Photometric studies using the Starfire Optical Range adaptive optics system

Details Photometric studies using the Starfire Optical Range adaptive optics system Photometric studies using the Starfire Optical Range adaptive optics system

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3353..447p&link_type=abstract

Proc. SPIE Vol. 3353, p. 447-454, Adaptive Optical System Technologies, Domenico Bonaccini; Robert K. Tyson; Eds.

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Scientific paper

Observations using the Starfire Optical Range (SOR) 1.5m telescope, located near Albuquerque, NM, were made during two separate observing runs, one in 1995 and the other in 1996. Image data was collected using a cooled 2K by 2K user provided CCD camera system. During the first observing sessions a standard SOR direct imaging configuration was used where a CCD imager. For the second observing run the configuration was modified to use a mirror with a small on- axis hole that allowed all the light in the central region to be used by the AO system while the remainder of the field was directed to the CCD. The data from these observations were used to investigate a number of issues related to AO observing including: (i) the effect of scattered laser light on image quality; (ii) the photometric accuracy across an AO corrected field; (iii) the PSF variations across an AO corrected field; (iv) the limits to observation of close companions using a mirror with a hole as a coronograph. The result of these observing runs are presented along with representative images obtained using no correction, partial correction, using natural guide stars, and Rayleigh laser beacon configuration.

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