Infrared Astronomy: in the Heat of the Night
The 1999 Ellery Lecture
J.W.V. Storey, PASA, 17 (3), 270.
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Since the first humans looked up at the stars and, in so doing, unwittingly
became the first astronomers, our perception of the Universe has been coloured
by our own biological limitations. With eyes that respond only to a very
narrow range of wavelengths (roughly 400 - 700 nm), we have striven first to
see fainter and fainter objects with ever-increasing clarity. Only
in the past few years have we been able to obtain images in other parts of
the spectrum that ``look'' as they would if our eyes worked at those
wavelengths. First came aperture synthesis radio astronomy, then infrared
imaging techniques using million-pixel detectors and then, more recently,
high-resolution X-ray images. Our eyes have now had their wavelength response
extended to cover most of the electromagnetic spectrum. For the first time in
our evolution as a species can we ``look'' at the Universe without any
predetermined wavelength bias, and see it as it really is.
Australia's contribution to this new view of the Universe has been
substantial. As we enter the third century of infrared astronomy, we can only
wonder what new discoveries are in store, and what changes they will bring to
our perception of the world.
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© Copyright Astronomical Society of Australia 1997