Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...450..369c&link_type=abstract
Astrophysical Journal v.450, p.369
Astronomy and Astrophysics
Astronomy
13
Astrometry, Atmospheric Effects, Infrared: Stars, Stars: Binaries: Visual, Stars: Individual Alphanumeric: Ads 9731, Techniques: Image Processing
Scientific paper
In this report we present Rayleigh beacon adaptive optics imaging of the quadruple star system ADS 9731. These observations were made at the Starfire Optical Range near Albuquerque, New Mexico, using a fully atmospherically compensated adaptive optics system. Data were obtained in wave bands centered on 0.85 microns (I-band), 1.25 microns (J-band), and 1.65 microns (H-band). Measurements of the astrometry of the system are presented. These observations permitted measurements of the point-spread function variations across the field of view. We note that minimal, if any, anisoplanatism is seen at the J and H bands, but significant anisoplanatism is measured in the I band. The atmospheric behavior is commensurate with numerical models which predict a larger field of view when using a low-altitude Rayleigh beacon than when using a natural beacon or a sodium beacon.
Bonaccini Domenico
Christou Julian C.
Ellerbroek Brent
Fugate Robert Q.
Stanga Ruggero
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