Telescopio Nazionale Galileo (2007)
The Effective Layer, Roberto Ragazzoni, Enrico Marchetti, Guido Brusa, Francesca Rampazzi
Due to the finite height of the mesospheric sodium laser guide star, it is shown that the measurement of absolute tilt done with the multi-- colour laser star technique is affected by an uncertainty...
Hinz, Philip M., Heinze, A. N., Sivanandam, Suresh, Miller, Douglas L., Kenworthy, Matthew A., Brusa, Guido, ...
Vega may have a massive companion in a wide orbit, as evidenced by structure in its cold dust debris. We have tested this hypothesis by direct imaging with adaptive optics in the M band. The...
Biller, Beth A., Close, Laird M., Li, Aigen, Marengo, Massimo, Bieging, John H., Hinz, Phil M., ...
We imaged the symbiotic star CH Cyg and two PSF calibration stars using the unique 6.5m MMT deformable secondary adaptive optics system. Our high-resolution (FWHM=0.3"), very high Strehl (98%+-2%)...
Mid-Infrared Imaging of the Post-AGB Star AC Herculis with the MMT Adaptive Optics System (2003)
Close, Laird M., Biller, Beth, Hoffmann, William F., Hinz, Phil M., Bieging, John H., Wildi, Francois, ...
We utilized the MMT's unique deformable secondary adaptive optics system to produce high-resolution (FWHM=0.3"), very high Strehl mid-infrared (9.8, 11.7 & 18 micron) images of the post-AGB star AC...
Close, Laird M., Wildi, Francois, Lloyd-Hart, Michael, Brusa, Guido, Fisher, Don, Miller, Doug, ...
We present the first scientific images obtained with a deformable secondary mirror adaptive optics system. We utilized the 6.5m MMT AO system to produce high-resolution (FWHM=0.07'') near infrared...
Dynamically refocused Rayleigh laser beacons for atmospheric tomography (2001)
Michael Lloyd-hart, Michael Lloyd-hart, James Georges, James Georges, Roger Angel, Roger Angel, ...
We report initial results from a prototype system to generate multiple Rayleigh laser guide stars for adaptive optics from a single pulsed laser at 354 nm wavelength. A 3.2 mW laser pulsed at 630 Hz...
Static and Dynamic Responses of an Ultra-Thin, Adaptive Secondary Mirror (1999)
Ciro Del Vecchio, Guido Brusa, Daniele Gallieni, Michael Lloyd-hart, Warren B. Davison
We present the results of a complete set of static and dynamic runs of the FEA model of the MMT adaptive secondary. The thin mirror is the most delicate component of the MMT adaptive secondary unit,...