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A Graphical User Interface for NIRC2 Asteroid Data Reduction

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Z Knight W.M. Keck Observatories Research Supervisor: Al Conrad Home Institution: University of Hawai'i at Hilo. A Graphical User Interface for NIRC2 Asteroid Data Reduction. Akamai Big Island Internship Student Symposium July 29, 2005. The Problem: Lots of Data. Hundreds of asteroid images

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Z KnightW.M. Keck ObservatoriesResearch Supervisor: Al ConradHome Institution: University of Hawai'i at Hilo

A Graphical User Interface for NIRC2 Asteroid Data Reduction

Akamai Big Island Internship Student Symposium July 29, 2005

the problem lots of data
The Problem: Lots of Data
  • Hundreds of asteroid images
  • Data needs to be reduced
    • Remove Instrument Systematics
    • Remove Background
  • Data Reduction
    • Divide by Flat Field
    • Subtract Background
    • Remove hot pixels
    • Deconvolve
how to reduce data
How to Reduce Data

IDL : Interactive Data Language

  • Asteroid = readfits(‘n0002.fits’)
  • Sky = readfits(‘sky.fits’)
  • Asteroid = Asteroid - Sky
  • Surface, Asteroid
  • Surf = tvrd()
  • Write_jpeg, ‘surface.jpeg’, Surf
a faster way gui
A Faster Way: GUI
  • A Graphical User Interface (GUI) is easier to use than text commands.
  • NRX Asteroid is a program for reduction of NIRC2 images of asteroids
design considerations
Design Considerations
  • Automatic processing and modular functionality
  • Multi-platform support: Windows & UNIX
  • How to create a Background Sky frame?
  • What to do with Hot pixels?
  • Create FITS files of reduced data
  • Generate Web pages with surface plots
nrx asteroid
NRX Asteroid
  • Build a Background Sky
  • Divide by Flat
  • Subtract Sky
  • Smooth Hot Pixels
  • Save FITS
  • Shift and Add
  • Create surface plot
  • Create Web Page
  • Make a Movie
conclusions
Conclusions
  • Reducing data with text commands takes too long.
  • NRX Asteroid is a quick and easy way to reduce NIRC2 asteroid data and share it with others.
  • Thanks to:
    • Center for Adaptive Optics
    • Al Conrad
    • W.M. Keck Observatories
    • University of Hawai’i at Hilo
    • Acknowledgement: This project is supported by the National Science Foundation Science and Technology Center for Adaptive Optics, managed by the University of California at Santa Cruz under cooperative agreement No. AST - 9876783.
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