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  1. Reflecting Telescope - an overview | ScienceDirect Topics

    A reflecting telescope is defined as an optical system that uses a concave mirror to gather and reflect light, forming a real image of distant objects, such as stars, in its focal plane. This type …

  2. Adjustment Method of Main Reflector for a Large Radio Telescope

    Jul 1, 2024 · New large diameter reflector antennas typically use a main reflector control system to quickly and easily adjust the shape of the main reflector to maintain the efficiency of the …

  3. Cassegrain Telescopes - an overview | ScienceDirect Topics

    The Schmidt-Cassegrain telescope, hereafter designated SC, is a two-mirror telescope with a corrector plate in the collimated beam, as shown in Fig. 8.1. Compared to an all-reflective …

  4. Scientific preparation for JRT: Wind pressure ... - ScienceDirect

    Sep 30, 2024 · The main methods used to study the wind load characteristics of radio telescope antenna structures encompass wind tunnel tests, numerical simulations, and field …

  5. Refracting Telescope - an overview | ScienceDirect Topics

    A refracting telescope is defined as an optical instrument that uses lenses to bend light and form images, characterized by a larger field of view, stable quality of star images, and minimal …

  6. A novel design for giant radio telescopes with an active spherical …

    Jul 1, 1998 · A novel design for giant radio telescopes is proposed. Instead of using a complex feed system for the correction of spherical aberration (such as the Arecibo 3-reflector system), …

  7. Absolute reflectance of a concave mirror used for astro-particle ...

    Feb 1, 2019 · The absolute reflectance of a reflector and its point spread function are the key parameters of a telescope for measuring light flux. Typically, one is using low-cost …

  8. Cassegrain - an overview | ScienceDirect Topics

    Cassegrain Reflector Another very common type of antenna is the Cassegrain reflector derived from the telescope design by William Cassegrain. It is the same basic antenna as the prime …

  9. Construction Progress of the FAST Project - ScienceDirect

    Jul 1, 2017 · A unique karst depression in Guizhou Province has been selected as the site to build an active reflector radio telescope with a diameter of 500 m and to realize the large sky …

  10. Correction Method of Antenna Pointing Error Caused by the Main ...

    Apr 1, 2021 · In order to express clearly the structure pointing matched with the deformed antenna main reflector, the antenna reflector coordinate system is built as shown in Fig. 2. …