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4 articles for “optical telescopes”
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X-ray Telescopes: Technological Developments and Contributions to High-Energy Astrophysics
Abstract: X-ray telescopes have revolutionized our understanding of the high-energy universe, unveiling phenomena that are invisible to optical telescopes. This paper reviews the technological advancements in X-ray telescope design, instrumentation, and data analysis techniques, which have significantly enhanced their sensitivity and resolution. We trace the development from early X-ray detectors to modern space-based observatories like the Chandra X-ray Observatory and the XMM-Newton. These advancements have facilitated groundbreaking discoveries, such as the …
Published in International Journal of Universe · Vol. 1, Issue 1, 2025 · pp. 16–22 Read article
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An Approach for two Line Element Generation of Resident Space Objects from Radar/Optical Telescope Observations
Abstract: For safeguarding the space assets, it is imperative on our part to know about the location of Resident Space Objects (RSO) in space. Two-Line Element Sets (TLEs) are indispensable in the assessment of a RSO’s orbit in space and thereby it helps in overcoming threats to space assets by appropriate action. In the present work, we have proposed an approach to generate TLE of all the RSOs using long arc/short …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 11, Issue 3, 2022 · pp. 5–14 Read article
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Design of Thermal Actuator for Correcting Misalignment in Optics of Space Telescopes
Abstract: There are two types of actuators such as: linear actuator and rotary actuator. Basically, linear actuators are used for the actuation such as lifting, switching, moving etc. But when we use the actuator for the correction of misalignment, it requires precision in output. Recently there are many types of actuators available in market such as brushless DC motors, stepper motors, shape memory alloys, hydraulic and pneumatic actuators, piezoactuator, thermal actuators …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 6, Issue 1, 2017 · pp. 1–4 Read article
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Do Dark Galaxies Exist in the Universe?
Abstract: As huge islands of stars, gas and dust that populate the universe in groups and clusters. But the theory has predicted that some galaxies, called “dark galaxies,” have few if any stars and are made predominately of dense gas and dark matter. Because they are devoid of stars, dark galaxies have been impossible to detect directly by optical telescope until now. Some theoretical models predicted that dark galaxies were common …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 8, Issue 1, 2019 · pp. 1–3 Read article