.99 99.99
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 8 in the list of sources is a candidate afterglow for 845443_g108 with 3x3 stamp
ra=49.15088 (03:16:36.21) dec=-87.49878 (-87:29:55.6) +/- 1.1" mag=20.22+/-0.35
dist=76.7 REFID=61
*** The position of this source is inconsistent with the XRT position.
The position is 80.8 arc sec from the BAT position.
src: 8 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 -87.4980 2.9 -1 USNO-B1 17.92 17.08 17.45 *
49.1471 -87.4980 2.7 -1 GSC2.3 16.69 17.91 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 25 in the list of sources is a candidate afterglow for 845443_g108 with 3x3 stamp
ra=49.07076 (03:16:16.98) dec=-87.52949 (-87:31:46.2) +/- 1.1" mag=20.03+/-0.35
dist=183.0 REFID=57
*** The position of this source is inconsistent with the XRT position.
The position is 175.8 arc sec from the BAT position.
src: 25 srclist_match has ID
src: 25 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
49.0130 -87.5289 9.2 -1 USNO-B1 20.63 20.33 20.46
49.0032 -87.5278 12.1 -1 GSC2.3 20.25 99.99 99.99
49.0635 -87.5278 6.2 -1 GSC2.3 99.99 99.99 99.99
49.0189 -87.5288 8.4 -1 GSC2.3 99.99 99.99 99.99
49.0715 -87.5294 0.5 -1 GSC2.3 18.00 19.94 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 26 in the list of sources is a candidate afterglow for 845443_g108 with 3x3 stamp
ra=47.90116 (03:11:36.28) dec=-87.45799 (-87:27:28.8) +/- 1.1" mag=19.70+/-0.35
dist=188.0 REFID=54
*** The position of this source is inconsistent with the XRT position.
The position is 168.3 arc sec from the BAT position.
src: 26 srclist_match has ID
src: 26 distr. of nearby unmatched sources: 1 1 0 0 0
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
47.9271 -87.4571 5.3 -1 USNO-B1 18.79 17.53 18.09
47.9149 -87.4578 2.3 -1 USNO-B1 99.99 17.55 99.99 *
47.8330 -87.4577 10.9 -1 USNO-B1 18.63 17.20 17.83
47.8061 -87.4606 17.8 -1 USNO-B1 21.72 19.80 20.65
47.8014 -87.4608 18.9 -1 USNO-B1 99.99 20.37 99.99
47.9566 -87.4628 19.3 -1 GSC2.3 99.99 99.99 99.99
47.9288 -87.4570 5.6 -1 GSC2.3 17.79 19.69 99.99
47.9116 -87.4582 1.8 -1 GSC2.3 17.92 19.07 99.99 *
47.8330 -87.4577 10.9 -1 GSC2.3 16.96 18.84 99.99
47.8048 -87.4605 17.9 -1 GSC2.3 19.48 21.86 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
48.9629 -87.4799 4.9 -1 GSC2.3 20.01 99.99 99.99
49.0375 -87.4779 9.6 -1 GSC2.3 99.99 99.99 99.99
The closest star is 4.86" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=48.97942 (03:15:55.06) dec=-87.47830 (-87:28:41.9) +/- 1.1" mag=18.05+/-0.35 dist=1.8 REFID=22
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: 1 good candidate(s) found.
srclist paragraph message for exposure 1 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 87 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 03:15:56.02 = 48.98342
DEC(J2000) = -87:28:42.4 = -87.47844
with a 90%-confidence error radius of about 0.62 arc sec. This position is 1.4
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.44 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.13.
------- notes for trigger 845443 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180630d15h44m02s809438usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=845443
-expid=552050020 -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 552050020.55818 or about 2018:181:11:13:35 UT
Found 710 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 12% of the srclist region. Found 63 sources in
srclist catalog. Found 7 srclist source(s) without IDs. There are 1 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 10 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 108 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 11% 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?
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
List afterglow candidates for other finding charts.
552050232 299 U 48.97895 -87.47836 18.24/18.1 2.8 srclist Yes
552050232 299 U 48.98170 -87.47847 17.69/20.6 3.3 image Yes
552050810 877 WHITE 48.98482 -87.47825 19.32/19.2 3.8 srclist Yes
552050810 877 WHITE 48.98418 -87.47839 18.71/20.9 3.6 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -87.47844
GRB_ERROR: 0.62
GRB_RA: 48.98342
IMAGE_START_TIME: 11:13:35
MAGNITUDE: 17.44
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT