Town Hall Meeting

1
What is SHARE?

• SHARE Study of Hubble Archive Reprocessing
  Enhancements
• Chartered by Rodger Doxsey
• Study participants include
• Jerry Kriss (chair) HST/STIS NGST Howard
  Bushouse ESS/SSG Mark Dickinson HST/NICMOS Me
  gan Donahue ACDSD ( FASST Chair) Dorothy
  Fraquelli ACDSD Mauro Giavalisco HST/WFC3 Tony
  Keyes HST/COS Anton Koekemoer HST/WFPC2 Gerh
  ard Meurer JHU/ACS
• Paolo Padovani ACDSD Bill Sparks HST/ACS D
  aryl Swade ESS

2
The SHARE Charter

• The Deployment of On-The-Fly Reprocessing (OTFR)
  enables potential new services utilizing the HST
  archive. The SHARE study is chartered to
• Evaluate and recommend general capabilities,
  services and enhancements to these systems.
• Evaluate and recommend specific new scientific
  services and enhancements to these systems.
  These should be augmentations with clear and
  substantial added benefit for the research
  community.
• Provide a rough road map or order for the
  implementation of the recommendations made in
  item 1 and 2.
• Recommend a process for encouraging astronomical
  community participation in the development of
  such enhancements.
• Recommend a process for regularly assessing and
  prioritizing enhancements of this type in the
  future.

3
Ideas for Reprocessing Enhancements

• Improvements to the accuracy of the World
  Coordinate System in the headers of calibrated
  data products.
• Combining images to produce a wide-field mosaic
  or deep stacked image.
• Identifying and classifying objects in a single
  image or a combined set of images.
• Producing a catalog of objects in a single image
  or a combined set of images.
• Determining photometric redshifts for objects in
  a region of sky which is imaged in a number of
  different bands.
• Combining spectra from several different
  observations or from dithered STIS observations.
• Using the time history of data and calibrations
  to enhance the reprocessing.
• Providing better quality information for data
  sets in the archive.
• Allow users to specify customized parameters to
  be used when running OTFR to tailor the pipeline
  calibration to their scientific needs.
• Creating "data cubes" from dithered long-slit
  spectroscopic observations.

4
Recommendations for Implementation

• Assess the resources required for each idea
• Evaluate the likely timescales for implementation
• Given the required resources and timescales,
  reassess our priorities and recommend a
  development road map

5
Encouraging Community Participation

• Advertise and discuss ideas for reprocessing
  enhancements at ADASS meetings
• Encourage contributed software/data products
  through a special category of archival proposals

6
Assessing and Prioritizing Future Enhancements

• Report updates on progress in Archive Newsletters
• Make regular presentations to the STUC as
  enhancements proceed
• Advertise current work at ADASS conferences and
  AAS meetings
• Hold discussions at yearly ADASS meetings