[vsnet-grb 357236] GCN/SWIFT_XRT_POSITION_NACK

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 22 Feb 18 13:24:07 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     811235,   Seg_Num: 0
POINT_RA:        256.586d {+17h 06m 21s} (J2000)
POINT_DEC:       -36.803d {-36d 48' 11"} (J2000)
IMG_START_DATE:  18171 TJD;    53 DOY;   18/02/22
IMG_START_TIME:  47482.75 SOD {13:11:22.75} UT,   79.2 [sec] since BAT Trigger Time
COUNTS:          16    Min_needed= 20
STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
PH2_ITER:        2    Max_iter_allowed= 4
ERROR_CODE:      1
COMMENTS:        SWIFT-XRT Nack Position.  
COMMENTS:        No source found in the image.