This experiment included the ultraviolet spectrograph package carried by the IUE, consisting of two physically distinct echelle-spectrograph/camera units capable of astronomical observations. The IUE scientific instrument contains two spectrographs which function independently. Each spectrograph has a prime and a redundant camera. The Long-Wavelength Prime (LWP) and Short-Wavelength Prime (SWP) cameras are the standard detectors.
urn:nasa:pds:context:instrument:swp.iue
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