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Articoli di riviste sul tema "Telescopes"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Tokunaga, A. T., C. Ftaclas, J. R. Kuhn, and P. Baudoz. "High Dynamic Range and the Search for Planets." Symposium - International Astronomical Union 211 (2003): 487–96. http://dx.doi.org/10.1017/s0074180900211200.

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General arguments for optimized coronagraphy in the search for planets are presented. First, off-axis telescopes provide the best telescopic platforms for use with coronagraphy, and telescope fabrication technology now allows the fabrication of such telescopes with diameters of up to 6.5 m. We show that in certain circumstances a smaller telescope with an off-axis primary has a signal-to-noise advantage compared with larger Cassegrain telescopes. Second, to fully exploit the advantages of the coronagraph for suppressing stray light, it is necessary to use a high Strehl ratio adaptive optics sy

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2

Liu, Yi, Changqing Feng, Ingrid-Maria Gregor, et al. "ADENIUM — A demonstrator for a next-generation beam telescope at DESY." Journal of Instrumentation 18, no. 06 (2023): P06025. http://dx.doi.org/10.1088/1748-0221/18/06/p06025.

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Abstract High-resolution beam telescopes for charged particle tracking are one of the most important and equally demanding infrastructure items at test beam facilities. The main purpose of beam telescopes is to provide precise reference track information of beam particles to measure the performance of a device under test (DUT). In this report the development of the ADENIUM beam telescope (ALPIDE sensor based DESY Next test beam Instrument) as a demonstrator and prototype for a next-generation beam telescope is presented. The ADENIUM beam telescope features up to six pixelated reference planes

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3

Lu, Zhiyi. "Analysis of the Principle and State-of-art Applications of Astronomical Telescope." Highlights in Science, Engineering and Technology 72 (December 15, 2023): 83–89. http://dx.doi.org/10.54097/4kna8f33.

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Astronomical telescopes have been instrumental in enhancing our comprehension of the cosmos since ancient eras. This study explores these remarkable instruments' principles and state-of-art applications, tracing their development from early refracting telescopes to modern space and ground-based telescopes. The primary focus is to analyze the imaging principles of optical and radio telescopes and showcase their significance in capturing high-resolution observations of celestial objects. It also highlights recent achievements made by advanced telescopes, including the James Webb Space Telescope

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4

Chen, Siyu. "Comparisons of Two Types of Astronomical Telescopes: Terrestrial Telescopes and Space Telescopes." Theoretical and Natural Science 2, no. 1 (2023): 75–80. http://dx.doi.org/10.54254/2753-8818/2/20220166.

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In the field of astrophysics and cosmology, astronomical telescopes are the main and key tool for observing and capturing information of celestial bodies. Generally, there are two types of telescopes, i.e., terrestrial telescopes and space telescopes. This study will be mainly focused on the differences and similarities between the two types mentioned above. According to the analysis, the ground telescope is larger and collect data with processing instead of real picture. The space telescope, on the other hand, is smaller but hard to repair, which is able to send back the real pictures of the

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5

Kim, Sang Chul. "Paper Productivity of Ground-based Large Optical Telescopes from 2000 to 2009." Publications of the Astronomical Society of Australia 28, no. 3 (2011): 249–60. http://dx.doi.org/10.1071/as11011.

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AbstractWe present an analysis of the scientific (refereed) paper productivity of the current largest (diameter > 8m) ground-based optical (and infrared) telescopes during the ten-year period from 2000 to 2009. The telescopes for which we have gathered and analysed the scientific publication data are the two 10-m Keck telescopes, the four 8.2-m Very Large Telescopes (VLT), the two 8.1-m Gemini telescopes, the 8.2-m Subaru telescope, and the 9.2-m Hobby–Eberly Telescope (HET). We have analysed the numbers of papers published in various astronomical journals produced by using these telescopes

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6

Xu, Yuchen. "Comparison Of Different Telescopes: James Webb Space, Giant Magellan and Event Horizon." Highlights in Science, Engineering and Technology 112 (August 20, 2024): 101–8. http://dx.doi.org/10.54097/pqj1a442.

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Mankind's obsession with space and the persistence of searching for extraterrestrial life has led to the invention of telescopes as a way to explore the mysterious vastness of the universe. In this paper, the development history of the telescope is studied, as well as the famous events observed by the telescope (black hole, solar structure, etc.), and the structure, environment and interference of the ground-based telescope, space telescope and joint telescope are compared and analyzed. By comparison, it is found that most large telescopes have a variety of research directions and are more res

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7

Hong, Yiduo. "Working principle of the radio telescope and the study of the sun." Theoretical and Natural Science 12, no. 1 (2023): 172–76. http://dx.doi.org/10.54254/2753-8818/12/20230461.

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Radio telescopes can help people observe celestial bodies far away from people, which is conducive for astronomers to observe and draw the trend of celestial transformations. The use of radio telescopes allows scholars to study and understand celestial bodies to a new height. At present, the more famous are the Webb Space Telescope in the United States, the Hubble Space Telescope and China's Tianyan. In the case of the eye of Heaven in Guizhou, China, the surface of the eye is covered by a metal layer one millimeter thick, so it can not withstand excessive pressure, and the maintenance personn

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8

Li, Yuqiao. "State-of-art Facilities and Prospect of Radio Telescopes." Highlights in Science, Engineering and Technology 5 (July 7, 2022): 201–7. http://dx.doi.org/10.54097/hset.v5i.743.

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The radio telescopes play a crucial role in astrophysical observations; hence it is necessary to discuss about the significance, structure, and applications of radio telescope and analyse the difference between the state-of-art radio telescopes (FAST and SKA) based on present information. Specifically, the background and present conditions as well as the history of radio telescopes will be introduced initially. Subsequently, the significance of radio telescope will be explained, including structure and application of radio telescopes. Subsequently, the doubts on FAST and SKA and strengths of t

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9

Pech, Miroslav, Justin Albury, Jose A. Bellido, et al. "Simulation of the optical performance of the Fluorescence detector Array of Single-pixel Telescopes." EPJ Web of Conferences 210 (2019): 05014. http://dx.doi.org/10.1051/epjconf/201921005014.

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The Fluorescence detector Array of Single-pixel Telescopes (FAST) is a proposed large-area, next-generation experiment for the detection of ultra-high energy cosmic rays via the atmospheric fluorescence technique. The telescope’s large field-of-view (30 ×30) is imaged by four 200 mm photomultiplier-tubes at the focal plane of a segmented spherical mirror of 1.6 m diameter. Two prototypes are installed and taking data at the Black Rock Mesa site of the Telescope Array experiment in central Utah, USA. We present the process used for optimization of the optical performance of this compact and low

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10

Porter, F. I., J. M. White, J. Goldberg, J. L. Demer, and A. Koval. "Predicting Successful Low Vision Rehabilitation with Telescopic Spectacles." Journal of Visual Impairment & Blindness 86, no. 1 (1992): 29–32. http://dx.doi.org/10.1177/0145482x9208600116.

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Although telescopic spectacles magnify the retinal image and should improve functional vision, many low vision patients are unable to use them. The authors found that involuntary head movements and the reduction of acuity with imposed head motion differentiated successful from unsuccessful telescope users and that success was related to the age at which telescopes were first used.

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11

Burton, Michael G., John W. V. Storey, and Michael C. B. Ashley. "Science Goals for Antarctic Infrared Telescopes." Publications of the Astronomical Society of Australia 18, no. 2 (2001): 158–65. http://dx.doi.org/10.1071/as01026.

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AbstractOver the past few years, site-testing at the South Pole has revealed conditions that are uniquely favourable for infrared astronomy. In particular, the exceptionally low sky brightness throughout the near and mid-infrared leads to the possibility of a modest-sized telescope achieving comparable sensitivity to that of existing 8–10 metre class telescopes. An 8 metre Antarctic telescope, if constructed, would yield performance that would be unrivalled until the advent of the NGST. In this paper we review the scientific potential of infrared telescopes in Antarctica, and discuss their com

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12

Li, X., X. Yuan, B. Gu, S. Yang, Z. Li, and F. Du. "CHINESE ANTARCTIC ASTRONOMICAL OPTICAL TELESCOPES." Revista Mexicana de Astronomía y Astrofísica Serie de Conferencias 51 (April 13, 2019): 135–38. http://dx.doi.org/10.22201/ia.14052059p.2019.51.23.

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Due to its superb seeing conditions, the Antarctica plateau is widely considered to be an excellent astronomical site. The long periods of uninterrupted darkness at polar sites such as Dome A provide a possibility of continuous observation for more than three months, which is quite suitable for time-domain astronomy. Since 2008, several wide-field optical photometric telescopes, including Chinese Small Telescope ARray (CSTAR), two of the Three Antarctic Survey Telescopes (AST3), have been deployed on Dome A. Science with these telescopes covers variable stars, supernovas, exoplanets, etc. For

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13

HUGHES, S. B. "INITIAL STEREO ANALYSIS OF MRK 421 FROM THE VERITAS TELESCOPES." International Journal of Modern Physics A 22, no. 14n15 (2007): 2461–67. http://dx.doi.org/10.1142/s0217751x07036816.

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VERITAS (Very Energetic Radiation Imaging Telescope Array System), an array of ground-based gamma-ray telescopes in southern Arizona, USA, has been taking data in hardware stereo mode since March, 2006. The April–May 2006 dark run provided a large set of data from two telescopes on the known blazar Markarian (Mrk) 421. An initial analysis produced a light curve and preliminary cuts showing the two telescope array's angular resolution to be 0.19°. The remaining two VERITAS telescopes will be brought online by January, 2007.

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14

Song, Su. "Evolutions and Principles of Space and Radio Telescope." Highlights in Science, Engineering and Technology 72 (December 15, 2023): 47–52. http://dx.doi.org/10.54097/8r8fyx84.

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Contemporarily, various types of telescopes have been proposed as tools for cosmology observation. This study discusses main types of telescopes, i.e., space and radio telescopes people used to observe universe and gives deep description and comparison between them. Radio telescope is the telescope which can receive radio waves from the outer space and can detect waves in different wavelengths besides visible light. It has a long history, as radio telescope is built on Earth and relatively easier for people to make it, but the drawback is that radio telescope may be disturbed by nature conditi

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15

Strassmeier, Klaus G., Thomas Granzer, Michael Weber, et al. "The STELLA Robotic Observatory on Tenerife." Advances in Astronomy 2010 (2010): 1–11. http://dx.doi.org/10.1155/2010/970306.

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The Astrophysical Institute Potsdam (AIP) and the Instituto de Astrofísica de Canarias (IAC) inaugurated the robotic telescopes STELLA-I and STELLA-II (STELLar Activity) on Tenerife on May 18, 2006. The observatory is located on the Izaña ridge at an elevation of 2400 m near the German Vacuum Tower Telescope. STELLA consists of two 1.2 m alt-az telescopes. One telescope fiber feeds a bench-mounted high-resolution echelle spectrograph while the other telescope feeds a wide-field imaging photometer. Both scopes work autonomously by means of artificial intelligence. Not only that the telescopes a

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16

Nyheim, Bendik, Signe Riemer-Sørensen, Rodrigo Parra, and Claudia Cicone. "Machine Learning based Pointing Corrections for Radio/Sub-millimeter Telescopes." Nordic Machine Intelligence 4, no. 1 (2024): 11. http://dx.doi.org/10.5617/nmi.10923.

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Radio, sub-millimeter and millimeter ground-based telescopes are powerful instruments for studying the gas and dust-rich regions of the Universe that are invisible at optical wavelengths, but the pointing accuracy is crucial for obtaining high-quality data. Pointing errors are small deviations of the telescope’s orientation from its desired direction. The telescopes use linear regression pointing models to correct for these errors, taking into account various factors such as weather conditions, telescope mechanical structure, and the target’s position in the sky. However, residual pointing err

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17

Zhou, Weimin. "Analysis of the Observations for Three Telescopes: EHT, FAST and LBTI." Highlights in Science, Engineering and Technology 88 (March 29, 2024): 278–85. http://dx.doi.org/10.54097/9k8yw745.

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As technology continuously advances, the telescope technologies available to humans are becoming increasingly refined, leading to the discovery of an ever-growing number of phenomena using these telescopes. This allows for a deeper understanding of the universe one inhabits, with more astronomical phenomena receiving scientific explanations. This article primarily seeks to broaden our knowledge in this area by describing three distinct astronomical telescopes. It introduces the components and detection principles of the Event Horizon Telescope (EHT), FAST, and the Large Binocular Telescope Int

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18

Pramudya, Yudhiakto, A. R. Dhimas Prayoga Jullyantama, M. Khairul Ardi, Cintha Ayu Wandira, and Muchlas. "Observational Technique Development and Instruments Status in Observatorium Universitas Ahmad Dahlan." Journal of Physics: Conference Series 2773, no. 1 (2024): 012014. http://dx.doi.org/10.1088/1742-6596/2773/1/012014.

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Abstract The Observatorium Universitas Ahmad Dahlan (UAD) is an urban telescope located in close proximity to city lights. Light pollution monitoring is performed using a Sky Quality Meter and an All Sky Camera, revealing a maximum Night Sky Brightness (NSB) value of 18 mag/arcsec2. A 17-inch Planewave Telescope housed in a 5-meter dome is used to image nebulae and galaxies. Portable telescopes are used to observe the crescent moon, with the use of a buffle and stacking techniques enabling daytime imaging. Lunar elongation and altitude data were obtained to assess the telescope’s capabilities

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19

Liu, Xuan, Junhong Deng, King Fai Li, et al. "Optical telescope with Cassegrain metasurfaces." Nanophotonics 9, no. 10 (2020): 3263–69. http://dx.doi.org/10.1515/nanoph-2020-0012.

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AbstractThe Cassegrain telescope, made of a concave primary mirror and a convex secondary mirror, is widely utilized for modern astronomical observation. However, the existence of curved mirrors inevitably results in bulky configurations. Here, we propose a new design of the miniaturized Cassegrain telescope by replacing the curved mirrors with planar reflective metasurfaces. The focusing and imaging properties of the Cassegrain metasurface telescopes are experimentally verified for circularly polarized incident light at near infrared wavelengths. The concept of the metasurface telescopes can

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20

Williams, Richard J., and James Mulherin. "The Development of Advanced-Technology Automated/Robotic Telescope Systems and the Future of Small-Telescope Astronomy." International Astronomical Union Colloquium 183 (2001): 95–101. http://dx.doi.org/10.1017/s0252921100078672.

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AbstractDuring the 1990s groups at universities around the world developed small working automated/robotic telescopes that proved the feasibility of using such systems for education and research projects. A few of the more successful projects such as the Bradford Robotic Observatory in the United Kingdom and the University of Iowa’s Automated Telescope Facility (AFT) and Iowa Robotic Observatory (IRO) programs proved how useful and powerful these systems can be in practice. This paper describes how one company, Torus Technologies, developed hardware and software technologies to create the most

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21

Bedding, T. R., J. M. Beckers, M. Faucherre, et al. "The VLT Interferometer." Symposium - International Astronomical Union 158 (1994): 143–50. http://dx.doi.org/10.1017/s0074180900107454.

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One of the observing modes available with the ESO Very Large Telescope will be coherent combination of the light received by up to four 8 m unit telescopes and several 1.8 m auxiliary telescopes. The location of the main telescopes is fixed, while auxiliary telescopes can be moved among some 30 observing stations. The locations of these stations were chosen to augment the (u, v) coverage of the unit telescopes as well as to function as an independent interferometric array.The 8 m telescopes will be equipped with adaptive optics to correct for seeing-induced wavefront aberrations. This wavefron

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22

Zeldovich, Lina. "A Golden Eye in the Sky." Mechanical Engineering 145, no. 6 (2023): 24–29. http://dx.doi.org/10.1115/1.2023-nov1.

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Abstract The James Webb Telescope is NASA’s largest and most complex orbiting observatory to date. Ten years in the making at a price tag of nearly $10 billion, Webb was designed to not only go where no other telescopes have gone before, but also see things no other telescopes have been able to see. This is the story of the engineering underpinning this new space telescope.

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23

Hall, A., I. L. Bailey, L. S. Kekelis, T. W. Raasch, and G. L. Goodrich. "Retrospective Survey to Investigate Use of Distance Magnifiers for Travel." Journal of Visual Impairment & Blindness 81, no. 9 (1987): 418–23. http://dx.doi.org/10.1177/0145482x8708100906.

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Seventy-eight subjects from the Western Blind Rehabilitation Center at the Palo Alto Veterans Administration Hospital and 34 subjects from the U.C. Berkeley Low Vision Center were surveyed to investigate the use of distance magnifiers for travel. Information is reported regarding demographic characteristics, vision characteristics, usual travel patterns, characteristics of telescopes used by the subjects, telescope training, and travel habits with telescopic devices, along with similarities and differences between the two groups.

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24

Davis, John. "Commission 9: Instruments and Techniques (Instruments et Techniques)." Transactions of the International Astronomical Union 21, no. 1 (1991): 41–52. http://dx.doi.org/10.1017/s0251107x00009780.

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The period covered by this report has seen significant progress in the development of the new generation of telescopes with apertures in the 8 m plus range. The period has encompassed the major construction phase of the 10 m Keck Telescope, witnessed the commissioning of the European Southern Observatory’s (ESO) New Technology Telescope and the approval of funding for the ESO Very Large Telescope (VLT). Significant progress has been achieved in developing the necessary technology for manufacturing and figuring large mirrors. There have been major expansions of activity in the areas of active c

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Turner, Michael S. "Extremely large telescopes at risk." Science 382, no. 6673 (2023): 857. http://dx.doi.org/10.1126/science.adm9964.

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Images of the cosmos from the Hubble Space Telescope and the James Webb Space Telescope have awed the public and astronomers alike. Until the Hubble, breakthroughs in astronomy came from big telescopes on mountain-top observatories—discoveries that include the expansion of the Universe and planets orbiting other stars. A new generation of extremely large ground-based telescopes is under development, which, when paired with space-based observatories, will produce even more remarkable discoveries about our Universe.

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26

Jhetam, Siddeeqa, and Khathutshelo P Mashige. "Effects of spectacles and telescopes on visual function in students with oculocutaneous albinism." African Health Sciences 20, no. 2 (2020): 758–67. http://dx.doi.org/10.4314/ahs.v20i2.28.

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Purpose: To investigate the effects of spectacle and telescope corrections on visual acuity (VA), contrast sensitivity (CS) and reading rates (RR) in students with oculocutaneous albinism (OCA). Methods: An observational study design was conducted on 81 students with OCA. Distance and near VA, CS and RR were measured without correction, with spectacle correction and with a combination of spectacle correction and telescopes. Results: The mean distance and near VA values with a combination of spectacle correction and telescopes were significantly better than those without correction

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Mack, Peter, John Stein, and Wonyong Han. "ACE FlexGrid Telescope Flexure and Pointing Software." International Astronomical Union Colloquium 183 (2001): 111–12. http://dx.doi.org/10.1017/s0252921100078696.

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AbstractWe describe ACE FlexGrid, a telescope flexure and pointing model based on an empirical grid of reference points. This software is valid for all types of telescopes and is especially suited to robotic telescopes which repeatedly observe the same object.

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Ofek, E. O., S. Ben-Ami, D. Polishook, et al. "The Large Array Survey Telescope—System Overview and Performances." Publications of the Astronomical Society of the Pacific 135, no. 1048 (2023): 065001. http://dx.doi.org/10.1088/1538-3873/acd8f0.

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Abstract The Large Array Survey Telescope (LAST) is a wide-field visible-light telescope array designed to explore the variable and transient sky with a high cadence. LAST will be composed of 48, 28 cm f/2.2 telescopes (32 already installed) equipped with full-frame backside-illuminated cooled CMOS detectors. Each telescope provides a field of view (FoV) of 7.4 deg2 with 1.″25 pix−1, while the system FoV is 355 deg2 in 2.9 Gpix. The total collecting area of LAST, with 48 telescopes, is equivalent to a 1.9 m telescope. The cost-effectiveness of the system (i.e., probed volume of space per unit

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Bennett, J. A. "Book Review: Telescopic Curiosities: Unusual Telescopes." Journal for the History of Astronomy 24, no. 4 (1993): 306. http://dx.doi.org/10.1177/002182869302400409.

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Braunecker, Bernhard. "Widefield Telescopes." SPG Mitteilungen - Communications de la SSP 75 (April 15, 2025): 31–33. https://doi.org/10.5281/zenodo.15230235.

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Blalock, Todd, Brian Myer, Brittany Cox, and Jessica Nelson. "The Manufacturing of a Multi-surface Monolithic Telescope with Freeform Surfaces." EPJ Web of Conferences 215 (2019): 06004. http://dx.doi.org/10.1051/epjconf/201921506004.

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Monolithic multi-surface telescopes combined with freeform optical surfaces provide improvements in optical performance in a smaller footprint as compared to systems with spherical surfaces, while providing superior mechanical stability to traditional telescope assemblies. Three different monolithic telescope concepts, in different configurations and optical performance were produced as proof of concepts. The results of the telescopes are presented as well as the unique manufacturing and testing challenges to produce these monolithic optical systems.

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Kuyk, T. "Telescopic Low Vision Aids with Motorized and Auto Focuses." Journal of Visual Impairment & Blindness 90, no. 4 (1996): 333–40. http://dx.doi.org/10.1177/0145482x9609000408.

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Prototypes of motorized-focus telescopes (MFTs) and of a 4X auto-focus telescope (AFT) were constructed, and 22 users of hand-focus telescopes (HFTs) were trained to use them for near-distance and intermediate-distance tasks. Despite the lack of differences in performance with the MFT, AFT, and HFT, the subjects’ ratings on 9 of 10 aspects of telescope performance were significantly higher for the AFT and MFT than for the HFT.

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Mandat, Dusan, Toshihiro Fujii, Max Malacari, et al. "Atmospheric monitoring with the Fluorescence detector Array of Single-pixel Telescopes." EPJ Web of Conferences 197 (2019): 02002. http://dx.doi.org/10.1051/epjconf/201919702002.

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The Fluorescence detector Array of Single-pixel Telescopes (FAST) is a proposed low-cost, largearea, next-generation experiment for the detection of ultrahigh-energy cosmic rays (UHECRs) via the atmospheric fluorescence technique. Two FAST telescopes are currently installed and operating at the Black Rock Mesa site of the Telescope Array Experiment in Utah, USA. Knowledge of the properties of the atmosphere above the detector is of utmost importance for the analysis and reconstruction of the energy and trajectory of UHECRs measured with an atmospheric fluorescence telescope. The FAST experimen

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Ekers, R. D. "Review of Linked Array Instruments." Highlights of Astronomy 8 (1989): 551–52. http://dx.doi.org/10.1017/s1539299600008297.

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At cm wavelengths aperture synthesis radio-telescopes (arrays of linked antennas which synthesize an image of the sky with high angular resolution) are now becoming the dominant astronomical research tool. Major new facilities such as the VLA are in full operation, others such as the Australia Telescope are nearing completion and a number of telescopes designed to form images in real time have been converted to operate in the aperture synthesis mode (e.g. MOST, Bologna Cross). See Napier et al. (1983) for a review of modern synthesis telescopes. The high resolution, sensitivity and freedom fro

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Zhao, Yong, Yingqiang Wang, Fei He, Zhonghua Yao, Zhaojin Rong, and Yong Wei. "A Simplified Pointing Model for Alt-Az Telescopes." Applied Sciences 13, no. 20 (2023): 11238. http://dx.doi.org/10.3390/app132011238.

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The telescope pointing model plays a crucial role in characterizing and explaining the inaccuracies in the telescope’s pointing. It uses mathematical models to express these errors and suggests methods to calibrate and rectify them. By employing the pointing model, one can gain a deeper understanding of the discrepancies in the telescope’s pointing accuracy at various positions and orientations. This article introduces the establishment and validation of a simplified pointing model for correcting the pointing errors of an alt-az telescope. The traditional telescope pointing model, with its com

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Watson, F. G. "Multi-Fibre Spectroscopy with Schmidt Telescopes." International Astronomical Union Colloquium 148 (1995): 70–80. http://dx.doi.org/10.1017/s0252921100021734.

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AbstractLarge Schmidt telescopes are peculiarly well-suited to multifibre spectroscopy. The extent to which the small aperture is compensated by the wide field is illustrated by the fact that the total photon throughput of the 1.2 m UK Schmidt Telescope (UKST) is almost identical to that of the 3.9 m Anglo-Australian Telescope (AAT) in its new 2-degree field (2dF) mode. In the implementation of the technique, Schmidt telescopes have a number of practical advantages, while there is no shortage of scientific problems that can be addressed. However, the instrumentation required to capitalize full

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Zheng, Binwen. "Comparison and Demonstration of the Principle and Applications for the State-of-art Astrophysical Telescopes." Highlights in Science, Engineering and Technology 38 (March 16, 2023): 37–44. http://dx.doi.org/10.54097/hset.v38i.5693.

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With the rapid development of the technique for optics engineering, the telescope has developed rapidly with great performances (i.e., higher resolution), which exhibits great potential in cosmology detection. On this basis, this paper compares and demonstrates the basic principle as well as the state-of-art applications and observations of two typical telescopes, i.e., the Arecibo and Fast. According to the analysis, the later constructed FAST largely expands the searching parameters which offer a path for higher signal-noise ratio. However, it should be noted that ground-based telescopes do

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Nekola, Martin, René Hudec, Martin Jelínek, Petr Kubánek, Jan Štrobl, and Cyril Polášek. "BART: The Czech Autonomous Observatory." Advances in Astronomy 2010 (2010): 1–5. http://dx.doi.org/10.1155/2010/103986.

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The High Energy Astrophysics group of the stellar department of the Astronomical Institute in Ondřejov operates two small aperture robotic telescopes called BART and D50. Both telescopes are capable of making automatic followup observation of gamma-ray burst optical counterparts. This paper deals with the smaller telescope BART.

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39

Wu, Shengyin, Shouguan Wang, Yukuan Mao, and Yan Su. "Trying to Enlarge the Sky Coverage of the FAST." International Astronomical Union Colloquium 182 (2001): 249–53. http://dx.doi.org/10.1017/s0252921100001068.

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AbstractThe proposed FAST project is a novel giant spherical radio telescope, with active elements which form a temporary paraboloid to track radio objects in the sky. Efforts have been made to extend the limited sky coverage that is a characteristic disadvantage of Arecibo-style radio telescopes. Three measures under investigation are introduced in this paper. The expected performance of the telescope is described, and a brief comparison is made with some of the largest existing radio telescopes.

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40

Kuzin S.V., Bogachev S.A., Erkhova N.F., et al. "Solar VUV telescope for nanosatellites." Technical Physics 92, no. 13 (2022): 2021. http://dx.doi.org/10.21883/tp.2022.13.52216.115-21.

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Within the Universat program, a set of solar vacuum ultraviolet (VUV) telescopes has been developed for deployment on 6U nanosatellites. Telescopes are designed to get images of the solar corona. The spectral ranges of observations is considered, the characteristics of the nanosatellite from the point of view of the observations feasibility are opmized, the optical scheme of the telescope and VUV multilayer mirrors coatings and thin-film filters are modelled. Keywords: Nanosatellite, VUV, telescope, solar corona.

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41

Hofmann, Werner. "Intercalibration of Cherenkov telescopes in telescope arrays." Astroparticle Physics 20, no. 1 (2003): 1–3. http://dx.doi.org/10.1016/s0927-6505(03)00137-3.

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42

Kim, Daewook, Youngsik Kim, Heejoo Choi, Yuzuru Takashima, and Christopher Walker. "Inflatable On-Axis and Off-Axis Space Telescope Designs." EPJ Web of Conferences 309 (2024): 03001. http://dx.doi.org/10.1051/epjconf/202430903001.

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In the realm of astronomical scientific exploration, deployable and scalable approaches in space telescope systems are reshaping our understanding of the universe. Two revolutionary membrane-based space telescope designs, on-axis OASIS (Orbiting Astronomical Satellite for Investigating Stellar Systems) and off-axis SALTUS (Single Aperture Large Telescope for Universe Studies), have been developed as mid/far-infrared telescope concepts featuring an inflatable primary mirror. Through the scalable primary aperture design, these deployable space telescopes leverage an all-encompassing optical arch

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43

Iyer, Aditya Arun, Gautham Manuru Prabhu, Tanay Gupta, Shrey Deshmukh, and Rushit Rivankar. "Exploring Design Optimisation Techniques of a Radio Telescope Using Fixed Costing Constraints." Journal of Physics: Conference Series 2571, no. 1 (2023): 012031. http://dx.doi.org/10.1088/1742-6596/2571/1/012031.

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Abstract Cost optimization is a common problem encountered in the design of telescopes. This paper comprehensively discusses various radio telescope designs worldwide, focusing on their design and utilities. It contextualizes the Pulsar data challenge and subsequently discusses and develops a mathematical model for designing radio telescopes. The model assumes a fixed-cost budget. This paper expands current ideas of modeling the system using figure-of-merit equations and optimizing them based on a fixed budget to obtain optimal and affordable radio telescope designs.

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44

Jeon, Young-Beom, Chow-Choong Ngeow, and James M. Nemec. "Ground-based photometry for 42 Kepler-field RR Lyrae stars." Proceedings of the International Astronomical Union 9, S301 (2013): 427–28. http://dx.doi.org/10.1017/s1743921313014889.

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AbstractFollow-up (U)BVRI photometric observations have been carried out for 42 RR Lyrae stars in the Kepler field. The new magnitude and color information will complement the available extensive high-precision Kepler photometry and recent spectroscopic results. The photometric observations were made with the following telescopes: 1-m and 41-cm telescopes of Lulin Observatory (Taiwan), 81-cm telescope of Tenagra Observatory (Arizona, USA), 1-m telescope at the Mt. Lemmon Optical Astronomy Observatory (LOAO, Arizona, USA), 1.8-m and 15-cm telescopes at the Bohyunsan Optical Astronomy Observator

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45

Bloch, Jeffrey. "EUV Astrophysics with ALEXIS: The Wide View." International Astronomical Union Colloquium 152 (1996): 7–14. http://dx.doi.org/10.1017/s0252921100035685.

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Abstract (sommario):

The Array of Low Energy X-ray Imaging Sensors (ALEXIS) satellite is Los Alamos’ pathfinding small space mission achieving low cost and rapid development time for its technology demonstration and science goals. The ALEXIS satellite contains the ALEXIS telescope array, which consists of six EUV/ultrasoft X-ray telescopes utilizing normal incidence multilayer mirrors, microchannel plate detectors, and thin UV rejecting filters. Each telescope is tuned to a relatively narrow bandpass centered at either 130, 171, or 186 angstroms. Each telescope has a 33° field-of-view, and a resolution of ~ 0.25°.

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46

Jacoby, G. H. "Research programmes, productivity, and usage statistics for the 0.9m telescopes at Kitt Peak." Symposium - International Astronomical Union 118 (1986): 237–39. http://dx.doi.org/10.1017/s0074180900151368.

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Abstract (sommario):

Current research programmes using the smaller telescopes at Kitt Peak include spectroscopy, photometry, and imaging of clusters, variable stars, nebulae, and extragalactic objects. Their scientific productivity is competitive with the 4m and 2.1m telescopes. Subscription rates indicate that when advanced instrumentation is made available on a small telescope, the demand will increase significantly.

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47

Crawford, David L. "A Global Network of Small Telescopes as a Resource for Astronomical Research and Education." Highlights of Astronomy 11, no. 2 (1998): 923–26. http://dx.doi.org/10.1017/s1539299600019171.

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Abstract (sommario):

There is no question that relatively small telescopes are powerful tools for astronomy, just as they always have been. With the new detectors and full usage of computers, they have become even more powerful, enabling us to do with a one-meter aperture telescope today more than 4-meter or 5-meter telescopes could do only a few decades ago. And the small ones cost a lot less to build and operate than the large ones. As such, small telescopes are the main hope for observing time for the many astronomers worldwide who need them as part of their research (or educational) tools. They can make a majo

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48

Hippler, Stefan. "Adaptive Optics for Extremely Large Telescopes." Journal of Astronomical Instrumentation 08, no. 02 (2019): 1950001. http://dx.doi.org/10.1142/s2251171719500016.

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Abstract (sommario):

Adaptive Optics (AO) has become a key technology for the largest ground-based telescopes currently under, or close to beginning of, construction. AO is an indispensable component and has basically only one task, that is to operate the telescope at its maximum angular resolution, without optical degradations resulting from atmospheric seeing. Based on three decades of experience using AO usually as an add-on component, all extremely large telescopes and their instrumentation are designed for diffraction limited observations from the very beginning. This paper illuminates various approaches of t

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49

Zhang, Yajie, Ce Yu, Chao Sun, et al. "A Multilevel Scheduling Framework for Distributed Time-domain Large-area Sky Survey Telescope Array." Astronomical Journal 165, no. 3 (2023): 77. http://dx.doi.org/10.3847/1538-3881/acac24.

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Abstract (sommario):

Abstract Telescope arrays are receiving increasing attention due to their promise of higher resource utilization, greater sky survey area, and higher frequency of full space-time monitoring than single telescopes. Compared with the ordinary coordinated operation of several telescopes, the new astronomical observation mode has an order of magnitude difference in the number of telescopes. It requires efficient coordinated observation by large-domain telescopes distributed at different sites. Coherent modeling of various abstract environmental constraints is essential for responding to multiple c

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50

Wang, Jing-Sheng. "Newly Installed Radio and Optical Telescopes in China." Publications of the Astronomical Society of Australia 9, no. 1 (1991): 60–61. http://dx.doi.org/10.1017/s1323358000024899.

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Abstract (sommario):

AbstractNew radio and optical telescopes installed in recent years in China are summarised. These include the 2.16-m optical telescope, the solar magnetic field telescope, the Miyun synthesis radio telescope, the 1.26-m infrared telescope (Beijing Astronomical Observatory), the 25-m radio telescope as the first station of China’s VLBI network, the 1.56-m astrometric telescope (Shanghai Observatory), and the 13.7-m millimetre wave radio telescope.

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