image overlap message for exposure 1 of trigger 020296
uvot_overlap.pl vrs. 2010-12-20b fem started at 130904d18h49m16s668540usUT
The observation of trigger 020296 started 2013-09-04T18:39:18.4
Examining file 020296_g7181_uvot_sky_image.fits
The exposure ID is 400012758
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (256.8745,-32.0102) with a roll angle of 274.3
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 (256.8763,-32.0114) with a radius of 3.600 arc min
This is 0.116 arc min from the center of the uvot region
The area of the BAT error circle is 40.72 sq. arc min
The UVOT/BAT overlap is 7.17 sq. arc min or 0.18 of the BAT error circle
Could not find the location of an XRT error circle
image afterglow message for exposure 1 of trigger 020296
find_uvot_ag.pl vrs. 2012-08-24 fem started at 130904d18h49m17s180947usUT
Observation start time is 2013-09-04T18:39:18.4
Examining file 020296_g7181_uvot_catalog_image.fits
The exposure ID is 400012758
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 17 detected source(s) for 020296_g7181
Aspect correction adds 0.00096 degrees ( 0.230 sec of time = 2.92 arc sec) to RA
Aspect correction adds 0.00168 degrees ( 6.04 arcsec) to Dec
Total aspect correction is 6.710 arcsec
Star catalogs centered at 256.8707 , -32.0087 with radius 2.52 arc min.
n_usno: 1189 n_gsc: 4
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 9.81752
RA DEC Mag Color
bright star 0: 256.89238 (17:07:34.17) -32.01613 (-32:00:58.1) 9.82 USNO-V
bright star 1: 256.90565 (17:07:37.36) -31.99564 (-31:59:44.3) 11.30 USNO-V
bright star 2: 256.90367 (17:07:36.88) -31.98182 (-31:58:54.5) 11.50 USNO-R
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 16 matched entries is 0.983" for 020296_g7181
Mean and std. dev of mag. difference (MAG_DELTA) are 0.492 and 1.095 for 020296_g7181
Found 3 entries without IDs and 1 entries that are acceptable afterglow candidates for 020296_g7181.
Acceptable entries have no ID, BAT distance < 200" or XRT distance < 10", and are > ~(80 - 10*(mag-6))" from any bright star.
Magnitude criteria will be applied later.
BAT distances are from RA=256.8763 (17:07:30.31) DEC=-32.0114 (-32:00:41.0)
XRT distances are as reported in catalog file.
-----------------
Entry 18 in the list of sources is a candidate afterglow for 020296_g7181 with genie
ra=256.84297 (17:07:22.31) dec=-32.01271 (-32:00:45.7) +/- 0.8" mag=18.13+/-0.15
dist=101.9 REFID=10 major=1.0 minor=0.9 flag=0
This source is near the edge of image (0.959)
Found 15 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
256.8487 -32.0113 18.1 -1 USNO-B1 18.17 22.31 20.47
256.8472 -32.0087 19.3 -1 USNO-B1 25.57 99.99 99.99
256.8477 -32.0142 15.6 -1 USNO-B1 17.48 75.57 99.99
256.8472 -32.0125 12.8 -1 USNO-B1 18.21 19.59 18.98
256.8465 -32.0102 14.1 -1 USNO-B1 17.87 17.76 17.81
256.8455 -32.0170 17.3 -1 USNO-B1 17.47 22.75 20.41
256.8432 -32.0134 2.7 -1 USNO-B1 17.47 16.09 16.70 *
256.8431 -32.0130 1.2 10 USNO-B1 19.54 15.51 17.30 *
256.8423 -32.0100 9.8 -1 USNO-B1 18.27 20.00 19.23
256.8434 -32.0157 10.9 -1 USNO-B1 50.00 27.60 99.99
256.8436 -32.0162 12.8 -1 USNO-B1 18.82 15.79 17.14
256.8411 -32.0132 6.1 -1 USNO-B1 18.58 23.61 21.38
256.8398 -32.0093 15.7 -1 USNO-B1 17.53 17.18 17.33
256.8391 -32.0102 15.0 -1 USNO-B1 17.47 17.04 17.23
256.8381 -32.0134 15.1 -1 USNO-B1 18.73 24.43 21.90
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 13 mag
There are 2.4346850E+05 counts in the bkg source region of 5735.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 42.453 counts/pixel (5-sig UL in 4" is 19.31 mag) for 020296_g7181
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.31, BAT distances < 200",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 020296_400012758_130904d18h49m17s180947usUT_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(256.8745,-32.0102,45")
fk5;-circle(256.87673453934,-32.0098151195924,6")
fk5;-circle(256.875930848299,-32.0148460651304,6")
fk5;-circle(256.874613299236,-32.0067937522319,6")
fk5;-circle(256.883579655583,-32.0095578379411,6")
fk5;-circle(256.867128870228,-32.0148441257267,6")
fk5;-circle(256.858116427653,-32.0098530596897,6")
image paragraph message for exposure 1 of trigger 020296
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: high density of stars, partial overlap
SRCLIST PROBLEM: high density of stars, srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB130904 (Swift/BAT trigger 020296) at 16:39:36 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 7170 seconds after the INTEGRAL trigger. No credible afterglow
candidate has been found in the initial data products. The 2.7'x2.7' sub-image
covers 18% of the INTEGRAL error circle. Because of the density of catalogued
stars, further analysis is required to report an upper limit for any afterglow
in the sub-image. The 8'x8' region for the list of sources generated on-board
covers 6% of the INTEGRAL error circle. Because of the density of catalogued
stars, further analysis is required to report an upper limit for any afterglow
in the region. No correction has been made for the expected extinction
corresponding to E(B-V) of 0.72.
------- notes for trigger 020296 ------
uvot_gcn_auto.pl vrs. 2013-02-06 fem at 130904d18h49m24s003115usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=020296
-expid=400012758 -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/020296/
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. No XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 400012758.42686 or about 2013:247:18:39:15 UT
Found 5000 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 125% of the srclist region. Found 190 sources
in srclist catalog. WARNING -- srclist catalog buffer filled. Found 93 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.66 mag.
Found 17 source(s) in Genie image catalog. Found 3 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 19.31 mag. Found 1185 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
129% of the Genie image region.
Genie image analysis:
Found 243468.5 counts in the large background region of 5735.0 pixels or a rate
of 42.453 counts/pixel in a radius of 45.0 arcsec. Based on this background,
the typical 5-sigma UL at a random point in the Genie image is 19.32 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 19.40 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?
400012758 7170 WHITE srclist found no candidates.
400012758 7170 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------