README web version of /home/usg/OPS/MTS/readme_xml/readme_83039800

Principal Investigator Email Address

• ariel@physto.se

Estimated Total Execution Time (hours, including overheads)

• 10.4

General Description

• The observing program aims to discover very high-redshift gravitationally
   magnified supernovae in galaxies behind the massive galaxy cluster Abell 1689. The
   cluster will be observed 8 times during the period 20 Apr 2009 - 31 Jul 2009 - 4
   times every ~30 days in J band and  4 more times every ~30 days in Y band. The Y
   and J band observations should be obtained close in time. The main search filter
   is J and so the J-band OBs have higher priority than Y-band.
  
  IMPORTANT: Please respect the seeing constraint, as the aims of this program relys
   on the seeing being 0.8" or better.
  
  Another cluster, AC 114, will also be observed within this program (runs: 083.A-0398(C-D)).
   Note that Abell 1689 (runs 083.A-0398(A-B)) has higher priority than AC 114.
  
  Each Epoch has 2 hours total on-sourse exposure time and consists of 3 OBs that
   will be stacked together to create deep images that will be searched for supernovae.
  
  This is a simple imaging run with repeated J-band jitters on the massive galaxy
   cluster Abell 1689. The Y-band observations are in the run ID: 083.A-0398(B).

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• None beyond those specified in the OBs

Time-Critical Aspects

• To optimize the supernova search, the 4 Epochs of observations (3 OBs
   each) should to be on average separated by ~30 days (20 to 45 days separation is
   also OK). In the Time Intervals field of the OBs we have specified the valid time
   windows for OB execution, assuming that the 1st Epoch OBs will be observed around
   25 April 2009. However, depending on when exactly the 1st Epoch OBs are observed,
   we may need to adjust the "Time intervals" of the 2, 3 and 4rd Epoch OBs.
  
  1. The 3 OBs of given "Epoch" of observations should be observed within 7-10 days
   (because they will be stacked together). However, we strongly prefer that all 3
   OBs are observed in a single night one after another in order to make the sky subtraction
   easier and more reliable. It will also simplify the following anaisys (e.g. estimation
   of the supernova rates).
  
  2. The OBs of 2 consequtive "Epochs" are observed approximatelly 30 days apart.
   Once given "Epoch" OBs are observed, the next "Epoch" OBs should be extecuted ~30
   days after. Each J band epoch should be complemented by an Y-band observations defined
   in the run 083.A-0398(B).

Special Execution Requirements

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Special Calibration Information

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ToO Information

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ToO Activators List

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Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

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Source(s) of Pre-imaging

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Pre-imaging sources not listed above

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Do all your OBs comply with the instrument-specific requirements listed
 on the instrument-specific Phase 2 web page ?

• YES

If this is a pre-imaging run, did you select PRE-IMAGING for the Observing
 Category for each Observing Template ?

• N/A

Do all your finding charts comply with both the general and instrument-specific
 Phase 2 Web Pages ?

• YES

If you submitted OBs for standard stars, did you specify the magnitude
 and spectral type of all standard stars in the OBs ?

• N/A

Have you included OBs for any calibrations that you need but which are
 not part of the Calibration Plan ?

• N/A

If you are observing Moving Targets, have you attached suitable ephemeris
 files to your OBs?

• N/A

If you have preferences which OBs should be executed first, did you make
 use of the User Priority field in the OBs ?

• N/A

If this is a run that requires coordinated observations with other facilities,
 did you give proper instructions in the Time-Critical Aspects Section ?

• N/A

If you submitted OBs for standard stars, did you use the provided StandardStar
 templates ?

• N/A

If you are using a specific offset pattern or position angle, did you
 check carefully the definition in the manual ?

• N/A

Did you enter the magnitude of the brightest star in the field-of-view
 in the 'Instrument Comments' field of each OB ?

• YES

If you use the MoveToPixel acquisition, have you given clear instructions
 on the FC and in the OB comment section as to how the field should be centered ?

• N/A