Results 1 to 10 of about 81,818 (284)

A model for suppressing stray light in astronomical images based on deep learning [PDF]

Scientific Reports
Wide-Field Small Aperture Telescopes (WFSAT) are widely used for surveilling space objects. Due to their wide-field of view (FOV) characteristics, these telescopes can cover a large areas of the sky at once, improving observation efficiency.
Mo Chen, Yan Zhao, Wenbo Yang, Jiahui Qian, Shanwei Li, Yulong Zheng, Jiaqian Ma, Shigang Wang, Jian Chen, Jian Wei   +9 more
doaj   +2 more sources

A purely reflective large wide-field telescope [PDF]

Bulletin of the Crimean Astrophysical Observatory, 2008
Two versions of a fast, purely reflective Paul-Baker type telescope are discussed, each with an 8.4-m aperture, 3 deg diameter flat field and f/1.25 focal ratio. The first version is based on a common, even asphere type of surface with zero conic constant.
V. Yu. Terebizh
openalex   +4 more sources

The Wide Field X–ray Telescope [PDF]

Proceedings of The Extreme sky: Sampling the Universe above 10 keV — PoS(extremesky2009), 2010
P. Tozzi
openalex   +2 more sources

ULTRASAT: A Wide-field Time-domain UV Space Telescope [PDF]

The Astrophysical Journal
Abstract The Ultraviolet Transient Astronomy Satellite (ULTRASAT) is scheduled to be launched to geostationary orbit in 2027. It will carry a telescope with an unprecedentedly large field of view (204 deg2) and near-ultraviolet (NUV; 230–290 nm) sensitivity (22.5 mag, 5σ, at 900 s).
Yossi Shvartzvald, Eli Waxman, A. Gal‐Yam, E. O. Ofek, Sagi Ben-Ami, D. Berge, M. Kowalski, R. Bühler, S. D. Worm, J. E. Rhoads, I. Arcavi, Dan Maoz, D. Polishook, Nicholas C. Stone, Benny Trakhtenbrot, M. Ackermann, O. Aharonson, O. Birnholtz, Doron Chelouche, D. Guetta, N. Hallakoun, A. Horesh, Doron Kushnir, T. Mazeh, J. Nordin, A. Ofir, S. Ohm, D. Parsons, Asaf Pe’er, H. B. Perets, V. Perdelwitz, D. Poznanski, I. Sadeh, Ilan Sagiv, S. Shahaf, Maayane T. Soumagnac, L. Tal-Or, J. Van Santen, Barak Zackay, O. Guttman, Param Rekhi, A. Townsend, A. Weinstein, Isak Wold   +43 more
openalex   +6 more sources

Wide-field conversions for reflecting telescopes [PDF]

Monthly Notices of the Royal Astronomical Society, 1987
R. V. Willstrop
openalex   +2 more sources

A wide-field reflecting telescope.

The Astronomical Journal, 1946
F. Henroteau
openalex   +3 more sources

A Simple Wide-Field Cassegrain Telescope [PDF]

Monthly Notices of the Royal Astronomical Society, 1976
C. F. W. Harmer, C. G. Wynne
openalex   +2 more sources

Astrometric Calibration and Performance of the Dark Energy Spectroscopic Instrument Focal Plane

The Astronomical Journal, 2023
The Dark Energy Spectroscopic Instrument, consisting of 5020 robotic fiber positioners and associated systems on the Mayall telescope at Kitt Peak, Arizona, is carrying out a survey to measure the spectra of 40 million galaxies and quasars and produce ...
S. Kent, E. Neilsen, K. Honscheid, D. Rabinowitz, E. F. Schlafly, J. Guy, D. Schlegel, J. García-Bellido, T. S. Li, E. Sanchez, J. Silber, J. Aguilar, S. Ahlen, D. Brooks, T. Claybaugh, A. de la Macorra, P. Doel, D. J. Eisenstein, K. Fanning, A. Font-Ribera, J. E. Forero-Romero, S. Gontcho A. Gontcho, J. Jimenez, D. Kirkby, T. Kisner, A. Kremin, M. Landriau, L. Le Guillou, M. E. Levi, C. Magneville, M. Manera, P. Martini, A. Meisner, R. Miquel, J. Moustakas, J. Nie, N. Palanque-Delabrouille, W. J. Percival, C. Poppett, M. Rezaie, A. J. Ross, G. Rossi, M. Schubnell, H. Seo, Gregory Tarlé, B. A. Weaver, R. Zhou, Z. Zhou, H. Zou   +48 more
doaj   +1 more source

Towards a BRICS Optical Transient Network (BRICS-OTN) [PDF]

Anais da Academia Brasileira de Ciências, 2021
This paper is based on a proposal submitted for a BRICS astronomy flagship program, which was presented at the 2019 meeting of the BRICS Astronomy Working Group, held in Rio de Janeiro from 29 September to 2 October 2019.
DAVID A.H. BUCKLEY, VANESSA A. MCBRIDE, ULISSES BARRES DE ALMEIDA, BORIS SHUSTOV, ALEXEI POZANENKO, ALEXANDER LUTOVINOV, AMITESH OMAR, JAYANT MURTHY, MARGARITA SAFONOVA, JIFENG LIU, ROBERTO SORIA   +10 more
doaj   +1 more source

Predicting the Yields of z > 6.5 Quasar Surveys in the Era of Roman and Rubin

The Astrophysical Journal, 2023
About 70 luminous quasars discovered at z > 6.5 are strongly biased toward the bright end, thus not providing a comprehensive view of quasar abundance beyond the cosmic dawn. We present the predicted results of the Roman/Rubin high-redshift quasar survey,
Wei Leong Tee, Xiaohui Fan, Feige Wang, Jinyi Yang, Sangeeta Malhotra, James E. Rhoads   +5 more
doaj   +1 more source