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Spectrum of ligh star

  1. Jul 25, 2011 #1
    i and my friend want to have spectrum of star.
    i need star light with high intensity to diffract this.
    unfortunately, we don't know how we can have a intense light?

    do you know how we can do this?
    or
    in general, how can we have spectrum of light star?
     
  2. jcsd
  3. Jul 25, 2011 #2
    The most convenient star for this purpose is our Sun.
    http://en.wikipedia.org/wiki/Fraunhofer_lines
    http://pandasthumb.org/archives/2010/07/fraunhofer-line.html

    ( Prompt Blinding Danger: Do not look at Sun directly or through optics *unless* you have interposed an appropriate 'eclipse-grade' filter. Do not repeat mistake with other eye... ;-)

    Beyond that, you could try Sirius, but you may need a long exposure to coax a spectrum from your prism or diffraction grating, and you are unlikely to see 'lines'...
     
  4. Jul 26, 2011 #3

    Drakkith

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    Staff: Mentor

    The best method I THINK would be to project the light through a prism or diffraction grating and onto a CCD camera or something similar. That way you can take a long exposure of the accumulation of light and possibly see it in the picture.
     
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