Li, Ning Wang, Na Liu, Zhiyong Yang, Lei
Published in
Publications of the Astronomical Society of the Pacific
Radio astronomical observations put stringent requirements on the tracking and pointing accuracy of radio telescope antennas. High inertia, low stiffness, underdamped, and multi-resonant frequencies of a large aperture radio telescope’s antenna make the high-accuracy control difficult. It is not easy to satisfy control performance using only conven...
Wong, Alison P. Norris, Barnaby R. M. Deo, Vincent Tuthill, Peter G. Scalzo, Richard Sweeney, David Ahn, Kyohoon Lozi, Julien Vievard, Sébastien Guyon, Olivier
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Published in
Publications of the Astronomical Society of the Pacific
The pyramid wave front sensor (PyWFS) has become increasingly popular to use in adaptive optics (AO) systems due to its high sensitivity. The main drawback of the PyWFS is that it is inherently nonlinear, which means that classic linear wave front reconstruction techniques face a significant reduction in performance at high wave front errors, parti...
Krantz, Harrison Pearce, Eric C. Block, Adam
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Publications of the Astronomical Society of the Pacific
Wei, Xiya Quintero Noda, Carlos Zhang, Lanqiang Rao, Changhui
Published in
Publications of the Astronomical Society of the Pacific
Observations of the Sun provide unique insights into its structure, evolution, and activity, with significant implications for space weather forecasting and solar energy technologies. Ground-based telescopes offer cost-effective and flexible solutions for high-resolution solar observations, but image quality can be affected by atmospheric turbulenc...
Tonry, John L.
Published in
Publications of the Astronomical Society of the Pacific
The Asteroid Terrestrial-impact Last Alert System (ATLAS) observes the visible sky every night in search of dangerous asteroids. With four (soon five) sites ATLAS is facing new challenges for scheduling observations and linking detections to identify moving asteroids. Flexibility in coping with diverse observation sites and times of detections that...
Gialluca, Megan T. Robinson, Tyler D. Rugheimer, Sarah Wunderlich, Fabian
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Publications of the Astronomical Society of the Pacific
Anderson, L. D. Liu, B. Balser, Dana. S. Bania, T. M. Haffner, L. M. Linville, Dylan J. Luisi, Matteo Wenger, Trey V.
Published in
Publications of the Astronomical Society of the Pacific
The ideal spectral averaging method depends on one’s science goals and the available information about one’s data. Including low-quality data in the average can decrease the signal-to-noise ratio (S/N), which may necessitate an optimization method or a consideration of different weighting schemes. Here, we explore a variety of spectral averaging me...
Wu, Qinyu Ling, Zhixing Zhang, Chen Zhang, Shuang-Nan Yuan, Weimin
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Publications of the Astronomical Society of the Pacific
In recent years, tremendous progress has been made on scientific Complementary Metal Oxide Semiconductor (sCMOS) sensors, making them a promising device for future space X-ray missions. We have customized a large-format sCMOS sensor, G1516BI, dedicated for X-ray applications. In this work, a 200 nm thick aluminum layer is successfully sputtered on ...
Conod, Uriel Jackson, Kate Turri, Paolo Chapman, Scott Lardière, Olivier Lamb, Masen Correia, Carlos Sivo, Gaetano Sivanandam, Suresh Véran, Jean-Pierre
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Published in
Publications of the Astronomical Society of the Pacific
The Gemini Infrared Multi-Object Spectrograph (GIRMOS) will be a near-infrared, multi-object, medium spectral resolution, integral field spectrograph (IFS) for Gemini North Telescope, designed to operate behind the future Gemini North Adaptive Optics system (GNAO). In addition to a first ground layer Adaptive Optics (AO) correction in closed loop c...
Qiao-Yang, Hao Shen-Wei, Zhou Hui-Gen, Liu
Published in
Publications of the Astronomical Society of the Pacific
Terrestrial planets in the habitable zone (hereafter HZ) around nearby stars are of great interest and provide a good sample to characterize their habitability. In this paper, we collect a nearby star catalog within 20 pc according to the Gaia Catalog of Nearby Stars, complete the physical parameters of the stars, and select stars that are not brow...
