n MNASSA : Monthly Notes of the Astronomical Society of South Africa - Amateur spectroscopy - spectra of ETA Carina




There are three things that can be done with light collected by telescopes:

  • produce images,
  • do some photometry, and
  • do some spectroscopy.
Amateur astronomers have in recent times started doing the first two, with remarkable success, and now more recently, spectroscopy. Using simple, low cost equipment they can produce the spectrum of any object that is accessible by the equipment that is being used. This has opened up a field of observation previously only accessible to professional astronomers using large telescopes. But like everything in life, the more precision one wants, the more expensive the equipment tends to become!


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