Scientific objectives of the VLT Interferometer

Details Scientific objectives of the VLT Interferometer Scientific objectives of the VLT Interferometer

Jun 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001msngr.104....5p&link_type=abstract

The Messenger, No. 104. p. 5 - 7 (June 2001)

Physics

Optics

5

Vlt, Interferometers

Scientific paper

Astronomers have long sought to improve the sensitivity and spatial resolution of their observations in order to see as far back in time and as sharply as possible. As the photon-collecting power scales as the telescope diameter D2 and spatial resolution as D 1, the solution of the problem has always been in the form of ever larger collecting-aperture telescopes. Unfortunately, although this solution did indeed increase dramatically the sensitivity of astronomical observations, it still was far from ideal in terms of spatial resolution owing to the negative effects of the earth's atmosphere. On the ground, the improvements were mainly due to finding the proper location where the seeing was best (California, Hawaii and Chile) and, more recently, to the technique of adaptive optics as shown schematically in Figure 1.

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