The assembly of laboratory spectrographs from individual components is a valuable exercise in an undergraduate setting. We describe several different spectrograph configurations that we have implemented with electronic panoramic detectors and present the data acquired with each of them, concentrating on the detection and measurement of Doppler shifts of absorption features in the spectra of bright celestial objects.
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IRAF is distributed by the National Optical Astronomy Observatories, ⟨iraf.noao.edu/⟩. For the data reduction referred to in Sec. III, the key procedures used from IRAF’s noao package were imred.ccdred.ccdproc for initial processing of the raw CCD images and their headers, imred.kpnocoude.do3fiber for extraction of one-dimensional spectra from the images, and rv.fxcor for the cross-correlations yielding radial velocities.
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.© 2011 American Association of Physics Teachers.
2011
American Association of Physics Teachers
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