LDSS3 data from Jan 30-31 run. The cluster MS1008 was observed for 2 hours under seeing of ~ 1.3"-1.8". I found 5 arcs with emission features. I confirmed Arc1a and Arc2 to be multiple images. Below my summary by Ramesh:
MS1008 (z=0.3062):
Object RA DEC Emission lines spec-z Notes
Arc3a 10:10:31.623 -12:39:28.45 [OII]3727 1.301 Emission feature at 8578 angstrom. Photo-z=1.3
Arc9b 10:10:32.677 -12:39:43.76 [OII]3727 1.216 Emission feature at 8264 angstrom.
Arc11 10:10:34.207 -12:41:28.82 [OII]3727 0.550 Faint emission line at 5779. No other emission feature visible. photo-z=0.55.
Arc2 10:10:32.658 -12:39:58.44 Lyman-alpha 3.021 Emission line at 4888 angstrom.
Arc1a 10:10:33.182 -12:39:51.66 Lyman-alpha 3.021 Emission line at 4888 angstrom.