Mark-3 interferometer

Details Mark-3 interferometer Mark-3 interferometer

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mit..repts....s&link_type=abstract

Progress Report, 1 Apr. 1988 - 30 Jun. 1989 Massachusetts Inst. of Tech., Cambridge. Research Lab. of Electronics.

Astronomy and Astrophysics

Astronomy

Infrared Radiation, Interferometers, Optical Measuring Instruments, Stellar Color, Accuracy, Astronomy, Atmospheric Circulation, Atmospheric Turbulence, Diameters, Position Errors, Sensitivity

Scientific paper

The development and testing of the Mark-3 stellar interferometer is considered. The instrument employs a two color technique to reduce position errors due to atmospheric turbulence, and can operate with four possible baseline configurations ranging from 9 to 20 meters. Despite its function as a technology development platform, it is also capable of stellar separation and stellar diameter measurements with nearly unprecedented accuracy and sensitivity. The major contributions are the development of a dispersed-fringe group delay measurement system which can boost the system sensitivity by several stellar magnitudes, and the initial stages of development of an infrared capability, which should increase the future scientific interest of the facility.

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