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Focusing Diffraction Optics for Orbital Telescopes
AbstractThe review is devoted to the principles, state of the art and problems of diffractive optics used to focus X-ray and γ-radiation in...
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Grazing-Incidence Focusing Optics for X-Ray Telescopes (Review)
AbstractThis review is devoted to the principles, state of the art, and problems of grazing-incidence optics for focusing soft X-ray radiation, which...
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Miniature X-ray Optics for Meter-Class Focal Length Telescopes
X-ray optics in great observatories such as Chandra X-ray Observatory and XMM-Newton have revolutionized not only X-ray astronomy but also astronomy...
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Gamma-ray astronomy with the imaging atmospheric Cherenkov telescopes in India
Ground-based γ-ray astronomy (GRA) using atmospheric Cherenkov techniques has emerged as a mature field during the last three decades in modern...
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Stellar Spectroscopy Technique on Small- and Intermediate-Diameter Telescopes
Abstract —We briefly present the history of technical solutions aimed at improving the efficiency of spectroscopy on small- and moderate-diameter...
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Evaluating the night sky background directly from the signal images detected by the ASTRI telescopes
ASTRI-Horn is an Imaging Atmospheric Cherenkov Telescope characterized by a dual-mirror optical system with a primary mirror diameter of 4.3 m and a...
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Properties of Point-Object Images Formed by Telescopes
This chapter provides descriptions of the key statistical properties of point-object images formed by telescopes observing over extended atmospheric...
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Miniature X-Ray Optics for Meter-Class Focal Length Telescopes
X-ray optics in great observatories such as Chandra X-ray Observatory and XMM-Newton have revolutionized not only X-ray astronomy but also astronomy...
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Optical system for extremely large spectroscopic survey telescope
This article presents research work on a spectroscopic survey telescope. Our idea is as follows: for such a telescope, a pure reflecting optical...
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Early Maps and Models of Galaxies
The advances in telescopic technology and advanced survey techniques, pioneered by William and Caroline Herschel, are described along with their...
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Big Telescopes and Observatories: Hi-Tech Challenges for Great Astronomical Science
A brief historical excursus of how astronomy developed to its present-day status is presented, commenting on the main discoveries that made possible...
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The Cherenkov Telescope Array
The Cherenkov Telescope Array Observatory (CTAO) is a next-generation facility for ground-based very high-energy gamma-ray astronomy. CTAO will be...
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The Cherenkov Telescope Array
The Cherenkov Telescope Array Observatory (CTAO) is a next-generation facility for ground-based very high-energy gamma-ray astronomy. CTAO will be...
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Cosmic Peepholes: A Timeline of Astronomical Tools and Techniques
Our ever-increasing knowledge of the cosmos comes from our ever-improving telescopes and related instruments. Thanks to earlier pioneers, we are now...
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Telescope Concepts in Gamma-Ray Astronomy
This chapter outlines the general principles for the detection and characterization of high-energy γ-ray photons in the energy range from MeV to GeV....
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Detecting Gamma Rays with High Resolution and Moderate Field of View: The Air Cherenkov Technique
The Imaging Atmospheric Cherenkov technique allows us to detect very high-energy gamma rays from few tens of GeV to hundreds of TeV using...
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A Brief History of the Binocular
It will not surprise the reader to learn that the origin of the telescope is closely allied to the development of the binocular. The first primitive...
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H.E.S.S.: The High Energy Stereoscopic System
The High Energy Stereoscopic System H.E.S.S. is an array of Cherenkov Telescopes located in the Khomas Highlands in Namibia. H.E.S.S. started...
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Optical design studies for national large optical-IR telescope
A 10–12 m class national large optical-IR telescope (NLOT) is envisaged to meet the growing scientific requirements in astronomy and astrophysics....
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Active X-ray Optics for Astronomy
Active optics utilize an actuated element to improve the performance of a telescope. While active optics are now routinely used in large,...