optical telescope

More on tracking contradictions: Optical telescope example

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TRAIL: Theory and best practices for the Webel Parsing Analysis recipe for SysMLv1.6+

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SysML Block Definition Diagram (BDD)

Overview of major Package Diagrams for the optical telescopes model

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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The classic Cassegrain telescope has a parabolic primary mirror and a hyperbolic secondary mirror

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Block Definition Diagram (BDD)

The Newtonian telescope has flat secondary mirror and a paraboloid or spherical primary mirror

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Block Definition Diagram (BDD)

The overall focal ratio of the complete telescope will be f/8 and the optical prescription is an aplanatic Gregorian telescope.

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Diagram of the lightpath through a Gregorian telescope.

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The Gregorian telescope employs a concave secondary mirror that reflects the image back through a hole in the primary mirror.

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Block Definition Diagram (BDD)

A curved primary mirror is the reflector telescope's basic optical element

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Block Definition Diagram (BDD)

In a prime focus design no secondary optics are used, the image is accessed at the focal point of the primary mirror.

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The Gregorian telescope consists of two concave mirrors; the primary mirror (a concave paraboloid) collects the light and brings it to a focus before the secondary mirror (a concave ellipsoid) where it is reflected back through a hole in the centre ...

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A segmented mirror is an array of smaller mirrors designed to act as segments of a single large curved mirror. ... They are used as objectives for large reflecting telescopes.

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It is free of coma and spherical aberration at a nearly flat focal plane if the primary and secondary curvature are properly figured.

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The Ritchey–Chrétien telescope ... is a specialized Cassegrain reflector which has two hyperbolic mirrors (instead of a parabolic primary).

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The cassegrain telescope (sometimes called the "Classic Cassegrain") ... has a parabolic primary mirror, and a hyperbolic secondary mirror that reflects the light back down through a hole in the primary.

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A flat secondary mirror reflects the light to a focal plane at the side of the top of the telescope tube.

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The Newtonian telescope ... usually has a paraboloid primary mirror but at focal ratios of f/8 or longer a spherical primary mirror can be sufficient for high visual resolution.

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There are several large modern telescopes that use a Gregorian configuration such as the Vatican Advanced Technology Telescope, the Magellan telescopes, the Large Binocular Telescope, and the Giant Magellan Telescope.

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The Gregorian telescope ... employs a concave secondary mirror that reflects the image back through a hole in the primary mirror. This produces an upright image

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A curved primary mirror is the reflector telescope's basic optical element that creates an image at the focal plane [OF THE PRIMARY IF THERE IS NO SECONDARY]. The distance from the mirror to the focal plane is called the focal length.

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This image may be ... viewed through an eyepiece, which acts like a magnifying glass. The eye then sees an inverted magnified virtual image of the object.

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KeplerianRefractor: simple image flow model: context IBD with itemProperty

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Internal Block Diagram (IBD)

KeplerianRefractor: simple image flow model: staging BDD

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Block Definition Diagram (BDD)

SimpleOpticalTelescope light flow model: staging BDD and context IBD

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Block Definition Diagram (BDD)

SysML Internal Block Diagram (IBD)

This image may be ... viewed through an eyepiece, which acts like a magnifying glass. The eye then sees a ... magnified virtual image of the object.

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IBD of a SimpleOpticalTelescope in context with some relationships

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Internal Block Diagram (IBD)

The basic scheme of an optical telescope: Keplerian refractor

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Block Definition Diagram (BDD)

Schematic of a Keplerian refracting telescope. The arrow at (4) is a (notional) representation of the original image; the arrow at (5) is the inverted image at the focal plane; the arrow at (6) is the virtual image that forms in the viewer's visual sphere

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An object infinitely far from the optical system forms an image at the rear focal plane

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Block Definition Diagram (BDD)

Optics: real images vs virtual images and focus points

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Block Definition Diagram (BDD)

Most (but not all) telescope designs produce an inverted image at the focal plane

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Block Definition Diagram (BDD)

An eyepiece is a type of lens that is attached to a variety of optical devices such as telescopes and microscopes.

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Block Definition Diagram (BDD)

Objectives can be a single lens or mirror, or combinations of several optical elements.

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The objective is the optical element that gathers light from the object being observed and focuses the light rays

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Block Definition Diagram (BDD)

For example, in a telescope, the aperture stop is typically the edges of the objective lens or mirror (or of the mount that holds it). One then speaks of a telescope as having, for example, a 100-centimeter aperture.

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In some contexts, especially in photography and astronomy, aperture refers to the diameter of the aperture stop rather than the physical stop or the opening itself.

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A telescope's ability to resolve small detail is directly related to the diameter (or aperture) of its objective (the primary lens or mirror that collects and focuses the light), and its light gathering power is related to the area of the objective.

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There are telescope designs that do not present an inverted image such as the Galilean refractor and the Gregorian reflector. These are referred to as erecting telescopes.

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Most telescope designs produce an inverted image at the focal plane; these are referred to as inverting telescopes.

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This image may be recorded or viewed through an eyepiece, which acts like a magnifying glass. The eye then sees an inverted [DISPUTED] magnified virtual image of the object.

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The basic scheme is that the primary light-gathering element, the objective (the convex lens or concave mirror used to gather the incoming light), focuses that light from the distant object to a focal plane where it forms a real image.

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Optical images, image sensors, image data

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Package Diagram

An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.

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An optical telescope is a telescope that gathers and focuses light mainly from the visible part of the electromagnetic spectrum

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Tutorial

TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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SysML Block Definition Diagram (BDD)

A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image.

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In the 20th century, many new types of telescopes were invented, including radio telescopes in the 1930s and infrared telescopes in the 1960s.

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The reflecting telescope, which uses mirrors to collect and focus light, was invented within a few decades of the first refracting telescope.

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They were used for both terrestrial applications and astronomy.

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The first known practical telescopes were refracting telescopes invented in the Netherlands at the beginning of the 17th century, by using glass lenses.

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The word telescope now refers to a wide range of instruments capable of detecting different regions of the electromagnetic spectrum, and in some cases other types of detectors.

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A telescope is an optical instrument using lenses, curved mirrors [DISPUTED], or a combination of both to observe distant objects ...

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TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model

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Our first Parsing Analysis diagram about telescopes

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Giant Magellan Telescope (GMT) zone

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A Systems Modeling Language v1 (SysML^®) port-based light flow model of the Giant Magellan Telescope (GMT) was created as part of work for the Advanced Instrumentation and Technology Centre (AITC) within the Research School of Astronomy and Astrophysics of the Australian National University (ANU) in late 2018.

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