Since they first have been used in astronomy in the second half of the
seventies a lot of enthusiasm, tales, disillusion and mysteries spun
around the use and usefulness of optical fibers in astronomy.
Within almost 30 years fibers have been used with increasing success
to decouple astronomical instruments from the telescope and to split the
telescope focal plane into up to thousands of subchannels.
Both applications, the single fiber that is used to physically decouple
telescope and spectrograph as well as the socalled Integral Field Unit
that subdivides the information at the telescopes focal plane into subchannels
of fiber diamteres size are in the focus of my fiber optical work.
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