Preliminary experimental measurement of isoplanatic angle

Details Preliminary experimental measurement of isoplanatic angle Preliminary experimental measurement of isoplanatic angle

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pemi.rept.....m&link_type=abstract

Unknown

Computer Science

Performance

Angles (Geometry), Astronomy, Atmospheric Circulation, Performance Tests, Turbulence Meters, Night, Spatial Distribution, Stars, Transfer Functions

Scientific paper

Group 67 has designed and built an isoplanometer, an instrument which remotely measures the isoplanatic angle associated with atmospheric turbulence conditions. The isoplanatic angle is loosely defined as the angular field over which the spatial transfer function of the atmosphere can be assumed to be invariant. Verification of the instrument required nighttime testing using stellar sources to measure current atmospheric conditions. Preliminary results from a verification experiment and a brief description of the instrument are presented. Full instrument verification requires locating the instrument at a better astronomical site; therefore, the data should not be considered a valid characterization of the atmospheric conditions in Lexington, Mass.

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