Gamma-ray Burst 130608A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN/BACODINE POSITION NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:15:38 UT
  NOTICE_TYPE:     Swift-BAT GRB Position
  TRIGGER_NUM:     557771,   Seg_Num: 0
  GRB_RA:           24.580d {+01h 38m 19s} (J2000),
                    24.780d {+01h 39m 07s} (current),
                    23.839d {+01h 35m 21s} (1950)
  GRB_DEC:         +41.494d {+41d 29' 38"} (J2000),
                   +41.562d {+41d 33' 42"} (current),
                   +41.240d {+41d 14' 24"} (1950)
  GRB_ERROR:       3.00 [arcmin radius, statistical only]
  GRB_INTEN:       0 [cnts]    Image_Peak=1397 [image_cnts]
  TRIGGER_DUR:     64.000 [sec] 
  TRIGGER_INDEX:   20000     E_range: 15-50 keV
  BKG_INTEN:       0 [cnts]
  BKG_TIME:        0.00 SOD {00:00:00.00} UT
  BKG_DUR:         0 [sec]
  GRB_DATE:        16451 TJD;   159 DOY;   13/06/08
  GRB_TIME:        83661.34 SOD {23:14:21.34} UT
  GRB_PHI:         -147.99 [deg]
  GRB_THETA:        41.18 [deg]
  SOLN_STATUS:     0x13
  RATE_SIGNIF:     0.00 [sigma]
  IMAGE_SIGNIF:    9.45 [sigma]
  MERIT_PARAMS:     +1  +0  +0  +6  +1  +0  +0  +0 -67  +0 
  SUN_POSTN:        77.29d {+05h 09m 10s}  +22.92d {+22d 55' 22"}
  SUN_DIST:         47.33 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.00d {+05h 24m 00s}  +20.18d {+20d 10' 39"}
  MOON_DIST:        51.73 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.28,-20.53 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:       38.89, 28.94 [deg] ecliptic lon,lat of the burst (or transient)
  COMMENTS:        SWIFT-BAT GRB Coordinates.  
  COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
  COMMENTS:        A point_source was found.  
  COMMENTS:        This does not match any source in the on-board catalog.  
  COMMENTS:        This does not match any source in the ground catalog.  
  COMMENTS:        This is a GRB.  
  COMMENTS:        This trigger occurred at longitude,latitude = 147.18,18.99 [deg].  
  

• red DSS finding chart ps-file
  
  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:17:36 UT
  NOTICE_TYPE:     Swift-XRT Position
  TRIGGER_NUM:     557771,   Seg_Num: 0
  GRB_RA:           24.6107d {+01h 38m 26.56s} (J2000),
                    24.8106d {+01h 39m 14.53s} (current),
                    23.8695d {+01h 35m 28.68s} (1950)
  GRB_DEC:         +41.5014d {+41d 30' 05.0"} (J2000),
                   +41.5694d {+41d 34' 09.6"} (current),
                   +41.2475d {+41d 14' 51.1"} (1950)
  GRB_ERROR:       6.5 [arcsec radius, statistical plus systematic, 90% containment]
  GRB_INTEN:       4.77e-10 [erg/cm2/sec]
  GRB_SIGNIF:      5.19 [sigma]
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  83822.90 SOD {23:17:02.90} UT,   161.6 [sec] since BAT Trigger Time
  TAM[0-3]:        327.66 237.22 261.58 243.53
  AMPLIFIER:       2
  WAVEFORM:        134
  SUN_POSTN:        77.29d {+05h 09m 10s}  +22.92d {+22d 55' 22"}
  SUN_DIST:         47.31 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.02d {+05h 24m 04s}  +20.18d {+20d 10' 38"}
  MOON_DIST:        51.72 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.30,-20.51 [deg] galactic lon,lat of the burst
  ECL_COORDS:       38.92, 28.94 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Coordinates.  
  COMMENTS:        The XRT position is 1.46 arcmin from the BAT position.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:17:54 UT
  NOTICE_TYPE:     Swift-XRT Processed Image
  TRIGGER_NUM:     557771,   Seg_Num: 0
  GRB_RA:           24.6107d {+01h 38m 26.5s} (J2000),
                    24.8106d {+01h 39m 14.5s} (current),
                    23.8695d {+01h 35m 28.6s} (1950)
  GRB_DEC:         +41.5014d {+41d 30' 05.0"} (J2000),
                   +41.5694d {+41d 34' 09.6"} (current),
                   +41.2475d {+41d 14' 51.1"} (1950)
  GRB_ERROR:       6.1 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       27 [cnts]
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  83822.90 SOD {23:17:02.90} UT,   161.6 [sec] since BAT Trigger Time
  CENTROID_X:      205.08,  raw= 205  [pixels]
  CENTROID_Y:      325.04,  raw= 325  [pixels]
  ROLL:            96.05 [deg]
  GAIN:            1
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   63.75
  GRB_POS_XRT_Z:   -232.46
  IMAGE_URL:       sw00557771000msxps_rw.img
  SUN_POSTN:        77.29d {+05h 09m 10s}  +22.92d {+22d 55' 22"}
  SUN_DIST:         47.31 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.02d {+05h 24m 05s}  +20.18d {+20d 10' 38"}
  MOON_DIST:        51.73 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.30,-20.51 [deg] galactic lon,lat of the burst
  ECL_COORDS:       38.92, 28.94 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Processed Image.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:17:50 UT
  NOTICE_TYPE:     Swift-XRT Image
  TRIGGER_NUM:     557771,   Seg_Num: 0
  GRB_RA:           24.6107d {+01h 38m 26.5s} (J2000),
                    24.8106d {+01h 39m 14.5s} (current),
                    23.8695d {+01h 35m 28.6s} (1950)
  GRB_DEC:         +41.5014d {+41d 30' 05.0"} (J2000),
                   +41.5694d {+41d 34' 09.6"} (current),
                   +41.2475d {+41d 14' 51.1"} (1950)
  GRB_ERROR:       6.1 [arcsec, radius, statistical plus systematic]
  GRB_INTEN:       27 [cnts]
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  83822.90 SOD {23:17:02.90} UT,   161.6 [sec] since BAT Trigger Time
  CENTROID_X:      205.08,  raw= 205  [pixels]
  CENTROID_Y:      325.04,  raw= 325  [pixels]
  ROLL:            96.05 [deg]
  GAIN:            1
  MODE:            3, Long Image mode
  WAVEFORM:        134
  EXPO_TIME:       2.50 [sec]
  GRB_POS_XRT_Y:   63.75
  GRB_POS_XRT_Z:   -232.46
  IMAGE_URL:       sw00557771000msxps_rw.img
  SUN_POSTN:        77.29d {+05h 09m 10s}  +22.92d {+22d 55' 22"}
  SUN_DIST:         47.31 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.02d {+05h 24m 05s}  +20.18d {+20d 10' 38"}
  MOON_DIST:        51.73 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.30,-20.51 [deg] galactic lon,lat of the burst
  ECL_COORDS:       38.92, 28.94 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Image.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:18:18 UT
  NOTICE_TYPE:     Swift-BAT GRB Lightcurve
  TRIGGER_NUM:     557771,   Seg_Num: 0
  GRB_RA:           24.580d {+01h 38m 19s} (J2000),
                    24.780d {+01h 39m 07s} (current),
                    23.839d {+01h 35m 21s} (1950)
  GRB_DEC:         +41.494d {+41d 29' 38"} (J2000),
                   +41.562d {+41d 33' 42"} (current),
                   +41.240d {+41d 14' 24"} (1950)
  GRB_DATE:        16451 TJD;   159 DOY;   13/06/08
  GRB_TIME:        83661.34 SOD {23:14:21.34} UT
  TRIGGER_INDEX:   20000
  GRB_PHI:         -147.99 [deg]
  GRB_THETA:        41.18 [deg]
  DELTA_TIME:      0.00 [sec]
  TRIGGER_DUR:     64.000 [sec] 
  SOLN_STATUS:     0x13
  RATE_SIGNIF:     0.00 [sigma]
  IMAGE_SIGNIF:    9.45 [sigma]
  LC_URL:          sw00557771000msb.lc
  SUN_POSTN:        77.29d {+05h 09m 10s}  +22.92d {+22d 55' 22"}
  SUN_DIST:         47.33 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.02d {+05h 24m 06s}  +20.18d {+20d 10' 38"}
  MOON_DIST:        51.75 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.28,-20.53 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:       38.89, 28.94 [deg] ecliptic lon,lat of the burst (or transient)
  COMMENTS:        SWIFT-BAT GRB Lightcurve.  
  COMMENTS:           
  COMMENTS:        The next comments were copied from the BAT_POS Notice:  
  COMMENTS:        This is an image trigger.  
  COMMENTS:        A point_source was found.  
  COMMENTS:        This does not match any source in the on-board catalog.  
  COMMENTS:        This does not match any source in the ground catalog.  
  COMMENTS:        This is a GRB.  
  COMMENTS:        This trigger occurred at longitude,latitude = 147.18,18.99 [deg].  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:20:43 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     557771,   Seg_Num: 0
  POINT_RA:         24.523d {+01h 38m 06s} (J2000)
  POINT_DEC:       +41.490d {+41d 29' 25"} (J2000)
  POINT_ROLL:      96.053d
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  83829.98 SOD {23:17:09.98} UT,   168.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        4.635
  N_STARS:         62
  X_OFFSET:        712 [pixels]
  Y_OFFSET:        344 [pixels]
  X_MAX:           1671 [pixels]
  Y_MAX:           1303 [pixels]
  DET_THRESH:      18
  PHOTO_THRESH:    10
  SL_URL:          sw00557771000msufc0168.fits
  SUN_POSTN:        77.29d {+05h 09m 11s}  +22.92d {+22d 55' 23"}
  SUN_DIST:         47.37 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.05d {+05h 24m 11s}  +20.18d {+20d 10' 37"}
  MOON_DIST:        51.81 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.24,-20.54 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       38.84, 28.96 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:21:04 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     557771,   Seg_Num: 0
  POINT_RA:         24.523d {+01h 38m 06s} (J2000)
  POINT_DEC:       +41.490d {+41d 29' 25"} (J2000)
  POINT_ROLL:      96.053d
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  83829.98 SOD {23:17:09.98} UT,   168.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        4.635
  N_STARS:         62
  X_OFFSET:        712 [pixels]
  Y_OFFSET:        344 [pixels]
  X_MAX:           1671 [pixels]
  Y_MAX:           1303 [pixels]
  DET_THRESH:      18
  PHOTO_THRESH:    10
  SL_URL:          sw00557771000msufc0168.fits
  SUN_POSTN:        77.29d {+05h 09m 11s}  +22.92d {+22d 55' 23"}
  SUN_DIST:         47.37 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.05d {+05h 24m 12s}  +20.18d {+20d 10' 37"}
  MOON_DIST:        51.81 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.24,-20.54 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       38.84, 28.96 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Processed Source List.  
  COMMENTS:        All 4 attachments are included.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:23:39 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     557771,   Seg_Num: 0
  POINT_RA:         24.523d {+01h 38m 06s} (J2000)
  POINT_DEC:       +41.490d {+41d 29' 25"} (J2000)
  ROLL:            96.053d
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  83829.98 SOD {23:17:09.98} UT,   168.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     392426240
  X_OFFSET:        1135 [pixels]
  Y_OFFSET:        529 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1295
  Y_GRB_POS:       689
  BINNING_INDEX:   1
  IM_URL:          sw00557771000msuni0179.fits
  SUN_POSTN:        77.30d {+05h 09m 11s}  +22.92d {+22d 55' 23"}
  SUN_DIST:         47.37 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.07d {+05h 24m 17s}  +20.18d {+20d 10' 36"}
  MOON_DIST:        51.83 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.24,-20.54 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       38.84, 28.96 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Image.  
  COMMENTS:        The GRB Position came from the XRT Position Command.  
  COMMENTS:        The image has 2x2 binning (compression).  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:23:59 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     557771,   Seg_Num: 0
  POINT_RA:         24.523d {+01h 38m 06s} (J2000)
  POINT_DEC:       +41.490d {+41d 29' 25"} (J2000)
  ROLL:            96.053d
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  83829.98 SOD {23:17:09.98} UT,   168.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     392426240
  X_OFFSET:        1135 [pixels]
  Y_OFFSET:        529 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1295
  Y_GRB_POS:       689
  BINNING_INDEX:   1
  IM_URL:          sw00557771000msuni0179.fits
  SUN_POSTN:        77.30d {+05h 09m 11s}  +22.92d {+22d 55' 23"}
  SUN_DIST:         47.37 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.07d {+05h 24m 18s}  +20.18d {+20d 10' 36"}
  MOON_DIST:        51.83 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.24,-20.54 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       38.84, 28.96 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Processed Image.  
  COMMENTS:        The GRB Position came from the XRT Position Command.  
  COMMENTS:        The image has 2x2 binning (compression).  
  COMMENTS:        All 4 attachments are included.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:25:54 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     557771,   Seg_Num: 0
  POINT_RA:         24.523d {+01h 38m 06s} (J2000)
  POINT_DEC:       +41.489d {+41d 29' 21"} (J2000)
  POINT_ROLL:      96.051d
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  83987.99 SOD {23:19:47.99} UT,   326.7 [sec] since BAT Trigger Time
  FILTER:          7, U
  BKG_MEAN:        1.600
  N_STARS:         47
  X_OFFSET:        815 [pixels]
  Y_OFFSET:        209 [pixels]
  X_MAX:           1774 [pixels]
  Y_MAX:           1168 [pixels]
  DET_THRESH:      11
  PHOTO_THRESH:    5
  SL_URL:          sw00557771000msufc0326.fits
  SUN_POSTN:        77.30d {+05h 09m 12s}  +22.92d {+22d 55' 24"}
  SUN_DIST:         47.37 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.09d {+05h 24m 22s}  +20.18d {+20d 10' 35"}
  MOON_DIST:        51.84 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.24,-20.54 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       38.84, 28.96 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:26:23 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     557771,   Seg_Num: 0
  POINT_RA:         24.523d {+01h 38m 06s} (J2000)
  POINT_DEC:       +41.489d {+41d 29' 21"} (J2000)
  POINT_ROLL:      96.051d
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  83987.99 SOD {23:19:47.99} UT,   326.7 [sec] since BAT Trigger Time
  FILTER:          7, U
  BKG_MEAN:        1.600
  N_STARS:         47
  X_OFFSET:        815 [pixels]
  Y_OFFSET:        209 [pixels]
  X_MAX:           1774 [pixels]
  Y_MAX:           1168 [pixels]
  DET_THRESH:      11
  PHOTO_THRESH:    5
  SL_URL:          sw00557771000msufc0326.fits
  SUN_POSTN:        77.30d {+05h 09m 12s}  +22.92d {+22d 55' 24"}
  SUN_DIST:         47.37 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.10d {+05h 24m 23s}  +20.18d {+20d 10' 35"}
  MOON_DIST:        51.85 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.24,-20.54 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       38.84, 28.96 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Processed Source List.  
  COMMENTS:        All 4 attachments are included.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:27:23 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     557771,   Seg_Num: 0
  POINT_RA:         24.523d {+01h 38m 06s} (J2000)
  POINT_DEC:       +41.489d {+41d 29' 21"} (J2000)
  ROLL:            96.051d
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  83987.99 SOD {23:19:47.99} UT,   326.7 [sec] since BAT Trigger Time
  FILTER:          7, U
  EXPOSURE_ID:     392426398
  X_OFFSET:        1135 [pixels]
  Y_OFFSET:        529 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1295
  Y_GRB_POS:       689
  BINNING_INDEX:   1
  IM_URL:          sw00557771000msuni0337.fits
  SUN_POSTN:        77.30d {+05h 09m 12s}  +22.92d {+22d 55' 24"}
  SUN_DIST:         47.37 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.10d {+05h 24m 25s}  +20.18d {+20d 10' 35"}
  MOON_DIST:        51.85 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.24,-20.54 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       38.84, 28.96 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Image.  
  COMMENTS:        The GRB Position came from the XRT Position Command.  
  COMMENTS:        The image has 2x2 binning (compression).  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:27:33 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     557771,   Seg_Num: 0
  POINT_RA:         24.523d {+01h 38m 06s} (J2000)
  POINT_DEC:       +41.489d {+41d 29' 21"} (J2000)
  ROLL:            96.051d
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  83987.99 SOD {23:19:47.99} UT,   326.7 [sec] since BAT Trigger Time
  FILTER:          7, U
  EXPOSURE_ID:     392426398
  X_OFFSET:        1135 [pixels]
  Y_OFFSET:        529 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1295
  Y_GRB_POS:       689
  BINNING_INDEX:   1
  IM_URL:          sw00557771000msuni0337.fits
  SUN_POSTN:        77.30d {+05h 09m 12s}  +22.92d {+22d 55' 24"}
  SUN_DIST:         47.37 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.11d {+05h 24m 25s}  +20.18d {+20d 10' 35"}
  MOON_DIST:        51.85 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.24,-20.54 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       38.84, 28.96 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Processed Image.  
  COMMENTS:        The GRB Position came from the XRT Position Command.  
  COMMENTS:        The image has 2x2 binning (compression).  
  COMMENTS:        All 4 attachments are included.  
  

  
• GCN Circular #14827
  H. A. Krimm (CRESST/GSFC/USRA), D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), N. Gehrels (NASA/GSFC), D. Malesani (DARK/NBI), F. E. Marshall (NASA/GSFC), A. Maselli (INAF-IASFPA), A. Melandri (INAF-OAB), D. M. Palmer (LANL) and T. N. Ukwatta (MSU) report on behalf of the Swift Team:
  At 23:14:21 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 130608A (trigger=557771). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 24.580, +41.494 which is

     RA(J2000) = 01h 38m 19s
     Dec(J2000) = +41d 29' 38"
  

  with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve suggests a broad weak peak from T-20 to T+40 s. The maximum count rate was ~500 counts/sec (15-350 keV), at ~0 sec after the trigger.
  The XRT began observing the field at 23:17:02.9 UT, 161.6 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source with an enhanced position: RA, Dec 24.6087, 41.5027 which is equivalent to:

     RA(J2000)  = 01h 38m 26.08s
     Dec(J2000) = +41d 30' 09.7"
  

  with an uncertainty of 2.7 arcseconds (radius, 90% containment). This location is 83 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper. We cannot determine whether the source is fading at the present time.
  A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (6.62 x 10^20 cm^-2, Kalberla et al. 2005), with an excess column of 6.2 (+5.87/-4.48) x 10^21 cm^-2 (90% confidence).
  The initial flux in the 2.5 s image was 4.77e-10 erg cm^-2 s^-1 (0.2-10 keV).
  UVOT took a finding chart exposure of 150 seconds with the White filter starting 168 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The typical 3-sigma upper limit has been about 19.6 mag. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.06.
  Burst Advocate for this burst is H. A. Krimm (krimm AT milkyway.gsfc.nasa.gov). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:32:36 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     557771,   Seg_Num: 0
  POINT_RA:         24.523d {+01h 38m 05s} (J2000)
  POINT_DEC:       +41.489d {+41d 29' 20"} (J2000)
  POINT_ROLL:      96.051d
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  84519.18 SOD {23:28:39.18} UT,   857.8 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        6.929
  N_STARS:         145
  X_OFFSET:        575 [pixels]
  Y_OFFSET:        0 [pixels]
  X_MAX:           2014 [pixels]
  Y_MAX:           1439 [pixels]
  DET_THRESH:      23
  PHOTO_THRESH:    14
  SL_URL:          sw00557771000msufc0857.fits
  SUN_POSTN:        77.30d {+05h 09m 13s}  +22.92d {+22d 55' 25"}
  SUN_DIST:         47.38 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.15d {+05h 24m 36s}  +20.18d {+20d 10' 33"}
  MOON_DIST:        51.89 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.24,-20.54 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       38.84, 28.96 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:32:58 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     557771,   Seg_Num: 0
  POINT_RA:         24.523d {+01h 38m 05s} (J2000)
  POINT_DEC:       +41.489d {+41d 29' 20"} (J2000)
  POINT_ROLL:      96.051d
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  84519.18 SOD {23:28:39.18} UT,   857.8 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        6.929
  N_STARS:         145
  X_OFFSET:        575 [pixels]
  Y_OFFSET:        0 [pixels]
  X_MAX:           2014 [pixels]
  Y_MAX:           1439 [pixels]
  DET_THRESH:      23
  PHOTO_THRESH:    14
  SL_URL:          sw00557771000msufc0857.fits
  SUN_POSTN:        77.30d {+05h 09m 13s}  +22.92d {+22d 55' 25"}
  SUN_DIST:         47.38 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.15d {+05h 24m 37s}  +20.18d {+20d 10' 33"}
  MOON_DIST:        51.89 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.24,-20.54 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       38.84, 28.96 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Processed Source List.  
  COMMENTS:        All 4 attachments are included.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:34:18 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     557771,   Seg_Num: 0
  POINT_RA:         24.523d {+01h 38m 05s} (J2000)
  POINT_DEC:       +41.489d {+41d 29' 20"} (J2000)
  ROLL:            96.051d
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  84519.18 SOD {23:28:39.18} UT,   857.8 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     392426929
  X_OFFSET:        1134 [pixels]
  Y_OFFSET:        559 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1294
  Y_GRB_POS:       719
  BINNING_INDEX:   1
  IM_URL:          sw00557771000msuni0868.fits
  SUN_POSTN:        77.30d {+05h 09m 13s}  +22.92d {+22d 55' 25"}
  SUN_DIST:         47.38 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.17d {+05h 24m 40s}  +20.18d {+20d 10' 32"}
  MOON_DIST:        51.90 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.24,-20.54 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       38.84, 28.96 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Image.  
  COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
  COMMENTS:        The image has 2x2 binning (compression).  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:34:24 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     557771,   Seg_Num: 0
  POINT_RA:         24.523d {+01h 38m 05s} (J2000)
  POINT_DEC:       +41.489d {+41d 29' 20"} (J2000)
  ROLL:            96.051d
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  84519.18 SOD {23:28:39.18} UT,   857.8 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     392426929
  X_OFFSET:        1134 [pixels]
  Y_OFFSET:        559 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       1294
  Y_GRB_POS:       719
  BINNING_INDEX:   1
  IM_URL:          sw00557771000msuni0868.fits
  SUN_POSTN:        77.30d {+05h 09m 13s}  +22.92d {+22d 55' 25"}
  SUN_DIST:         47.38 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.17d {+05h 24m 40s}  +20.18d {+20d 10' 32"}
  MOON_DIST:        51.90 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.24,-20.54 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       38.84, 28.96 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Processed Image.  
  COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
  COMMENTS:        The image has 2x2 binning (compression).  
  COMMENTS:        All 4 attachments are included.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 08 Jun 13 23:26:29 UT
  NOTICE_TYPE:     Swift-XRT Position UPDATE
  TRIGGER_NUM:     557771,   Seg_Num: 0
  GRB_RA:           24.6086d {+01h 38m 26.06s} (J2000),
                    24.8085d {+01h 39m 14.02s} (current),
                    23.8674d {+01h 35m 28.17s} (1950)
  GRB_DEC:         +41.5026d {+41d 30' 09.3"} (J2000),
                   +41.5706d {+41d 34' 13.9"} (current),
                   +41.2487d {+41d 14' 55.4"} (1950)
  GRB_ERROR:       2.7 [arcsec radius, statistical plus systematic, 90% containment]
  GRB_INTEN:       1.00e-10 [erg/cm2/sec]
  GRB_SIGNIF:      10.00 [sigma]
  IMG_START_DATE:  16451 TJD;   159 DOY;   13/06/08
  IMG_START_TIME:  83911.00 SOD {23:18:31.00} UT,   249.7 [sec] since BAT Trigger Time
  TAM[0-3]:        100.00 100.00 100.00 100.00
  AMPLIFIER:       1
  WAVEFORM:        31
  SUN_POSTN:        77.30d {+05h 09m 12s}  +22.92d {+22d 55' 24"}
  SUN_DIST:         47.31 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
  MOON_POSTN:       81.10d {+05h 24m 23s}  +20.18d {+20d 10' 35"}
  MOON_DIST:        51.78 [deg]
  MOON_ILLUM:      0 [%]
  GAL_COORDS:      132.30,-20.51 [deg] galactic lon,lat of the burst
  ECL_COORDS:       38.92, 28.94 [deg] ecliptic lon,lat of the burst
  COMMENTS:        SWIFT-XRT Coordinates.  
  COMMENTS:        This Notice was ground-generated -- not flight-generated.  
  COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
  COMMENTS:        TAM values, flux and significance fields are not valid.  
  COMMENTS:        This position was automatically generated on the ground using  
  COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
  COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
  COMMENTS:        This position was enhanced using UVOT field astrometry.  
  COMMENTS:        The probability that this is a serendipitous source in the  
  COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.  
  

• GCN Circular #14829
  J.C.Tello, M.Jelinek, (IAA-CSIC) J.Gorosabel (UPV-EY, IAA-CSIC), A.J.Castro-Tirado, R. Sanchez-Ramirez (IAA-CSIC), on behalf of a larger collaboration report:
  We observed the field of GRB130608A (Krimm et al. GCNC 14827) with the BOOTES-2/TELMA telescope located in Malaga, Spain, starting at 02h31m UT (136 minutes after the burst, when the source rose above the local horizon). No new source is visible within the XRT error circle.
  During a first epoch we combined 11 images with an unfiltered exposure of 60 seconds each that begun at 02h31m45s (136 minutes after the burst) and ended at 02h44m21s (mean time 142 minutes after the burst), and a limiting magnitude of 18.8 was obtained when compared to the values of R2Mag of the field stars as stated in the USNO-B1 catalog.
  During a 2nd epoch we combined 22 images with an unfiltered exposure of 60 seconds each that begun at 3h00m11s (165 minutes after the burst) and ended at 3h22m08s (mean time 176 minutes after the burst), and we obtained a limiting magnitude of 19.5 when compared to the values of R2Mag of the field stars as stated in the USNO-B1 catalog.
• GCN Circular #14832
  A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team.
  Using 952 s of XRT Photon Counting mode data and 2 UVOT images for GRB 130608A, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 24.61111, +41.50289 which is equivalent to:

  RA (J2000): 01h 38m 26.67s
  Dec (J2000): +41d 30' 10.4"
  

  with an uncertainty of 1.7 arcsec (radius, 90% confidence).
  This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
  This circular was automatically generated, and is an official product of the Swift-XRT team.
• GCN Circular #14833
  H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
  Using the data set from T-60 to T+243 sec from the recent telemetry downlink, we report further analysis of BAT GRB 130608A (trigger #557771) (Krimm, et al., GCN Circ. 14827). The BAT ground-calculated position is RA, Dec = 24.594, 41.485 deg, which is

     RA(J2000)  =  01h 38m 22.5s 
     Dec(J2000) = +41d 29' 05.0" 
  

  with an uncertainty of 2.8 arcmin, (radius, sys+stat, 90% containment). The partial coding was 45%.
  The mask-weighted light curve shows a broad peak starting at ~T-25 sec, peaking at ~T+5 sec, and ending at ~T+50 sec. T90 (15-350 keV) is 44.4 +- 8.0 sec (estimated error including systematics).
  The time-averaged spectrum from T-25.56 to T+24.18 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 3.21 +- 0.34. The fluence in the 15-150 keV band is 6.4 +- 1.0 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+19.06 sec in the 15-150 keV band is 0.6 +- 0.3 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
  The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/557771/BA/
• GCN Circular #14836
  Alan M. Watson (UNAM), Nat Butler (ASU), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB) J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UCSC), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), Jos=E9 A. de Diego (UNAM), Leonid Georgiev (UNAM), Jes=FAs Gonz=E1lez (UNAM), Carlos Rom=E1n-Z=FA=F1iga (UNAM), Neil Gehrels= (GSFC), and Harvey Moseley (GSFC) report:
  We observed the field of GRB 130608A (Krimm, et al., GCN 14827) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astron=F3mico Nacional on Sierra San Pedro M=E1rtir in morning twilight from 2013/06 9.46 to 2013/06 9.47 UTC (11.70 to 12.00 hours after the BAT trigger), obtaining a total of 0.20 hours exposure in the r' and i' bands and 0.08 hours exposure in the Z, Y, J, and H bands.
  For a source within the Swift-XRT error circle (Beardmore, et al., GCN 14832), in comparison with the RATIR zero points and 2MASS, we obtain the following upper limits (3-sigma):

   r'    > 21.90
   i'    > 22.27
   Z     > 21.21
   Y     > 20.64
   J     > 20.12
   H     > 19.80
  

  These magnitudes are in the AB system and not corrected for Galactic extinction in the direction of the GRB.
  We thank the staff of the Observatorio Astron=F3mico Nacional in San Pedr= o M=E1rtir.
• GCN Circular #14838
  K.L. Page (U. Leicester), C. Pagani (U. Leicester), V. Mangano (INAF-IASFPA), A. Melandri (INAF-OAB), B. Sbarufatti (INAF-OAB/PSU), M.C. Stroh (PSU), D.N. Burrows (PSU), J.A. Kennea (PSU), A.P. Beardmore (U. Leicester) and H.A. Krimm report on behalf of the Swift-XRT team:
  We have analysed 9.4 ks of XRT data for GRB 130608A (Krimm et al. GCN Circ. 14827), from 147 s to 47.3 ks after the BAT trigger. The data comprise 98 s in Windowed Timing (WT) mode (the first 10 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Beardmore et al. (GCN. Circ 14832).
  The light curve can be modelled with an initial power-law decay with an index of alpha=4.33 (+0.26, -0.23), followed by a break at T+653 s to an alpha of 0.40 (+0.11, -0.12).
  A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 3.23 (+0.27, -0.25). The best-fitting absorption column is 1.0 (+0.4, -0.3) x 10^21 cm^-2, in excess of the Galactic value of 6.6 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 2.40 (+0.36, -0.11) and a best-fitting absorption column consistent with the Galactic value. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.0 x 10^-11 (4.0 x 10^-11) erg cm^-2 count^-1.
  A summary of the PC-mode spectrum is thus:

  Total column:	     0 (+4.9, -0) x 10^20 cm^-2
  Galactic foreground: 6.6 x 10^20 cm^-2
  Excess significance: <1.6 sigma
  Photon index:	     2.40 (+0.36, -0.11)
  

  If the light curve continues to decay with a power-law decay index of 0.40, the count rate at T+24 hours will be 7.3 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 2.2 x 10^-13 (3.0 x 10^-13) erg cm^-2 s^-1.
  The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00557771.
  This circular is an official product of the Swift-XRT team.
• GCN Circular #14850
  H. A. Krimm (GSFC/USRA)for the Swift-BAT team:
  Using the full data set from T-239 to T+963 sec,we report further analysis of BAT GRB 130608A (trigger #557771)(Krimm, et al., GCN Circ. 14827; Krimm, et al., GCN Circ. 14833). Information in this Circular supersedes that presented in Krimm, et al., GCN Circ. 14833.
  The BAT ground-calculated position isrefined to RA, Dec = 24.597, 41.492 deg which is

      RA(J2000)  =  01h 38m 23.3s
      Dec(J2000) = +41d 29' 30.5"
  

  with an uncertainty of 2.5 arcmin, (radius, sys+stat, 90% containment). The partial coding was 45%.
  The initial Swift-BAT circular reported a broad peak starting at ~T-25 sec, peaking at ~T+5 sec, and ending at ~T+50 sec. With further data available we see that the mask-weighted light curve contains precursor emission from~T-150 sec to ~T-90. BAT did not trigger on this precursor because it occurred during a slew to the field containing the burst. T90 (15-350 keV) is 151.38 +- 10.84 sec (estimated error including systematics).
  The time-averaged spectrum from T-134.19 to T+22.20 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.71 +- 0.41. The fluence in the 15-150 keV band is 9.0 +- 1.9 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from T+19.06 sec in the 15-150 keV band is 0.6 +- 0.3 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
  The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/557771/BA/
• GCN Circular #14861
  A. Volnova (IKI), V. Linkov (ISON), M.Suvorov (ISON), V. Nevskiy (ISON), D. Ivanov (ISON), I. Molotov (KIAM), A. Pozanenko (IKI), report on behalf of larger collaboration:
  We observed the field of GRB 130608A (Krimm et al., GCN 14827) with SANTEL-400AN (0.4-m f/3) telescope of ISON-Kislovodsk observatory. Observations started on Jun. 09 (UT) 00:01:42. We obtained several unfiltered images of 60 s exposure. We do not detect any source within enhanced XRT error circle (Beardmore et al., GCN 14832). Preliminary photometry of combined image is based on USNO-B1.0 (R2) nearby stars:

  T_start,             T0+,      Exp,   Filter,  UL (3 sigma)
  (UT)                 mid (d)   (s)
  
  2013-06-09T00:01:42  0.04170   960    none     >18.1
  

• GCN Circular #14870
  S. T. Holland (STScI) and Hans Krimm (CRESST/GSFC/USRA) report on behalf of the Swift/UVOT team:
  The Swift/UVOT began settled observations of the field of GRB 130608A starting 168 s after the BAT trigger (Krimm et al. 2013, GCNC 14827). We do not detect any new source consistent with the UVOT-enhanced XRT position (Beardmore 2013, GCNC 14832) in any of the UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the finding chart (FC) exposures and initial summed exposures are presented below.

  Filter      TSTART      TSTOP   Exposure      Mag
  -------------------------------------------------
  white (FC)     169        318        147    >21.0
                 607        626         19    >19.6
  u (FC)         327        576        246    >20.1
                 731        750         19    >18.4
  -------------------------------------------------
  v              657     12,041       1154    >20.6
  b              583       6742        452    >20.8
  u             4899       6536        393    >20.5
  uvw1           706       6331        432    >20.6
  uvm2           681     12,759       1134    >21.3
  uvw2           632     11,127       1199    >21.5
  white          858       6946        560    >21.5
  -------------------------------------------------
  

  The quoted upper limits have not been corrected for the expected extinction due to the Galactic reddening along the line of sight to this burst of E(B-V) = 0.05 mag (Schlafly et al. 2011, ApJS, 737, 103).
• GCN Report 434.1
  GCN_Report 434.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_434_1.pdf by H.A. Krimm at GSFC/USRA titled: "Swift Observations of GRB 130608A"