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Next: Non-dispersive spectroscopy Up: INSTRUMENTATION Previous: Dispersing elements

Operational items

Choice of slit width, grating (science, seeing).

How to put object in slit. Imaging the slit. Slit viewing cameras.

Calibration: wavelength, detector, etc.

Show examples of typical spectra: line lamps, flat fields, stellar spectra, galaxy spectra. Night sky emission.

Aberrations/distortions: line curvature, S-distortion, flexure.



Rene Walterbos 2003-04-14