Table 1 Details of the HST Observations.

The numbers in the “No. of exp.” column correspond to the number of exposures taken with the corresponding “Exp. time” specified in the previous column. The last column gives the projected separation between the lens and the undeflected position of the source.

EpochObs. dateFilterSubarray size (pixels)Exp. time (s)No. of exp.Lens-source separation (′′)
11 Oct 2013F814W
F606W
2048 × 2048
2048 × 2048
0.5/250
0.5/250
2/3
2/2
0.943
26 Jan 2014F814W
F606W
2048 × 2048
2048 × 2048
1/270
0.5/270
2/3
2/2
0.434
310 Feb 2014F814W
′′
F763M
1024 × 1024
2048 × 2048
512 × 512
1/50
1/50
2/90
3/3
1/1
11/11
0.203
427 Mar 2014F814W
′′
F763M
1024 × 1024
2048 × 2048
512 × 512
1/50
1/50
0.5/8
3/3
1/1
11/19
0.205
54 Apr 2014F814W
′′
F763M
1024 × 1024
2048 × 2048
512 × 512
1/50
1/50
0.5/8
3/3
1/1
11/19
0.262
629 Apr 2014F814W1024 × 10242/3/758/8/80.462
71 Oct 2014F814W
F606W
2048 × 2048
2048 × 2048
1/240
0.5/240
3/3
2/2
1.478
814 Oct 2015F814W
F763M
2048 × 2048
2048 × 2048
1/240
0.5
3/5
2
3.897