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 …
Refracting Telescope - an overview | ScienceDirect Topics
A Newtonian reflecting telescope. In order that the rays be brought to a proper focus in a reflecting telescope, the main mirror must be in the shape of a paraboloid, a surface generated by …
Cassegrain Telescopes - an overview | ScienceDirect Topics
A Cassegrain telescope is defined as a type of reflecting telescope that utilizes a primary mirror and a secondary mirror to focus light, allowing for a compact design and efficient optical …
Towards robotic on-orbit assembly of large space telescopes: …
Nov 1, 2024 · The Hubble Space Telescope (HST) and James Webb Space Telescope (JWST) are two prominent modern-day space telescopes; the latter is one of the first to employ a …
Improved performance of three mirror anastigmat telescope with …
Oct 1, 2024 · "In this paper, the optical design of a Three Mirror Anastigmat (TMA) Telescope is modified by substitution of a convex freeform secondary and optimiz…
On the nature of thin films of speculum metal - ScienceDirect
Sep 1, 2018 · The combined use of AFM and XRD analyses at the reflecting surface of cast and thin film form of material samples reveal the presence of a thin, transparent layer called ‘Beilby …
Analysis and reduction of back-reflection straylight in laser ranging ...
Aug 1, 2024 · The optical structure of the telescope system is illustrated in Fig. 2. However, due to the design of the coaxial telescope and the shared optical path for the laser emitting and …
Leonard and Thomas Digges - ScienceDirect
Jun 1, 1992 · Leonard by his invention of an actual reflecting telescope, and prob- ably the refractor also, Thomas not only by promoting it but also by his own use of it on the heavens …
Compact off-axis reflective optical system design combining …
Aug 15, 2024 · Combining freeform mirror and freeform detector allows off-axis reflective optical systems to achieve greater compactness.
On the nature of thin films of speculum metal - ScienceDirect
Sep 1, 2018 · Highlights Detailed microstructure of reflecting portion of a speculum metal. Preparation and characterization of thin films of speculum metal using XRD and AFM …