scholarly journals CHARA array adaptive optics: complex operational software and performance

2020 ◽  
Author(s):  
Narsireddy Anugu ◽  
Theo ten Brummelaar ◽  
Nils H. Turner ◽  
Matthew D. Anderson ◽  
Jean Baptiste Le Bouquin ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Chara Array ◽  
And Performance

scholarly journals Final design and on-sky testing of the iLocater SX acquisition camera: broad-band single-mode fibre coupling

2020 ◽  
Vol 501 (2) ◽  
pp. 2250-2267
Author(s):  
J Crass ◽  
A Bechter ◽  
B Sands ◽  
D King ◽  
R Ketterer ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Near Infrared ◽  
Broad Band ◽  
Single Mode ◽  
Injection System ◽  
Single Mode Fibre ◽  
Astronomical Instruments ◽  
Final Design ◽  
Camera Design ◽  
And Performance

ABSTRACT Enabling efficient injection of light into single-mode fibres (SMFs) is a key requirement in realizing diffraction-limited astronomical spectroscopy on ground-based telescopes. SMF-fed spectrographs, facilitated by the use of adaptive optics (AO), offer distinct advantages over comparable seeing-limited designs, including higher spectral resolution within a compact and stable instrument volume, and a telescope independent spectrograph design. iLocater is an extremely precise radial velocity (EPRV) spectrograph being built for the Large Binocular Telescope (LBT). We have designed and built the front-end fibre injection system, or acquisition camera, for the SX (left) primary mirror of the LBT. The instrument was installed in 2019 and underwent on-sky commissioning and performance assessment. In this paper, we present the instrument requirements, acquisition camera design, as well as results from first-light measurements. Broad-band SMF coupling in excess of 35 per cent (absolute) in the near-infrared (0.97–1.31 ${\mu {\rm m}}$) was achieved across a range of target magnitudes, spectral types, and observing conditions. Successful demonstration of on-sky performance represents both a major milestone in the development of iLocater and in making efficient ground-based SMF-fed astronomical instruments a reality.

scholarly journals VEGA: Visible spEctroGraph and polArimeter for the CHARA array: principle and performance

2009 ◽  
Vol 508 (2) ◽  
pp. 1073-1083 ◽  
Author(s):  
D. Mourard ◽  
J. M. Clausse ◽  
A. Marcotto ◽  
K. Perraut ◽  
I. Tallon-Bosc ◽  
...  
Keyword(s):  
Chara Array ◽  
And Performance

scholarly journals Palomar adaptive optics project: status and performance

2000 ◽  
Author(s):  
Mitchell Troy ◽  
Richard G. Dekany ◽  
Gary L. Brack ◽  
Ben R. Oppenheimer ◽  
Eric E. Bloemhof ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
And Performance

The CHARA array adaptive optics program

2018 ◽  
Author(s):  
Theo A. ten Brummelaar ◽  
Judit Sturmann ◽  
Laszlo Sturmann ◽  
Matthew D. Anderson ◽  
Nils H. Turner ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Chara Array

Design and performance of the tip-tilt subsystem for the Keck II telescope adaptive optics system

1998 ◽  
Author(s):  
Kenneth Avicola ◽  
James A. Watson ◽  
Barton V. Beeman ◽  
Thomas C. Kuklo ◽  
John R. Taylor
Keyword(s):  
Adaptive Optics ◽  
And Performance ◽  
Adaptive Optics System

scholarly journals CHARA array adaptive optics II: non-common-path correction and downstream optics

2014 ◽  
Author(s):  
Theo ten Brummelaar ◽  
Xiao Che ◽  
Harold McAlister ◽  
Michael Ireland ◽  
John Monnier ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Common Path ◽  
Chara Array

Infrared adaptive optics system of the 2.16-m telescope and its wavefront detecting error and performance analysis

1996 ◽  
Author(s):  
Wenhan Jiang ◽  
Mingquan Li ◽  
Guomao Tang ◽  
Changhui Rao ◽  
Ning Ling ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Adaptive Optics ◽  
And Performance ◽  
Adaptive Optics System
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