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Measurement of focus and off-axis anisoplanatism using a sodium resonance beacon and binary stars
- Source :
- Adaptive Optics in Astronomy.
- Publication Year :
- 1994
- Publisher :
- SPIE, 1994.
-
Abstract
- We have obtained the first measurements with a sodium laser beacon of focus anisoplanatism over large aperture, at the Multiple Mirror Telescope. In complementary studies, the atmospheric turbulence at the high altitude and on the large scale responsible for the measured focus anisoplanatism was explored by observations of binary stars of different separations. We confirm the predictions of Kolmogorov theory, and derive an effective height for the turbulence of 5050 m above the telescope. These results confirm that the sodium laser guide star planned for use with the 6.5 m telescope conversion of the MMT in 1996 will allow diffraction limited infrared observations in the H and K bands.© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
- Subjects :
- Physics
Diffraction
Turbulence
business.industry
Astrophysics::Instrumentation and Methods for Astrophysics
Astronomy
Astrophysics::Cosmology and Extragalactic Astrophysics
Laser
law.invention
Telescope
Laser guide star
Optics
law
K band
Binary star
Astrophysics::Solar and Stellar Astrophysics
Astrophysics::Earth and Planetary Astrophysics
Focus (optics)
business
Astrophysics::Galaxy Astrophysics
Subjects
Details
- ISSN :
- 0277786X
- Database :
- OpenAIRE
- Journal :
- Adaptive Optics in Astronomy
- Accession number :
- edsair.doi...........b3a500dfd10e539c922349f53240d645