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Point-spread function of the probe forming optics ($PSF_{optics} $) is reported for the first time in an uncorrected (without multipole correctors) scanning electron microscope (SEM). In an SEM, the electron probe information is lost as the…

Materials Science · Physics 2024-07-02 Surya Kamal , Richard K. Hailstone

In preparation for the Dark Energy Spectroscopic Instrument (DESI), a new top end was installed on the Mayall 4-meter telescope at Kitt Peak National Observatory. The refurbished telescope and the DESI instrument were successfully…

In a companion paper we have presented many products derived from the application of the spectral synthesis code STARLIGHT to datacubes from the CALIFA survey, including 2D maps of stellar population properties and 1D averages in the…

The SPEAR (or 'FIMS') instrumentation has been used to conduct the first large-scale spectral mapping of diffuse cosmic far ultraviolet (FUV, 900-1750 AA) emission, including important diagnostics of interstellar hot (10^4 K - 10^6 K) and…

UNIONS is an ongoing collaboration that will provide the largest deep photometric survey of the Northern sky in four optical bands to date. As part of this collaboration, CFIS is taking $r$-band data with an average seeing of 0.65 arcsec,…

We present the fourth data release (DR4) of the SkyMapper Southern Survey (SMSS), the last major step in our hemispheric survey with six optical filters: u, v, g, r, i, z. SMSS DR4 covers 26,000 sq.deg from over 400,000 images acquired by…

Cosmology and Nongalactic Astrophysics · Physics 2024-02-06 Christopher A. Onken , Christian Wolf , Michael S. Bessell , Seo-Won Chang , Lance C. Luvaul , John L. Tonry , Marc C. White , Gary S. Da Costa

As a label-free imaging technique, quantitative phase imaging (QPI) provides optical path length information of transparent specimens for various applications in biology, materials science, and engineering. Multispectral QPI measures…

Optics · Physics 2023-08-29 Che-Yung Shen , Jingxi Li , Deniz Mengu , Aydogan Ozcan

We present -- and make publicly available -- accurate and precise photometric redshifts in the ACS footprint from the COSMOS field for objects with $i_{\mathrm{AB}}\leq 23$. The redshifts are computed using a combination of narrow band…

The development of large-area homogeneous photo-detectors with sub-millimeter path lengths for direct Cherenkov light and for secondary-electrons opens the possibility of large time-of-flight systems for relativistic particles with…

Instrumentation and Detectors · Physics 2009-08-05 Jean-Francois Genat , Gary Varner , Fukun Tang , Henry Frisch

We present the first southern-hemisphere all-sky imager and radio-transient monitoring system implemented on two prototype stations of the low-frequency component of the Square Kilometre Array. Since its deployment the system has been used…

The Argus Optical Array is a synoptic survey observatory, currently in development, that will have a total collecting area equivalent to a 5-meter monolithic telescope and an all-sky field of view, multiplexed from 900 commercial…

Instrumentation and Methods for Astrophysics · Physics 2022-08-01 Hank Corbett , Alan Vasquez Soto , Lawrence Machia , Nathan Galliher , Ramses Gonzalez , Nicholas M. Law

The First Data Release (DR1) of the UKIRT Infrared Deep Sky Survey (UKIDSS) took place on 2006 July 21. UKIDSS is a set of five large near-infrared surveys, covering a complementary range of areas, depths, and Galactic latitudes. DR1 is the…

We present WSRT 1.38 GHz observations of the Hubble Deep Field (and flanking fields). 72 hours of data were combined to produce the WSRT's deepest image yet, achieving an r.m.s. noise level of 8 microJy per beam. We detect radio emission…

Astrophysics · Physics 2007-05-23 M. A. Garrett , G. de Bruyn , W. Baan , R. T. Schilizzi

We report on a search for persistent radio emission from the one-off Fast Radio Burst (FRB) 20190714A, as well as from two repeating FRBs, 20190711A and 20171019A, using the MeerKAT radio telescope. For FRB 20171019A we also conducted…

High Energy Astrophysical Phenomena · Physics 2022-08-10 James O. Chibueze , M. Caleb , L. Spitler , H. Ashkar , F. Schussler , B. W. Stappers , C. Venter , I. Heywood , A. M. S. Richards , D. R. A. Williams , M. Kramer , R. Beswick , M. C. Bezuidenhout , R. P. Breton , L. N. Driessen , F. Jankowski , E. F. Keane , M. Malenta , M. Mickaliger , V. Morello , H. Qiu , K. Rajwade , S. Sanidas , M. Surnis , T. W. Scragg , C. R. H. Walker , N. Wrigley , H. E. S. S. Collaboration , : , F. Aharonian , F. Ait Benkhali , E. O. Anguner , M. Backes , V. Baghmanyan , V. Barbosa Martins , R. Batzofin , Y. Becherini , D. Berge , M. Bottcher , C. Boisson , J. Bolmont , M. de Bony de Lavergne , M. Breuhaus , R. Brose , F. Brun , T. Bulik , F. Cangemi , S. Caroff , S. Casanova , J. Catalano , M. Cerruti , T. Chand , A. Chen , O. U. Chibueze , G. Cotter , P. Cristofari , J. Damascene Mbarubucyeye , J. Devin , A. Djannati Atai , A. Dmytriiev , K. Egberts , J. P. Ernenwein , A. Fiasson , G. Fichet de Clairfontaine , G. Fontaine , S. Funk , S. Gabici , S. Ghafourizadeh , G. Giavitto , D. Glawion , M. H. Grondin , M. Horbe , C. Hoischen , T. L. Holch , Zhiqiu Huang , M. Jamrozy , F. Jankowsky , I. Jung Richardt , E. Kasai , K. Katarzynski , U. Katz , B. Khelifi , W. Kluzniak , Nu. Komin , K. Kosack , D. Kostunin , A. Lemiere , J. P. Lenain , F. Leuschner , T. Lohse , A. Luashvili , I. Lypova , J. Mackey , D. Malyshev , V. Marandon , P. Marchegiani , A. Marcowith , G. Marti Devesa , R. Marx , A. Mitchell , R. Moderski , L. Mohrmann , E. Moulin , J. Muller , K. Nakashima , M. de Naurois , A. Nayerhoda , J. Niemiec , A. Priyana Noel , P. O'Brien , S. Ohm , L. Olivera Nieto , E. de Ona Wilhelmi , M. Ostrowski , S. Panny , R. D. Parsons , S. Pita , V. Poireau , D. A. Prokhorov , H. Prokoph , G. Puhlhofer , A. Quirrenbach , P. Reichherzer , A. Reimer , O. Reimer , G. Rowell , B. Rudak , E. Ruiz Velasco , V. Sahakian , S. Sailer , H. Salzmann , D. A. Sanchez , A. Santangelo , M. Sasaki , H. M. Schutte , U. Schwanke , J. N. S. Shapopi , A. Specovius , S. Spencer , R. Steenkamp , S. Steinmassl , T. Takahashi , T. Tanaka , C. Thorpe Morgan , N. Tsuji , C. van Eldik , J. Veh , J. Vink , S. J. Wagner , A. Wierzcholska , Yu Wun Wong , A. Yusafzai , M. Zacharias , D. Zargaryan , A. A. Zdziarski , A. Zech , S. J. Zhu , S. Zouari , N. Zywucka

We present here the design, architecture, and first data release for the Solar System Notification Alert Processing System (SNAPS). SNAPS is a Solar System broker that ingests alert data from all-sky surveys. At present, we ingest data from…

Earth and Planetary Astrophysics · Physics 2023-02-22 David E. Trilling , Michael Gowanlock , Daniel Kramer , Andrew McNeill , Brian Donnelly , Nat Butler , John Kececioglu

Attosecond transient absorption spectroscopy (ATAS) is used to observe photoexcited dynamics with outstanding time resolution. The main experimental challenge of this technique is that high-harmonic generation sources show significant…

We are performing a transient, microsecond timescale radio sky survey, called "Astropulse," using the Arecibo telescope. Astropulse searches for brief (0.4 {\mu}s to 204.8 {\mu}s), wideband (relative to its 2.5 MHz bandwidth) radio pulses…

Instrumentation and Methods for Astrophysics · Physics 2015-06-12 J. Von Korff , P. Demorest , E. Heien , E. Korpela , D. Werthimer , J. Cobb , M. Lebofsky , D. Anderson , B. Bankay , A. Siemion

The Variables and Slow Transients (VAST) Survey on the Australian SKA Pathfinder (ASKAP) is designed to systematically explore the dynamic radio sky, detecting sources that vary on timescales from minutes to several years. In this paper, we…

LOFAR is the only radio telescope that is presently capable of high-sensitivity, high-resolution (<1 mJy/b and <15") observations at ultra-low frequencies (<100 MHz). To utilise these capabilities, the LOFAR Surveys Key Science Project is…

Soft X-ray angle resolved photoemission spectroscopy (SX-ARPES) is one of the most powerful spectroscopic techniques to visualize the three-dimensional bulk electronic structure in reciprocal lattice space. Compared with ARPES employing…

Strongly Correlated Electrons · Physics 2026-03-05 Kohei Yamagami , Yuichi Yokoyama , Yuta Sumiya , Hayaru Shouno , Tetsuro Nakamura , Masaichiro Mizumaki