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I mage R eduction and A nalysis F acility through the examples. V SAR, Belgrade 2011. - The need for astrophysical software - Linux !. V SAR, Belgrade 2011. - IRAF: http://iraf.noao.edu/ - http://poincare.matf.bg.ac.rs/~donic/vezbe.html. Photometry & Spectroscopy

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slide1

Image Reduction and Analysis Facility

through the examples

V SAR, Belgrade 2011

slide2

- The need for astrophysical software

- Linux !

V SAR, Belgrade 2011

slide3

- IRAF: http://iraf.noao.edu/

- http://poincare.matf.bg.ac.rs/~donic/vezbe.html

  • Photometry & Spectroscopy
  • Reduction & Scientific analysis

V SAR, Belgrade 2011

slide4

The reduction of Echelle Spectra (just briefly)

  • Scientific analysis (spectral classification,…)

V SAR, Belgrade 2011

slide5

The Echelle Spectrum

V SAR, Belgrade 2011

slide6

The Echelle Spectrum

V SAR, Belgrade 2011

slide7

The reduction:

    • subtract the over-scan from all images
    • subtract the bias
    • trim the spectra
    • divide the spectra by the flat-field spectra
    • extract one-dimensional spectra
    • wavelength and flux calibrate the spectra

V SAR, Belgrade 2011