Results 41 to 50 of about 170,397 (209)

SALT spectropolarimetry commissioning [PDF]

, 2010
Includes bibliographical references (p. 111-113).The large (10m) aperture of the Southern African Large Telescope (SALT) coupled with the unique capabilities of the Robert Stobie Spectrograph (RSS), promises unparalleled prospects for polarimetric ...
Brink, Janus Daniel
core   +1 more source

Experimental Investigations of Sigma Vectors in Nodal Aberration Theory for Coma-Free Pivot Misalignment State of a Cassegrain Telescope

Gazi Üniversitesi Fen Bilimleri Dergisi
The study aims experimental investigation of the sigma vectors in Nodal Aberration Theory for a customized non-aplanatic high-precision Cassegrain telescope under coma-free pivot point (CFPP) misalignment conditions.
Meltem Yeşiltepe, Sefer Bora Lişesivdin   +1 more
doaj   +1 more source

The 50 cm telescope of Hoa Lac observatory: an introduction

Vietnam Journal of Science, Technology and Engineering, 2022
The Vietnam National Space Center has recently established an observatory in Hoa Lac, near Ha Noi. The observatory is equipped with a 50 cm diameter Ritchey-Chrétien optical telescope.
Nguyen Thi Thao, Mai Thuy Dung, Pham Vu Loc, Nguyen Thi Kim Ha, Pham Ngoc Diep, Pierre Darriulat   +5 more
doaj   +1 more source

The large size telescope of the Cherenkov Telescope Array [PDF]

SPIE Proceedings, 2014
The Cherenkov Telescope Array (CTA) project aims to implement the world’s largest next generation of Very High Energy gamma-ray Imaging Atmospheric Cherenkov Telescopes devoted to the observation from a few tens of GeV to more than 100 TeV. To view the whole sky, two CTA sites are foreseen, one for each hemisphere.
Ambrosi, G., Awane, Y., Baba, H., Bamba, A., Barceló, M., Barres De Almeida, U., Barrio, J. A., Blanch Bigas, O., Boix, J., Brunetti, L., Carmona, E., Chabanne, E., Chikawa, M., Colin, R., Cortina, J., Contreras, J. L., Dazzi, F., De Angelis, A., Deleglise, G., Delgado, C., Díaz, C., Fiasson, A., Fink, D., Fouque, N., Freixas, L., Fruck, C., Gadola, A., García, R., Gascon, D., Geffroy, N., GIGLIETTO, Nicola, Giordano, F., Grañena, F., Gunji, S., Hagiwara, R., Hamer, N., Hanabata, Y., Hassan, T., Hatanaka, K., Hirotani, K., Inoue, S., Inoue, Y., Ioka, K., Jablonski, C., Kagaya, M., Katagiri, H., Kishimoto, T., Kodani, K., Kohri, K., Konno, Y., Koyama, S., Kubo, H., Kushida, J., Lamanna, G., Le Flour, T., Lorenz, E., López, R., López Moya, M., Majumdar, P., Manalaysay, A., Mariotti, M., Martínez, G., Martínez, M., Mazin, D., Miranda, J. M., Mirzoyan, R., Monteiro, I., Moralejo, A., Murase, K., Nagataki, S., Nakajima, D., Nakamori, T., Nishijima, K., Noda, K., Nozato, A., Ohira, Y., Ohishi, M., Ohoka, H., Okumura, A., Orito, R., Panazol, J. L., Paneque, D., Paoletti, R., Paredes, J. M., Pauletta, G., Podkladkin, S., Prast, J., Rando, R., Reimann, O., Ribó, M., Rosier Lees, S., Saito, K., Saito, T., Saito, Y., Sakaki, N., Sakonaka, R., Sanuy, A., Sasaki, H., Sawada, M., Scalzotto, V., Schultz, S., Schweizer, T., Shibata, T., Shu, S., Sieiro, J., Stamatescu, V., Steiner, S., Straumann, U., Sugawara, R., Tajima, H., Takami, H., Tanaka, S., Tanaka, M., Tejedor, L. A., Terada, Y., Teshima, M., Totani, T., Ueno, H., Umehara, K., Vollhardt, A., Wagner, R., Wetteskind, H., Yamamoto, T., Yamazaki, R., Yoshida, A., Yoshida, T., Yoshikoshi, T.   +126 more
openaire   +1 more source

Compact Optical Visual Magnification System with a Wide Field of View

Sensors
A new concept for designing a visual magnification system is introduced. In this concept, apart from the conventional objective and the eyepiece group lenses in the system, an additional Power-Corrector (PC) group of lenses is introduced in the optical ...
Uri Milman, Jacob Kaufmann, Yoel Arieli
doaj   +1 more source

Temporal Variations of the Turbulence Profiles at the Sayan Solar Observatory Site

Atmosphere, 2019
The paper focuses on the development of the method to estimate the mean characteristics of the atmospheric turbulence. Using an approach based on the shape of the energy spectrum of atmospheric turbulence over a wide range of spatial and temporal scales,
Artem Shikhovtsev, Pavel Kovadlo, Vladimir Lukin   +2 more
doaj   +1 more source

The Metagenomic Telescope

PLoS ONE, 2014
Next generation sequencing technologies led to the discovery of numerous new microbe species in diverse environmental samples. Some of the new species contain genes never encountered before. Some of these genes encode proteins with novel functions, and some of these genes encode proteins that perform some well-known function in a novel way.
Szalkai, Balázs, Scheer, Ildikó, Nagy, Kinga, G. Vértessy, Beáta, Grolmusz, Vince   +4 more
openaire   +4 more sources

Grinding metre scale mirror segments for the E-ELT ground based telescope [PDF]

, 2011
The next generation of ground based telescopes require many hundreds of metre scale off-axis mirrors. In this paper the grinding of a 1.45m scale Zerodur® mirror segment for the European Extremely Large Telescope (E-ELT) is introduced.
P. Shore, P. Morantz, P. Comley, Shore, Paul, X. Tonnellier, Comley, Paul, Morantz, Paul, Tonnellier, Xavier   +7 more
core   +1 more source

Adaptation and Mechanical Validation of a COTS Telescope for LEO Hyperspectral Imaging Using an Additively Manufactured Structure

Applied Sciences
Small satellites provide cost-effective platforms for environmental monitoring. Open-source commercial off-the-shelf (COTS) hyperspectral payloads, such as those launched with HYPSO-1 and -2, have a ground sampling distance (GSD) of 100 m.
Henrik H. Øvrebø, Brage Sterkeby Hole, Henrik Pedersen Hauge, Martin Steinert, Anna Olsen, Fred Sigernes, Joseph L. Garrett   +6 more
doaj   +1 more source

Project of the Large Solar Telescope with mirror 3 m in diameter

Solar-Terrestrial Physics, 2020
One of the most important problems of modern solar physics is the observation of the small-scale structure of the solar atmosphere at various heights (including the chromosphere and corona) in different spectral lines.
Grigoryev V.M., Demidov M.L., Kolobov D.Yu., Pulyaev V.A., Skomorovsky V.I., Chuprakov S.A.   +5 more
doaj   +1 more source