image overlap message for exposure 1 of trigger 1208389
uvot_overlap.pl vrs. 2010-12-20b fem started at 240113d10h28m27s868435usUT
The observation of trigger 1208389 started 2024-01-12T17:39:57.8
Examining file ./1208389_g152_uvot_sky_image.fits
The exposure ID is 726773997
The exposure time is 115.015 (seconds)
The filter is WHITE.
The uvot region is centered at (270.6490,24.4801) with a roll angle of 152.1
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 (270.6440,24.4870) with a radius of 3.000 arc min
This is 0.497 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 (270.6440,24.4889) with a radius of 0.033 arc min
This is 0.597 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
image afterglow message for exposure 1 of trigger 1208389
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240113d10h28m30s843008usUT
Observation start time is 2024-01-12T17:39:57.8
Examining file ./1208389_g152_uvot_catalog_image.fits
The exposure ID is 726773997
The exposure is 115.015 sec.
The bin size is 2 pixels
The filter is WHITE
There are 11 detected source(s) for 1208389_g152
Aspect correction adds 0.00172 degrees (0.413 sec of time = 5.64 arc sec) to RA
Aspect correction adds -0.00114 degrees (-4.11 arcsec) to Dec
Total aspect correction is 6.98 arcsec
Star catalogs centered at 270.6487 , 24.4833 with radius 2.55 arc min.
n_usno: 140 n_gsc: 153
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.28226
RA DEC Mag Color
bright star 0: 270.65502 (18:02:37.20) 24.49492 (+24:29:41.7) 11.28 USNO-V
Mean distance difference (CAT_DELTA) for 7 matched entries is 0.445" for 1208389_g152
Mean and std. dev of mag. difference (MAG_DELTA) are 1.411 and 0.540 for 1208389_g152
Found 4 entries without IDs and 3 entries that are acceptable afterglow candidates for 1208389_g152.
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=270.6440 (18:02:34.56) DEC=24.4870 (+24:29:13.2)
XRT distances are from RA=270.6440 (18:02:34.56) DEC=24.4889 (+24:29:20.2)
*** WARNING 36 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1208389_g152 with genie
ra=270.64414 (18:02:34.59) dec=24.48923 (+24:29:21.2) +/- 0.7" mag=16.73+/-0.14
dist=1.1 REFID=6 major=1.2 minor=1.2 flag=0
Found 4 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
270.6399 24.4857 18.9 -1 USNO-B1 17.61 16.53 17.01
270.6402 24.4918 15.9 -1 USNO-B1 17.85 16.64 17.18
270.6399 24.4857 18.9 -1 GSC2.3 16.58 17.62 99.99
270.6402 24.4917 15.6 -1 GSC2.3 16.77 17.87 99.99
uvot_check_outside found 10 of 10 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" or brighter than 12 mag
-----------------
Entry 6 in the list of sources is a candidate afterglow for 1208389_g152 with genie
ra=270.62498 (18:02:30.00) dec=24.48602 (+24:29:09.7) +/- 0.7" mag=17.12+/-0.14
dist=63.2 REFID=7 major=0.9 minor=0.5 flag=16 (aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 62.4 arc sec from the BAT position.
This source is near the edge of image (0.999)
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
270.6304 24.4841 19.2 -1 USNO-B1 21.00 19.73 20.29
270.6244 24.4861 1.9 -1 USNO-B1 15.29 14.07 14.61 *
270.6241 24.4809 18.5 -1 USNO-B1 18.00 16.82 17.34
270.6303 24.4846 18.2 -1 GSC2.3 19.84 21.42 99.99
270.6245 24.4860 1.6 -1 GSC2.3 13.92 15.28 99.99 *
270.6241 24.4809 18.7 -1 GSC2.3 16.92 17.94 99.99
270.6193 24.4855 18.6 -1 GSC2.3 99.99 22.28 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
-----------------
Entry 10 in the list of sources is a candidate afterglow for 1208389_g152 with genie
ra=270.65424 (18:02:37.02) dec=24.45938 (+24:27:33.8) +/- 0.9" mag=19.62+/-0.22
dist=111.6 REFID=1 major=1.1 minor=0.5 flag=16 (aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 105.0 arc sec from the BAT position.
This source is near the edge of image (0.924)
Found 4 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
270.6542 24.4586 2.6 -1 USNO-B1 18.22 16.93 17.50 *
270.6589 24.4571 17.2 -1 USNO-B1 19.75 18.60 19.11
270.6542 24.4586 2.8 -1 GSC2.3 17.00 18.08 99.99 *
270.6589 24.4571 17.5 -1 GSC2.3 18.37 19.82 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=270.64414 (18:02:34.59) dec=24.48923 (+24:29:21.2) +/- 0.7" mag=16.73+/-0.14 dist=1.1 REFID=6 flag=0
There are 1.3505288E+05 counts in the bkg source region of 5932.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 22.767 counts/pixel (5-sig UL in 4" is 19.37 mag) for 1208389_g152
There are 2729.0793 counts in the src source region of 48.000000 pixels.
Rate in src region with 4 arcsec radius is 56.856 counts/pixel for 1208389_g152
There are 23443.662 counts in the cand_src_bkg source region of 1021.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 22.961 counts/pixel (5-sig UL in 4" is 19.36 mag) for 1208389_g152
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 19.92, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 1208389_726773997_240113d10h28m30s843008usUT_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(270.6490,24.4801,45")
fk5;-circle(270.644136229717,24.4892332431427,6")
fk5;-circle(270.640017451782,24.4856485803051,6")
fk5;-circle(270.650632401397,24.4927849808302,6")
fk5;-circle(270.651686098666,24.4818148107662,6")
Region file: 1208389_726773997_240113d10h28m30s843008usUT_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(270.644136229717,24.4892332431427,4")
Region file: 1208389_726773997_240113d10h28m30s843008usUT_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(270.644136229717,24.4892332431427,25")
fk5;-circle(270.644136229717,24.4892332431427,15")
fk5;-circle(270.640017451782,24.4856485803051,6")
fk5;-circle(270.640259899412,24.4918380430573,6")
fk5;-circle(270.650632401397,24.4927849808302,6")
image paragraph message for exposure 1 of trigger 1208389
------ Start for Possible Stand-alone Circular ----
In response to GRB240112 (Swift/BAT trigger 1208389) at 17:37:24 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 115 seconds with the White filter
starting 120 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 18:02:34.59 = 270.64414
DEC(J2000) = +24:29:21.2 = 24.48923
with a 90%-confidence error radius of about 0.75 arc sec. This position is 1.1
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.73 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.107.
------- notes for trigger 1208389 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240113d10h28m34s122770usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1208389
-expid=726773997 -meonly -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/1208389/
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 726773997.77406 or about 2024:012:17:39:52 UT
Found 865 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 16% of the srclist region. Found 59 sources in
srclist catalog. Found 9 srclist source(s) without IDs. There are 1 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.08 mag.
Found 11 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 4 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
19.92 mag. Found 151 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 16% 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?
726773997 119 WHITE 270.64401 24.48913 18.02/19.1 0.7 srclist Yes
726773997 119 WHITE 270.64414 24.48923 16.73/19.9 1.1 image Yes
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 24.48923
GRB_ERROR: 0.75
GRB_RA: 270.64414
IMAGE_START_TIME: 17:39:52
MAGNITUDE: 16.73
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT