srclist overlap message for exposure 2 of trigger 931384
uvot_overlap.pl vrs. 2010-12-20b fem started at 191025d03h15m53s194304usUT
The observation of trigger 931384 started 2019-10-25T02:52:08.2
Examining file 931384_g321_uvot_sky_srclist.fits
The exposure ID is 593664728
The exposure time is undefined.
The filter is U.
The uvot region is centered at (320.7507,-48.3325) with a roll angle of 246.0
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 (320.7550,-48.3300) with a radius of 3.000 arc min
This is 0.230 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
Could not find the location of an XRT error circle
srclist afterglow message for exposure 2 of trigger 931384
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191025d03h15m53s912018usUT
Observation start time is 2019-10-25T02:52:08.2
Examining file 931384_g321_uvot_catalog_srclist.fits
The exposure ID is 593664728
The exposure is 250.000 sec.
The bin size is 2 pixels
The filter is U
There are 41 detected source(s) for 931384_g321
Aspect correction adds -0.00118 degrees (-0.283 sec of time = -2.83 arc sec) to RA
Aspect correction adds -0.00067 degrees (-2.40 arcsec) to Dec
Total aspect correction is 3.71 arcsec
Star catalogs centered at 320.7508 , -48.3277 with radius 8.50 arc min.
n_usno: 673 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 7.01032
RA DEC Mag Color
bright star 0: 320.73536 (21:22:56.49) -48.31404 (-48:18:50.5) 11.74 USNO-V
bright star 1: 320.85331 (21:23:24.79) -48.32711 (-48:19:37.6) 11.12 USNO-V
bright star 2: 320.68869 (21:22:45.29) -48.45741 (-48:27:26.7) 7.01 USNO-V
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 35 matched entries is 0.682" for 931384_g321
Mean and std. dev of mag. difference (MAG_DELTA) are 1.630 and 0.697 for 931384_g321
Found 6 entries without IDs and 3 entries that are acceptable afterglow candidates for 931384_g321.
Acceptable entries have no ID, BAT distance < 200" or XRT distance < 10", 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=320.7550 (21:23:01.20) DEC=-48.3300 (-48:19:48.0)
XRT distances are as reported in catalog file.
-----------------
Entry 2 in the list of sources is a candidate afterglow for 931384_g321 with 5x5 stamp
ra=320.76020 (21:23:02.45) dec=-48.29301 (-48:17:34.8) +/- 1.1" mag=18.94+/-0.35
dist=133.7 REFID=31
src: 2 distr. of nearby unmatched sources: 0 1 0 0 0
Found 1 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
320.7593 -48.2918 4.8 -1 USNO-B1 13.60 13.13 13.34
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 5 in the list of sources is a candidate afterglow for 931384_g321 with 5x5 stamp
ra=320.75881 (21:23:02.11) dec=-48.29055 (-48:17:26.0) +/- 1.1" mag=19.18+/-0.35
dist=142.3 REFID=36
src: 5 distr. of nearby unmatched sources: 0 1 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
320.7593 -48.2918 4.7 -1 USNO-B1 13.60 13.13 13.34
320.7544 -48.2864 18.4 -1 USNO-B1 20.62 19.35 19.91
##### 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 931384_g321 with 5x5 stamp
ra=320.82006 (21:23:16.81) dec=-48.34701 (-48:20:49.2) +/- 1.1" mag=19.62+/-0.35
dist=167.3 REFID=41
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
320.8227 -48.3515 17.2 -1 USNO-B1 17.23 16.72 16.95
320.8263 -48.3476 15.2 -1 USNO-B1 20.93 19.49 20.13
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
separation of 2 and 5 is 9.5 arc sec
separation of 2 and 10 is 241.5 arc sec
separation of 5 and 10 is 250.7 arc sec
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 17.56, BAT distances < 200",
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 2 of trigger 931384
------ Start for Possible Stand-alone Circular ----
In response to GRB191025 (Swift/BAT trigger 931384) at 02:46:46 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
297 seconds after the BAT trigger. No credible afterglow candidate has been
found in the initial data products. Data from the 2.7'x2.7' sub-image are not
available at this time. The 8'x8' region for the list of sources generated
on-board covers 100% of the BAT error circle. The list of sources is typically
complete to about 18.0 mag. No correction has been made for the expected
extinction corresponding to E(B-V) of 0.03.
------- notes for trigger 931384 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 191025d03h15m55s345961usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=931384
-expid=593664728 -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/931384/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
No XRT position found for srclist. BAT position found.
UVOT exposure began at MET 593664728.20598 or about 2019:298:02:52:03 UT
Found 669 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 41 sources in
srclist catalog. Found 6 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
17.56 mag.
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?
593664728 297 U 320.76020 -48.29301 18.94/17.6 133.7 srclist Yes
593664728 297 U 320.75881 -48.29055 19.18/17.6 142.3 srclist Yes
593664728 297 U 320.82006 -48.34701 19.62/17.6 167.3 srclist Yes
593664728 297 ? image data are not available.
List afterglow candidates for other finding charts.
593664516 85 WHITE 320.76080 -48.29282 17.91/18.7 134.6 srclist Yes
593664516 85 WHITE 320.78780 -48.34593 18.52/18.7 97.2 srclist Yes
593664516 85 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: u
GRB_DEC: -48.33000
GRB_ERROR: 200
GRB_RA: 320.75500
IMAGE_START_TIME: 02:52:03
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: BAT