Results 21 to 30 of about 9,499,304 (290)

Objective-Prisms on Schmidt Telescopes: Past Activity and Future Prospects

, 1997
Objective-prisms combined with wide field Schmidt Telescopes have been used for a wide variety of astronomical studies over the last 20 years ranging from searches for quasars, emission line objects and carbon stars to crude galaxy redshift ...
Hartley, M, M. Hartley, Parker, QA, Q. A. Parker   +3 more
core   +2 more sources

PROGRESS IN THE STUDY OF DECAMETER-WAVELENGTH SOLAR RADIO EMISSION WITH UKRAINIAN RADIO TELESCOPES. Part 1. (Invited paper) [PDF]

Radio Physics and Radio Astronomy, 2023
Subject and Purpose. Results are presented of the solar corona investigations performed with the world famous Ukrainian radio telescopes. The work has been aimed at offering a consistent review of recent achievements in observations of a variety of low ...
A. A. Stanislavsky, A. A. Koval, I. N. Bubnov, A. I. Brazhenko   +3 more
doaj   +1 more source

Obstructed Telescopes Versus Unobstructed Telescopes for Wide Field Survey—A Quantitative Analysis [PDF]

Publications of the Astronomical Society of the Pacific, 2014
Telescopes with unobstructed pupil are known to deliver clean point spread function (PSF) to their focal plane, in contrast to traditional telescopes with obstructed pupil. Recent progress in the manufacturing aspheric surfaces and mounting accuracy favors unobstructed telescopes over obstructed telescopes for science cases that demand stable and clean
Singaravelu, Balasubramanian, Cabanac, Remi A.   +1 more
openaire   +2 more sources

Study of Wide-Field-of-View X-ray Observations of the Virgo Cluster Using the Lobster Eye Imager for Astronomy

Universe
The Lobster Eye Imager for Astronomy (LEIA) is the pathfinder of the wide-field X-ray telescope used in the Einstein Probe mission. In this study, we present an image of the Virgo Cluster taken by LEIA in the 0.5–4.5 keV band with an exposure time of ∼17.
Wen-Cheng Feng, Shu-Mei Jia, Hai-Hui Zhao, Heng Yu, Hai-Wu Pan, Cheng-Kui Li, Yu-Lin Cheng, Shan-Shan Weng, Yong Chen, Yuan Liu, Zhi-Xing Ling, Chen Zhang   +11 more
doaj   +1 more source

Wide-field corrector for a Gregorian telescope

Astronomy Reports, 2007
12 ...
openaire   +2 more sources

HATSouth: A Global Network of Fully Automated Identical Wide-Field Telescopes [PDF]

, 2013
Artículo de publicación ISI.HATSouth is the world's first network of automated and homogeneous telescopes that is capable of year-round 24 hr monitoring of positions over an entire hemisphere of the sky.
Schmidt, B, Penev, K, Afonso C., Schmidt B., Schmidt, B., Zhou G., Ueltzhoeffer, K, Hartman J. D., Sackett, P. D., Rabus M., Hartman, Joel D., Csubry Z., Penev K., Jordan, A, Afonso, C., Sari P., Ueltzhoeffer K., Csák, B., Bakos, Gaspar Aron, Hartman, J., Zhou, G, Afonso, C, Mancini, L, Mancini, L., Henning, T., Csubry, Zoltan, Noyes, Rw, Lázár, J., Bayliss D., Noyes, Robert W., Penev, K., Papp, I., Papp, I, Sari, P, Rabus, M., Kovács, G., Sári, P., Conroy, P, Suc V., Bakos, Ga, Bakos G. A., Sackett, Penny, Hartman, J. D., Csubry, Z, Sasselov, Dd, Henning, Thomas, Bayliss, D., Schmidt, Brian, Beky B., Noyes, R. W., Beky, B, Zhou, G., Conroy P., Csak, B, Sasselov, D. D., Kovacs G., Csak B., Rabus, M, Conroy, Peter, Noyes R. W., Béky, B., Bayliss, Daniel, Sackett, Pd, Henning, T, Lazar J., Conroy, P., Ueltzhoeffer, K., Zhou, Guyin (George), Suc, V, Papp I., Csubry, Z., Bakos, G. Á., Kovacs, G, Lazar, J, Jordán, A., Henning T., Jordan A., Bakos, Gaspar, Hartman, Jd, Bayliss, D, Sackett P. D., Sasselov D. D., Csák, Balázs, Mancini L., Suc, V.   +84 more
core   +1 more source

Comparison of beam combiners for a synthetic aperture imaging telescope [PDF]

Journal of the European Optical Society-Rapid Publications, 2006
Future astronomical space missions will comprise a constellation of several optical telescopes to detect exo-planets by interferometric nulling of starlight.
van der Avoort Casper, Pereira Silvania F., Braat Joseph J.M., den Herder Jan-Willem   +3 more
doaj   +1 more source

PSF-based Analysis for Detecting Unresolved Wide Binaries

The Astrophysical Journal Supplement Series, 2023
Wide binaries play a crucial role in analyzing the birth environment of stars and the dynamical evolution of clusters. When wide binaries are located at greater distances, their companions may overlap in the observed images, becoming indistinguishable ...
You Wu, Jiao Li, Chao Liu, Yi Hu, Long Xu, Tanda Li, Xuefei Chen, Zhanwen Han   +7 more
doaj   +1 more source

Understanding the Neutron Star Population with the SKAO telescopes

The Open Journal of Astrophysics
The known population of non-accreting neutron stars is ever growing and currently consists of more than 3500 sources. Pulsar surveys with the SKAO telescopes will greatly increase the known population, adding radio pulsars to every subgroup in the radio ...
Lina Levin, Manjari Bagchi, Marta Burgay, Adam. T. Deller, Vanessa Graber, Andrei Igoshev, Michael Kramer, Duncan Lorimer, Bettina Posselt, Thiagaraj Prabu, Kaustubh Rajwade, Nanda Rea, Benjamin Stappers, Thomas. M. Tauris, Patrick Weltevrede   +14 more
doaj   +4 more sources

New techniques in astronomical spectroscopy for 8-m telescopes [PDF]

, 1998
The purpose of this thesis is to investigate new instrument technology to enhance the capabilities of 8-m telescopes. This thesis first describes the theory, design, construction, and testing of an immersed grating.
Lee, David, Lee, D.
core