Error budget and expected performance of the VLT unit telescopes

Details Error budget and expected performance of the VLT unit telescopes Error budget and expected performance of the VLT unit telescopes

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2199..950d&link_type=abstract

Proc. SPIE Vol. 2199, p. 950-958, Advanced Technology Optical Telescopes V, Larry M. Stepp; Ed.

Computer Science

Performance

1

Scientific paper

The actual efficiency of ground-based telescope results from the combination of atmospheric turbulence and transmissivity, diameter of collecting area and signal throughput, the latter being affected by the transmissivity of the telescope and by all phase errors generated by the telescope and its close environment. The optical quality requirement for the VLT unit telescopes is based on a formalism which allows a global assessment of performance, under taking into account all effects previously mentioned. The potential advantages of the method, in terms of the user needs as well as of design and manufacturing constraints will be reviewed. The expected performance will be presented, critical error sources identified and the underlying error budget detailed.

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