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A Graphical User Interface for NIRC2 Asteroid Data Reduction PowerPoint PPT Presentation


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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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A Graphical User Interface for NIRC2 Asteroid Data Reduction

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A graphical user interface for nirc2 asteroid data reduction

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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