Programme ID: 60.A-9284(E) Instrument: HAWK-I Approved execution time: 27 hours Type: SV PI: Jean-Paul KNEIB jean-paul.kneib@oamp.fr Title: A Deep Infrared Survey through a Massive Cluster Lens + Unveiling the universe at z > 7 with HAWK-I # * General Description: A deep Y, J, H, K and NB1060 imaging of a massive X-ray luminous cluster at z~0.45, using a single HAWK-I pointing (no mosaic). The observations use the HAWKI_img_obs_AutoJitter template. There should be 4 OBs in Y, 6 OBs in J, 5 OBs in H and K and 7 in NB1060. All OBs are 1 hour. i) DITs, NDITs and the number of exposures. These as been derived from the HAWK-I Manual recommendation, change if necessary (a minimum of 9 exposure per OB is required). For NB1060 use DIT=340, NDIT=1, NEXPO=9 [adjust DIT to fit in 1h OB] For Y use DIT=340, NDIT=1, NEXPO=9 [adjust DIT to fit in 1h OB] For J use DIT=90, NDIT=3, NEXPO=11 [adjust DIT to fit in 1h OB] For H use DIT=15, NDIT=8, NEXPO=25 [adjust NEXPO to fit in 1h OB] For Ks use DIT=20, NIDT=6, NEXPO=25 [adjust NEXPO to fit in 1h OB] ii) The size of the jitter box should be 20" (allowing to fill in the chip gaps, without impacting too much the overall image) iii) The coordinates (J2000) of the MS0451 pointings is: 04:54:15.07 -03:01:53.50 * Waiver Requests: none * Critical Observing Conditions Constraints: To reach the science goals of the program we request a seeing constraints of < 0.8" (at the seeing monitor - i.e. in optical). The scientific return will benefit even more from the best seeing conditions < 0.6" (at the seeing monitor) but this is not a requirement. For Y and NB1060 we can observe 4 days from the full moon, and we request a minimum distance to the moon of > 50 degrees. For J,H, K we can observe in all moon phases, but we request a minimum distance to the moon of > 40 degrees. We would prefer that no observations are taken within 20 minutes of zenith (this would cause a bad sky-subtraction). We request an airmass lower than 2.5 * Time-Critical Aspects: none * Special Execution Requirements: We propose to conduct the observations in the order of priority: NB1060, Y-Band, K-band and H-band. Regarding the J-band observations, to possibly find SN in this cluster field (and possibly lensed one) we propose to split the J-band observation during the 3 SV run (2 OBs in J in each run). Assuming an equal a roughly equal amount of time allocated to this program in each of the 3 SV runs, this would mean (note this is only a possible splitting of the observations, and this should be adapted with the observational constraints): October run: 2 OBs in J 7 OBs in NB1060 November run: 2 OBs in J 4 OBs in Y 3 OBS in K January run: 2 OBs in J 2 OBS in K 5 OBs in Y * Special Calibration Information: none * ToO Information: none # Estimated Total Execution Time: 27 hours # Is this a Pre-imaging run? no # finding chart: the finder is showing the cluster field with the field of view of Hawk-I marked in blue and the cluster location (red and yellow lines).