18 November 2004AstroGrid Solar Movie Maker VOTechKickoff

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VOTech Kick-off Meeting
AstroGrid Solar Movie Maker Deploying SolarSoft
IDL tools with CEA Elizabeth Auden Silvia
Dalla 18 November 2004
(Animated GIF of solar movie)
18 November 2004 AstroGrid Solar Movie Maker
VOTech Kick-off
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AstroGrid Solar Movie Maker

• Accessing TRACE data and SolarSoft data
  reduction
• Generating solar MPEGs
• Deploying IDL as a CEA grid tool
• Example Creating a solar movie with AstroGrid

18 November 2004 AstroGrid Solar Movie Maker
VOTech Kick-off
3
TRACE Data
TRACE files are presented to the movie maker tool
as a series of URLs inside a VOTable. CEA
downloads the URLs as temporary files local to
the movie maker tool.
18 November 2004 AstroGrid Solar Movie Maker
VOTech Kick-off
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SolarSoft TRACE Analysis
18 November 2004 AstroGrid Solar Movie Maker
VOTech Kick-off
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MPEG Generation

• One MPEG per hourly TRACE file is generated with
  IDL
• Mpeg_open
• Mpeg_put
• Mpeg_save
• Mpeg_close
• MPEG generation is tightly controlled (by
  Elizabeth!), so rate, image size, and encoding
  type are known to be identical.
• MPEGs from multiple hourly TRACE files are put
  together using simple Unix concatenation facility.

18 November 2004 AstroGrid Solar Movie Maker
VOTech Kick-off
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CallMakeMPEGFitsImages tool

• So, whats under the hood?
• Input output filename, name(s) of 1 or more
  hourly TRACE files
• Confirm that all input files are valid hourly
  TRACE files
• Loop through TRACE files
• a. Reduce data with SolarSoft TRACE tools
• b. Generate MPEG with IDL MPEG encoding
• 4. Concatenate all hourly MPEGs into one movie
• 5. Output one MPEG solar movie written to MySpace

18 November 2004 AstroGrid Solar Movie Maker
VOTech Kick-off
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CEA Interface Unix shell script

• IDL what we didnt use
• Ion / IonScript - required extra licensing
• RPCs - vetoed by MSSL system administrator
• IDL VM - code restrictions, obnoxious splash
  screen
• Interactive routines no dialog boxes or other
  GUIs
• MPEG generation is tightly controlled (by
  Elizabeth!), so rate, image size, and encoding
  type are known to be identical.
• MPEGs from multiple hourly TRACE files are put
  together using simple Unix concatenation
  facility.
• Solution shell script to generate IDL SolarSoft
  session, execute IDL data reduction and MPEG
  encoding, and concatenate MPEGs.

18 November 2004 AstroGrid Solar Movie Maker
VOTech Kick-off
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Configuration of Tool with CEA

• Deploy local installation of CEA with maven
• Configure a work.dir directory containing tool
  files
• Fill in AstroGrid CEA registry template
• Provide tool name and other curation information
• Declare AstroGrid AuthorityID
• Locate MySpace (remote or local)
• Specify input(s) and output(s) data / file
  type, number, syntax, etc
• Use maven to finish setup, configuration, and
  AstroGrid update
• If all goes according to plan, tool name appears
  in AstroGrid portal workflow dropdown menu.

18 November 2004 AstroGrid Solar Movie Maker
VOTech Kick-off
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Example TRACE data search
(screen shot of AG portal TRACE data search)
18 November 2004 AstroGrid Solar Movie Maker
VOTech Kick-off
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Example Solar Movie Workflow
(screen shot of AG portal movie maker workflow)
18 November 2004 AstroGrid Solar Movie Maker
VOTech Kick-off
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Example Movie Maker result
(screen shot of AG portal showing movie in
MySpace explorer play movie)
18 November 2004 AstroGrid Solar Movie Maker
VOTech Kick-off
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Future Work

• Movie Maker tool enhancement
• Accommodate data from TRACE, SOHO-CDS, SOHO-EIT,
  Yohkoh, etc.
• Include derotation algorithm to account for Suns
  rotation during movie
• Allow overlay of 2 or more images displaying
  different wavelengths / magnetic observation in
  each frame.
• Use coordinate and pointing information to ensure
  spatial alignment of images
• Development of further tools
• Collaboration between Silvia (IDL code) and
  Elizabeth (CEA configuration) on new solar
  AstroGrid tools
• Possible new tools a simple movie maker, data
  reduction tool, multiple wavelength / magnetic /
  white light overlay image tool

18 November 2004 AstroGrid Solar Movie Maker
VOTech Kick-off