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A guide to Hubble Space Telescope objects : their selection, location, and significance
From the authors of \"How to Find the Apollo Landing Sites,\" this is a guide to connecting the view above with the history of recent scientific discoveries from the Hubble Space Telescope. Each selected HST photo is shown with a sky map and a photograph or drawing to illustrate where to find it and how it should appear from a backyard telescope. Here is the casual observer's chance to locate the deep space objects visually, and appreciate the historic Hubble photos in comparison to what is visible from a backyard telescope. HST objects of all types are addressed, from Messier objects, Caldwell objects, and NGC objects, and are arranged in terms of what can be seen during the seasons. Additionally, the reader is given an historical perspective on the work of Edwin Hubble, while locating and viewing the deep space objects that changed astronomy forever. Countless people have seen the amazing photographs taken by the Hubble Space Telescope. But how many people can actually point out where in the sky those objects are? Why were these objects chosen to be studied? What discoveries were made from the Hubble Space Telescope photographs? This book is for anyone who wants answers to these questions.
Book
Inside the star factory : the creation of the James Webb Space Telescope, NASA's largest and most powerful space observatory
\"Photo documentary of the creation and launch of NASA's James Webb Space Telescope (JWST), the world's largest orbiting astronomy observatory\"-- Provided by publisher.
Book
The INAF-Arcetri Astrophysical Observatory contribution to SKA-Low: technology and first observations/Il contributo dell'INAF-Osservatorio Astrofisico di Arcetri alla tecnologia ed alle prime osservazioni di SKA-Low
SKA (Square Kilometre Array), the largest and most powerful interferometric array of radio telescopes in the world in the 50 MHz to 15 GHz frequency range is currently under construction. Its unprecedented performance will revolutionize modern astrophysics starting from the next decade. The technological radioastronomical group at the INAF-Arcetri Astrophysical Observatory is actively involved in the design, development and validation of SKA-Low, the low-frequency (50-350 MHz) component of SKA. Keywords. SKA, radio telescopes, aperture arrays, calibration. SKA (Square Kilometre Array), la più estesa e potente rete interferometrica di radiotelescopi al mondo nella banda di frequenze da 50 MHz a 15 GHz, è attualmente in fase di costruzione. A partire dal prossimo decennio, le prestazioni senza precedenti di SKA rivoluzioneranno l'astrofisica moderna. Il gruppo tecnologico di radioastronomia dell'Osservatorio Astrofisico di Arcetri (INAF) contribuisce attivamente alle fasi di design, sviluppo e validazione di SKA-Low, la componente di SKA operante a bassa frequenza (50-350 MHz). Parole chiave. SKA, radiotelescopi, array di aperture, calibrazione.
Journal Article
Editorial
Shuang-Nan Zhang Principal Investigator of Insight-HXMT Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
Journal Article
The Hubble cosmos : 25 years of new vistas in space
This title celebrates NASA's Hubble Space Telescope and its 25 years of accomplishments.
Book
Thermal emission from the Earth-sized exoplanet TRAPPIST-1 b using JWST
The TRAPPIST-1 system is remarkable for its seven planets that are similar in size, mass, density and stellar heating to the rocky planets Venus, Earth and Mars in the Solar System
1
. All the TRAPPIST-1 planets have been observed with transmission spectroscopy using the Hubble or Spitzer space telescopes, but no atmospheric features have been detected or strongly constrained
2
–
5
. TRAPPIST-1 b is the closest planet to the M-dwarf star of the system, and it receives four times as much radiation as Earth receives from the Sun. This relatively large amount of stellar heating suggests that its thermal emission may be measurable. Here we present photometric secondary eclipse observations of the Earth-sized exoplanet TRAPPIST-1 b using the F1500W filter of the mid-infrared instrument on the James Webb Space Telescope (JWST). We detect the secondary eclipses in five separate observations with 8.7
σ
confidence when all data are combined. These measurements are most consistent with re-radiation of the incident flux of the TRAPPIST-1 star from only the dayside hemisphere of the planet. The most straightforward interpretation is that there is little or no planetary atmosphere redistributing radiation from the host star and also no detectable atmospheric absorption of carbon dioxide (CO
2
) or other species.
Observations from the James Webb Space Telescope suggest that the exoplanet TRAPPIST-1 b has little or no planetary atmosphere and no detectable atmospheric absorption of carbon dioxide.
Journal Article
Expanding universe : photographs from the Hubble space telescope
On the 25th anniversary of the Hubble Telescope first being launched into low earth orbit, TASCHEN brings together some of its most breathtaking deep space images. Hubble's orbit outside the Earth's atmosphere allows it to take extremely high-resolution images with almost no background light. Its acute observations have answered some of the most compelling questions of time and space, and simultaneously revealed whole new mysteries, like the strange \"dark energy\" that sees the universe expanding at an ever-accelerated rate. With investigations into everything from black holes to exoplanets, Hubble has changed not only the face of astronomy, but also our very sense of being in the universe.
Book
Scientific Performance Analysis of the SYZ Telescope Design versus the RC Telescope Design D. Ma & Z. Cai contributed equally to this paper
Recently, Su et al. propose an innovative design, referred as the \"SYZ\" design, for China's new project of a 12 m optical-infrared telescope. The SYZ telescope design consists of three aspheric mirrors with non-zero power, including a relay mirror below the primary mirror. SYZ design yields a good imaging quality and has a relatively flat field curvature at Nasmyth focus. To evaluate the science-compatibility of this three-mirror telescope, in this paper, we thoroughly compare the performance of SYZ design with that of Ritchey-Chrétien (RC) design, a conventional two-mirror telescope design. Further, we propose the Observing Information Throughput (OIT) as a metric for quantitatively evaluating the telescopes' science performance. We find that although a SYZ telescope yields a superb imaging quality over a large field of view, a two-mirror (RC) telescope design holds a higher overall throughput, a better diffraction-limited imaging quality in the central field of view (FOV < 5′) which is better for the performance of extreme Adaptive Optics (AO), and a generally better scientific performance with a higher OIT value.
Journal Article