English
Related papers

Related papers: Camera update for GONG refurbishment: Development …

200 papers

In helioseismic studies, an observational parameter of primary concern is the P-angle, the angle along which lies the solar axis of rotation for a given image. For the six observing sites employed by The Global Oscillation Network Group…

Solar and Stellar Astrophysics · Physics 2023-04-17 Anna L. H. Hughes , Irene Gonzalez-Hernandez , Sean G. McManus , Kiran Jain , Sushanta C. Tripathy

Tracking and manipulating irregularly-shaped, previously unseen objects in dynamic environments is important for robotic applications in manufacturing, assembly, and logistics. Recently introduced Gaussian Splats efficiently model object…

Photosensor oculography (PS-OG) eye movement sensors offer desirable performance characteristics for integration within wireless head mounted devices (HMDs), including low power consumption and high sampling rates. To address the known…

Computer Vision and Pattern Recognition · Computer Science 2019-09-13 Henry K. Griffith , Dmytro Katrychuk , Oleg V. Komogortsev

We establish that global solar p-mode frequencies can be measured with sufficient precision on time scales as short as nine days to detect activity-related shifts. Using ten years of GONG data, we report that mode-mass and error-weighted…

Astrophysics · Physics 2009-02-10 S. C. Tripathy , F. Hill , K. Jain , J. W. Leibacher

Context: Solar sectoral Rossby waves have only recently been unambiguously identified in Helioseimsic and Magnetic Imager (HMI) and Michelson Doppler Imager (MDI) maps of flows near the solar surface. So far this has not been done with the…

Solar and Stellar Astrophysics · Physics 2020-03-18 Chris S. Hanson , Laurent Gizon , Zhi-Chao Liang

Binospec is a high-throughput, 370 to 1000 nm, imaging spectrograph that addresses two adjacent 8' by 15' fields of view. Binospec was commissioned in late 2017 at the f/5 focus of the 6.5m MMT and is now available to all MMT observers.…

Instrumentation and Methods for Astrophysics · Physics 2019-06-12 Jan Kansky , Igor Chilingarian , Daniel Fabricant , Anne Matthews , Sean Moran , Martin Paegert , J. Duane Gibson , Dallan Porter , John Roll

Omnidirectional images are increasingly used in robotics and vision due to their wide field of view. However, extending 3D Gaussian Splatting (3DGS) to panoramic camera models remains challenging, as existing formulations are designed for…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Zhe Yang , Guoqiang Zhao , Sheng Wu , Kai Luo , Kailun Yang

We report on the status of the Laser Interferometric Gravitational-Wave Observatory (LIGO) and the plans and progress towards Enhanced and Advanced LIGO. The initial LIGO detectors have finished a two year long data run during which a full…

General Relativity and Quantum Cosmology · Physics 2019-08-13 Joshua R Smith

We present the characteristics and the performance of the new CCD camera system, SNUCAM-II (Seoul National University CAMera system II) that was installed on the Lee Sang Gak Telescope (LSGT) at the Siding Spring Observatory in 2016.…

Instrumentation and Methods for Astrophysics · Physics 2017-07-28 Changsu Choi , Myungshin Im

Near-surface flows measured by the ring-diagram technique of local helioseismology show structures that persist over multiple rotations. We examine these phenomena using data from the {\em Global Oscillation Network Group} (GONG) and the…

Solar and Stellar Astrophysics · Physics 2015-08-19 R. Howe , R. W. Komm , D. Baker , L. Harra , L. van Driel-Gesztelyi , R. S. Bogart

This is the second of three papers describing an `absolute' calibration of the GONG magnetograph using an end-to-end simulation of its measurement process. In the first paper, we described the GONG instrument and our `end-to-end' simulation…

Solar and Stellar Astrophysics · Physics 2020-11-04 Joseph Plowman , Thomas Berger

Currently, an upgrade consisting of seven densely instrumented strings in the center of the volume of the IceCube detector with new digital optical modules (DOMs) is being built. On each string, DOMs will be regularly spaced with a vertical…

Instrumentation and Methods for Astrophysics · Physics 2023-08-14 Christoph Tönnis , Seowon Choi , Carsten Rott , Minyeong Seo , Jiwoong Lee

Classical approaches to grasp planning are deterministic, requiring perfect knowledge of an object's pose and geometry. In response, data-driven approaches have emerged that plan grasps entirely from sensory data. While these data-driven…

Robotics · Computer Science 2023-10-02 Albert H. Li , Preston Culbertson , Aaron D. Ames

Neuromorphic vision is a bio-inspired technology that has triggered a paradigm shift in the computer-vision community and is serving as a key-enabler for a multitude of applications. This technology has offered significant advantages…

Computer Vision and Pattern Recognition · Computer Science 2022-11-07 Yusra Alkendi , Rana Azzam , Abdulla Ayyad , Sajid Javed , Lakmal Seneviratne , Yahya Zweiri

In a previous study, Huang et al. (2023) used the Alfven Wave Solar atmosphere Model (AWSoM), one of the widely used solar wind models in the community, driven by ADAPT-GONG magnetograms to simulate the solar wind in the last solar cycle…

Solar and Stellar Astrophysics · Physics 2024-03-05 Zhenguang Huang , Gabor Toth , Nishtha Sachdeva , Bart van der Holst

Near-infrared Imager Spectrometer and Polarimeter (NISP) is a camera, an intermediate resolution spectrograph and an imaging polarimeter being developed for upcoming 2.5m telescope of Physical Research Laboratory at Mount Abu, India. NISP…

Long-term synoptic observations of the Sun are critical for advancing our understanding of Sun as an astrophysical object, understanding the solar irradiance and its role in solar-terrestrial climate, for developing predictive capabilities…

The pattern of migrating zonal flow bands associated with the solar cycle, known as the torsional oscillation, has been monitored with continuous global helioseismic observations by the Global Oscillations Network Group, together with those…

Solar and Stellar Astrophysics · Physics 2018-08-01 R. Howe , F. Hill , R. Komm , W. J. Chaplin , Y. Elsworth , G. R. Davies , J. Schou , M. J. Thompson

It has been shown over and over again that the parameters of solar p modes vary through the solar activity cycle: frequencies, amplitudes, lifetimes, energies. However, so far, the rates at which energy is supplied to the p modes have not…

Solar and Stellar Astrophysics · Physics 2020-10-28 René Kiefer , Anne-Marie Broomhall

Solar filament oscillations have been known for decades. Now thanks to the new capabilities of the new telescopes, these periodic motions are routinely observed. Oscillations in filaments show key aspects of their structure. A systematic…

Solar and Stellar Astrophysics · Physics 2022-10-26 Manuel Luna , Joan-René Merou Mestre , Frédéric Auchère