[vsnet-grb 316598] GCN/SWIFT_XRT_IMAGE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 22 Feb 17 02:39:20 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     739517,   Seg_Num: 0
GRB_RA:          230.4841d {+15h 21m 56.1s} (J2000),
                 230.8126d {+15h 23m 15.0s} (current),
                 229.5303d {+15h 18m 07.2s} (1950)
GRB_DEC:         -55.8387d {-55d 50' 19.3"} (J2000),
                 -55.8992d {-55d 53' 57.1"} (current),
                 -55.6598d {-55d 39' 35.1"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       66 [cnts]
IMG_START_DATE:  17806 TJD;    53 DOY;   17/02/22
IMG_START_TIME:  8959.77 SOD {02:29:19.77} UT,   288.7 [sec] since BAT Trigger Time
CENTROID_X:      419.64,  raw= 420  [pixels]
CENTROID_Y:      99.13,  raw= 99  [pixels]
ROLL:            107.94 [deg]
GAIN:            4
MODE:            2, Short Image mode
WAVEFORM:        134
EXPO_TIME:       0.10 [sec]
GRB_POS_XRT_Y:   -469.72
GRB_POS_XRT_Z:   266.95
IMAGE_URL:       sw00739517000msxps_rw.img
SUN_POSTN:       335.57d {+22h 22m 18s}  -10.16d {-10d 09' 44"}
SUN_DIST:         89.69 [deg]   Sun_angle= 7.0 [hr] (West of Sun)
MOON_POSTN:      280.39d {+18h 41m 32s}  -18.81d {-18d 48' 17"}
MOON_DIST:        52.33 [deg]
MOON_ILLUM:      21 [%]
GAL_COORDS:      322.98,  1.06 [deg] galactic lon,lat of the burst
ECL_COORDS:      243.81,-35.94 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact); see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .  
COMMENTS:        WARNING: The centroided position is more than 100 rows or columns from the center of the FOV.