0 Assigned ID: 384 ----- Attempting Submission 1 (Fri Apr 08 04:34:12 GMT 2016) ----- HST Phase I Proposal 384 (NGC2024_Cycle24.apt) successfully submitted. Receipt: # 384-1 ----- Attempting Submission 2 (Fri Apr 08 21:10:29 GMT 2016) ----- POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE 0 ----- Attempting Submission 1 (Thu Jul 21 16:55:01 GMT 2016) ----- ----- Attempting Submission 2 (Wed Jul 27 19:25:36 GMT 2016) ----- We are using the new DASH method for observing large areas with the WFC3/IR camera in an efficient way. The instructions on planning DASH observations indicate that we should ignore the POS TARG warnings that the offset is larger than the instrument field of view. (see http://www.stsci.edu/hst/wfc3/documents/newsletters/STAN_06_10_2016#section4) POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE POS TARG OUTSIDE OF APERTURE 0 Taming the Flame: A Near-IR imaging study of the NGC 2024 (Flame Nebula) cluster We propose to obtain HST WFC3/IR observations of the young (1 Myr) NGC 2024 (Flame Nebula) cluster in Orion. We will employ a recently developed technique --called the "drift and shift" or DASH method-- to efficiently map large regions with WFC3 in order to map a ~16' x 16' (~ 2 x 2 pc) area that will cover most of the cluster in only 8 orbits. The proposed observations of the Flame Nebula will provide us with WFC3/IR (F160W) images with a resolution of ~80 AU, which we will use to: 1) determine the fraction of multiple systems and their properties in a dense and young environment for comparison to existing HST multiplicity studies of lower density environments in the Orion clouds and the denser Orion Nebula Cluster (ONC); 2) resolve the structure of disks, infalling envelopes and outflow cavities around protostars in a young cluster, and 3) measure the proper motions of stars in the cluster core. NGC 2024 is the second largest and densest cluster in Orion after the ONC. A large number of HST programs have studied the multiple systems, disks, outflows and proper motions of stars in the older (~2-3 Myr), optically visible, ONC. With the new wide-field IR imaging capabilities in HST, it is now the time to study "ONC's younger (and embedded) cousin" NGC 2024, in order to better understand how clusters (and the stars inside them) form and evolve. This program will use the new "Drift And SHift" (DASH) technique for wide-field NIR imaging, which is available for general use for the first time in this cycle (Cycle 24). With this method one can observe eight (8) adjacent "pointings" (each covering the ~2' x 2' field of view of the WFC3/IR camera) in a single orbit. The high mapping efficiency of the DASH technique relies on having the telescope guiding be mostly done by its three gyroscopes, with the FGS turned off for the vast majority of each orbit (i.e., only turned on for the first of eight pointings per orbit). That is, the first exposure in each orbit is guided (PCS mode = FINE) and observed the conventional way. The second and subsequent exposures are taken in gyro-only mode (PCS mode = GYRO). Turning off the FGS results in a very small drift in the telescope pointing (or exposure) that is about 0.05" (i.e., less than half a pixel) for each 25 s individual (non-destructive) read. Each exposure will consist of eleven to twelve independent non-destructive reads, which will be shifted and combined when reducing the data to create an "un-smeared" image. We will use one orbit per visit, and each visit will be composed of 8 exposures. Each of exposure will be made of eleven to twelve 25 seconds non-destructive read. Hence, once the reads are combined, each exposure be the equivalent of a ~300 seconds image. In 8 orbits we will cover 64 pointings. We will cover the area of interest, the cluster NGC 2024, with a mosaic of eight by eight pointings. The cluster we plan to observe has an approximately round shape. Hence, in principle we do not have any constrains on the orient angle other than that all pointings should be taken with the same orientation. However, in order to be able to give precise positions of the different pointings we need to chose a particular orient angle in this phase 2 submission. We therefore chose an orientation that has a large range of available days (about 100) and all those days are available after Dec. 29, 2016 (in case there are still projects from the previous cycle still being observed in the fall of 2016). If this orient falls in an area where there is substantial oversubscription, we could then change the orient angle and re-do the phase 2 submission with the new pointings (if that is an option). We request that the sequences of 8 exposures are not interrupted due to SAA avoidance. Hence, for each visit we have grouped all eight exposures into a non-interruptable sequence. Stellar Physics 6 false false false false false false SUPPORTED STELLAR CLUSTER STAR FORMING REGION This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 Brightest star H = 11.9 mag STELLAR CLUSTER STAR FORMING REGION This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 Brightest star H = 14.1 mag STELLAR CLUSTER STAR FORMING REGION This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 Brightest star H = 12.1 mag STELLAR CLUSTER STAR FORMING REGION This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 Brightest star H = 11.8 mag STELLAR CLUSTER STAR FORMING REGION This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 Brightest star H = 10.5 mag STELLAR CLUSTER STAR FORMING REGION This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 Brightest star H = 10.4 mag STELLAR CLUSTER STAR FORMING REGION This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 Brightest star H = 10.5 mag STELLAR CLUSTER STAR FORMING REGION This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 Brightest star H = 6.5 mag WFC3/IR Imaging No No F160W The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. 1515554925000 52.0 (Tic-Visit :proposal-id 14624 :visit-id "01" :proposal-version -1 :trans-version "20160601" :date "26-Jul-2016 13:41:58.0" :trans-errors '(:WARNINGS 7 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1758336 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14624 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14624 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2862 :al-overhead-at-end 0 :internal-dur-at-end 576 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. 1515635086000 52.0 (Tic-Visit :proposal-id 14624 :visit-id "02" :proposal-version -1 :trans-version "20160601" :date "26-Jul-2016 13:42:00.0" :trans-errors '(:WARNINGS 7 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1758336 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14624 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14624 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2860 :al-overhead-at-end 0 :internal-dur-at-end 576 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) false 1 0 The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. 1515720820000 52.0 (Tic-Visit :proposal-id 14624 :visit-id "03" :proposal-version -1 :trans-version "20160601" :date "26-Jul-2016 13:42:03.0" :trans-errors '(:WARNINGS 7 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1758336 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14624 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14624 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2855 :al-overhead-at-end 0 :internal-dur-at-end 576 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. 1516281493000 52.0 (Tic-Visit :proposal-id 14624 :visit-id "04" :proposal-version -1 :trans-version "20160601" :date "26-Jul-2016 13:42:05.0" :trans-errors '(:WARNINGS 7 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1758336 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14624 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14624 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2855 :al-overhead-at-end 0 :internal-dur-at-end 576 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. 1516344506000 52.0 (Tic-Visit :proposal-id 14624 :visit-id "05" :proposal-version -1 :trans-version "20160601" :date "26-Jul-2016 13:42:08.0" :trans-errors '(:WARNINGS 7 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1758336 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14624 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14624 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2855 :al-overhead-at-end 0 :internal-dur-at-end 576 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) false 1 0 The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. 1516447503000 52.0 (Tic-Visit :proposal-id 14624 :visit-id "06" :proposal-version -1 :trans-version "20160601" :date "26-Jul-2016 13:42:10.0" :trans-errors '(:WARNINGS 7 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1758336 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14624 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14624 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2855 :al-overhead-at-end 0 :internal-dur-at-end 576 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) false 1 0 (Tic-Visit :proposal-id 14624 :visit-id "06" :proposal-version -1 :trans-version "20160601" :date "26-Jul-2016 13:42:10.0" :trans-errors '(:WARNINGS 7 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1758336 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14624 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14624 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2855 :al-overhead-at-end 0 :internal-dur-at-end 576 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) false 1 0 The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. 1516641993000 52.0 (Tic-Visit :proposal-id 14624 :visit-id "07" :proposal-version -1 :trans-version "20160601" :date "26-Jul-2016 13:42:12.0" :trans-errors '(:WARNINGS 7 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1758336 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14624 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14624 :visit-id "07" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2855 :al-overhead-at-end 0 :internal-dur-at-end 576 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. 1517746271000 52.0 (Tic-Visit :proposal-id 14624 :visit-id "08" :proposal-version -1 :trans-version "20160601" :date "26-Jul-2016 13:42:14.0" :trans-errors '(:WARNINGS 7 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1758336 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14624 :visit-id "08" :obset-id "08" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14624 :visit-id "08" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2855 :al-overhead-at-end 0 :internal-dur-at-end 576 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3210 :pcs-gap 0 ) true 1 0