Mysterious transients unmasked as the bright blue death throes of massive stars (2009)
Quimby, R. M., Kulkarni, S. R., Kasliwal, M. M., Gal-Yam, A., Arcavi, I., Sullivan, M., ...
Movies of the heavens, produced by modern synoptic imaging surveys, are revolutionizing the field of cosmic explosions in astronomy. Recent discoveries suggest entirely new pathways for the deaths of...
Diffraction-limited K-band imaging at the Multiple Mirror Telescope with adaptive optics (2007)
M. Lloyd-hart, D. Colucci, D. Wittman, B. Mcleod, A. Ghez, ...
Low spatial frequencies of atmospheric turbulence are specially troublesome to astronomers because the phase distortions they cause have large amplitude. We have begun experiments at the Multiple...
M. Lloyd-hart, B. Jacobsen, R. Angel, R. Dekany, B. Carter, ...
We have obtained the first measurements with a sodium laser beacon of focus anisoplanatism over large aperture, at the Multiple Mirror Telescope (MMT). Focus anisoplanatism sets the fundamental limit...
Diffraction-limited K-band imaging at the Multiple Mirror Telescope with adaptive optics (2007)
Lloyd-Hart Colucci, M. Lloyd-hart, D. Colucci, D. Wittman, B. Mcleod, A. Ghez, ...
Low spatial frequencies of atmospheric turbulence are specially troublesome to astronomers because the phase distortions they cause have large amplitude. We have begun experiments at the Multiple...
Progress in Diffraction-Limited Imaging at the Multiple Mirror Telescope with Adaptive Optics (2007)
M. Lloyd-hart, R. Dekany, D. Sandler, D. Wittman, R. Angel, D. Mccarthy
this paper were obtained using only the five mirrors highlighted in Fig. 1. With no aberration, the point spread function of this array appears as shown in Fig. 2, with a bright central peak...
Lloyd-Hart Jacobsen, M. Lloyd-hart, B. Jacobsen, R. Angel, R. Dekany, B. Carter, ...
We have obtained the first measurements with a sodium laser beacon of focus anisoplanatism over large aperture, at the Multiple Mirror Telescope (MMT). Focus anisoplanatism sets the fundamental limit...
Deep impact: observations from a worldwide Earth-based campaign (2005)
Meech, K.J., Ageorges, N., A'Hearn, M.F., Arpigny, C., Ates, A., Aycock, J., ...
On 4 July 2005, many observatories around the world and in space observed the collision of Deep Impact with comet 9P/Tempel 1 or its aftermath. This was an unprecedented coordinated observational...
Deep Impact: Observations from a Worldwide Earth-Based Campaign (2005)
Meech, K.J., Ageorges, N., Arpigny, C., Ates, A., Aycock, J., ...
On 4 July 2005, many observatories around the world and in space observed the collision of Deep Impact with comet 9P/Tempel 1 or its aftermath. This was an unprecedented coordinated observational...
Sparse matrix wavefront reconstruction: simulations and experiments (2004)
Shi, F., MacMartin, D., Troy, M., Brack, G., Burrus, R., Dekany, R.
Adaptive optics systems with Shack-Hartmann wavefront sensors require reconstruction of the atmospheric phase error from slope measurements, with every sensor in the array being used in the...
Adaptive Optics Reconstruction Utilizing Super-Sampled Deformable Mirror Influence Functions (2004)
Redding, D., Basinger, S., Brack, G., Dekany, R., Oppenheimer, B.
This paper describes adaptive optics control laws that are now being implemented on the Palomar Mountain Hale telescope. This system uses a Shack-Hartman sensor observing natural guide stars to drive...
Palomar Adaptive Optics Project: Status and Performance (2004)
Troy, M., Dekany, R., Brack, G., Shi, F., Oppenheimer, B., Trinh, T., ...
We describe the current status of the Palomar 200 inch adaptive optics system, which in December of 1998 achieved its first high order (241 actuators) lock on a natural guide star.
Solar System Science with Subarcsecond Slit Spectroscopy (2004)
Dekany, R., Banfield, D., Brown, M., Bouchez, A., Hayward, T., Brandl, B., ...
Yang, E., Dekany, R., Padin, S.
This paper describes a proof-of-concept inchworm actuator designed to provide nanometer resolution, high stiffness, large output force, long travel range, and compactness for ultraprecision...
Yang, E., Dekany, R., Padin, S.
The goal of this research is to develop inchworm motor systems capable of simultaneously providing nanometer resolution, high stiffness, large output force, long travel range, and compactness for...
Truong, T. N., Troy, M., Brack, G., Trinh, T., Shi, F., Dekany, R.
This paper characterizes the performance of a single deformable mirror Shack-Hartmann natural guide star AO system based on the present-generation digital signal processors TMS320C6701 from Texas...
ADAPTIVE OPTICS EXPERIMENTS USING SODIUM LASER GUIDE STARS M. Lloyd-Hart (1995)
Angel Jacobsen Wittman, M. Lloyd-hart, B. Jacobsen, D. Wittman, R. Dekany, ...
The Multiple Mirror Telescope (MMT) has been used in experiments with sodium laser guide stars to sense and correct atmospheric image distortion. The major goal was to develop and test concepts for a...
ADAPTIVE OPTICS EXPERIMENTS USING SODIUM LASER GUIDE STARS M. Lloyd-Hart (1995)
Angel Jacobsen, D. Wittman, R. Dekany, D. Mccarthy, J. Beletic
The Multiple Mirror Telescope (MMT) has been used in experiments with sodium laser guide stars to sense and correct atmospheric image distortion. The major goal was to develop and test concepts for a...
Direct 75 Milliarcsecond Images from the Multiple Mirror Telescope with Adaptive Optics (1993)
M. Lloyd-hart, R. Dekany, B. Mcleod, D. Wittman, D. Colucci, ...
We report results from an adaptive optics system designed to provide imaging at the diffraction limit of resolution in the near infrared at the Multiple Mirror Telescope (MMT). For the present...