srclist overlap message for exposure 1 of trigger 1285812
uvot_overlap.pl vrs. 2010-12-20b fem started at 250129d13h02m29s626745usUT
The observation of trigger 1285812 started 2025-01-29T05:05:28.3
Examining file ./1285812_g1218_uvot_sky_srclist.fits
The exposure ID is 759819928
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (198.6825,5.0307) with a roll angle of 107.3
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 (198.6890,5.0390) with a radius of 3.000 arc min
This is 0.634 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 (198.6766,5.0307) with a radius of 0.040 arc min
This is 0.350 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1285812
find_uvot_ag.pl vrs. 2023-04-25a fem started at 250129d13h02m30s916955usUT
Observation start time is 2025-01-29T05:05:28.3
Examining file ./1285812_g1218_uvot_catalog_srclist.fits
The exposure ID is 759819928
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 21 detected source(s) for 1285812_g1218
Aspect correction adds 0.00072 degrees (0.173 sec of time = 2.58 arc sec) to RA
Aspect correction adds -0.00062 degrees (-2.22 arcsec) to Dec
Total aspect correction is 3.40 arcsec
Star catalogs centered at 198.6738 , 5.0293 with radius 5.16 arc min.
n_usno: 166 n_gsc: 168
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 16 matched entries is 0.571" for 1285812_g1218
Mean and std. dev of mag. difference (MAG_DELTA) are 0.812 and 0.406 for 1285812_g1218
Found 5 entries without IDs and 1 entries that are acceptable afterglow candidates for 1285812_g1218.
Acceptable entries have no ID, XRT distances < 6", 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=198.6890 (13:14:45.36) DEC= 5.0390 (+05:02:20.4)
XRT distances are from RA=198.6766 (13:14:42.39) DEC= 5.0307 (+05:01:50.6)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1285812_g1218 with 5x5 stamp
ra=198.67673 (13:14:42.42) dec=5.03063 (+05:01:50.3) +/- 1.1" mag=17.88+/-0.35
dist=0.5 REFID=6
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
Found 3 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
198.6742 5.0336 14.1 -1 USNO-B1 20.82 19.13 19.88
198.6771 5.0319 4.7 -1 GSC2.3 99.99 22.23 99.99
198.6741 5.0335 13.9 -1 GSC2.3 18.71 20.61 99.99
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 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
198.6771 5.0319 4.5 -1 GSC2.3 99.99 22.23 99.99
The closest star is 4.47" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=198.67673 (13:14:42.42) dec=5.03063 (+05:01:50.3) +/- 1.1" mag=17.88+/-0.35 dist=0.5 REFID=6
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 < 6",
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 1285812
Catalogued source 4.5" from XRT position may affect AG photometry.
------ Start for Possible Stand-alone Circular ----
In response to GRB250129 (Swift/BAT trigger 1285812) at 04:45:09 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 1184 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 13:14:42.41 = 198.67669
DEC(J2000) = +05:01:50.6 = 5.03071
with a 90%-confidence error radius of about 0.62 arc sec. This position is 0.2
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.36 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.037.
------- notes for trigger 1285812 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 250129d13h02m33s335808usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1285812
-expid=759819928 -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/1285812/
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 759819928.3379 or about 2025:030:05:05:23 UT
Found 167 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 21 sources in
srclist catalog. Found 5 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 6 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
20.54 mag. Found 44 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 5% 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?
759819928 1184 WHITE 198.67673 5.03063 17.88/19.2 0.5 srclist Yes
759819928 1184 WHITE 198.67669 5.03071 17.36/20.5 0.2 image Yes
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 5.03071
GRB_ERROR: 0.62
GRB_RA: 198.67669
IMAGE_START_TIME: 05:05:23
MAGNITUDE: 17.36
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT