
Proceedings Paper
The LBT experience of adaptive secondary mirror operations for routine seeing- and diffraction-limited science operationsFormat | Member Price | Non-Member Price |
---|---|---|
$17.00 | $21.00 |
Paper Abstract
The Large Binocular Telescope (LBT) is unique in that it is currently the only large telescope (2 x 8.4m primary
mirrors) with permanently mounted adaptive secondary mirrors (ASMs). These ASMs have been used for regular
observing since early 2010 on the right side and since late 2011 on the left side. They are currently regularly
used for seeing-limited observing as well as for selective diffraction-limited observing and are required to be fully
operational every observing night. By comparison the other telescopes using ASMs, the Multi Mirrot Telescope
(MMT) and more recently Magellan, use fixed secondaries of seeing-limited observing and switch in the ASMs
for diffraction-limited observing.
We will discuss the night-to-night operational requirements for ASMs specifically for seeing-limited but also
for diffraction-limited observations based on the LBT experience. These will include preparation procedures for
observing (mirror flattening and resting as examples); hardware failure statistics and how to deal with them
such as for the actuators; observing protocols for; and current limitations of use due to the ASM technology such
as the minimum elevation limit (25 degrees) and the hysteresis of the gravity-vector induced astigmatism. We
will also discuss the impact of ASM maintenance and preparation
Paper Details
Date Published: 26 September 2013
PDF: 10 pages
Proc. SPIE 8860, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VI, 886014 (26 September 2013); doi: 10.1117/12.2034002
Published in SPIE Proceedings Vol. 8860:
UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VI
Howard A. MacEwen; James B. Breckinridge, Editor(s)
PDF: 10 pages
Proc. SPIE 8860, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VI, 886014 (26 September 2013); doi: 10.1117/12.2034002
Show Author Affiliations
J. C. Guerra, Large Binocular Telescope Observatory (United States)
G. Brusa, Steward Observatory (United States)
J. Christou, Large Binocular Telescope Observatory (United States)
D. Miller, Large Binocular Telescope Observatory (United States)
A. Ricardi, INAF - Osservatorio Astrofisico di Arcetri (Italy)
G. Brusa, Steward Observatory (United States)
J. Christou, Large Binocular Telescope Observatory (United States)
D. Miller, Large Binocular Telescope Observatory (United States)
A. Ricardi, INAF - Osservatorio Astrofisico di Arcetri (Italy)
M. Xompero, INAF - Osservatorio Astrofisico di Arcetri (Italy)
R. Briguglio, INAF - Osservatorio Astrofisico di Arcetri (Italy)
M. Wagner, Large Binocular Telescope Observatory (United States)
M. Lefebvre, Large Binocular Telescope Observatory (United States)
R. Sosa, Steward Observatory (United States)
R. Briguglio, INAF - Osservatorio Astrofisico di Arcetri (Italy)
M. Wagner, Large Binocular Telescope Observatory (United States)
M. Lefebvre, Large Binocular Telescope Observatory (United States)
R. Sosa, Steward Observatory (United States)
Published in SPIE Proceedings Vol. 8860:
UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VI
Howard A. MacEwen; James B. Breckinridge, Editor(s)
© SPIE. Terms of Use
