There are three main types of telescopes: refracting telescopes which use lenses, reflecting telescopes which use mirrors, and catadioptric telescopes which combine both lenses and mirrors. The first practical refracting telescope was created by Hans Lippershey in 1608. Galileo Galilei improved upon this design and used telescopes to make astronomical observations, discovering moons of Jupiter. Larger reflecting telescopes were later developed, including the 40-inch telescope at Yerkes Observatory and the first large reflecting telescope designed by James Gregory and later built by Isaac Newton. Modern telescopes often use Schmidt-Cassegrain designs and telescope mounts allow observation along axes of azimuth, altitude, right ascension, and declination.
Slope refers to the inclination of a line or surface, with positive slope indicating an upward slant, negative slope a downward slant, and zero slope being horizontal. Steeper slopes are more sharply inclined while flatter slopes are more gently inclined, and undefined vertical slopes have no slope.
This document discusses several technological advancements that have enabled the development of space exploration, beginning with Galileo's telescope in 1609. It provides examples like the Hubble Space Telescope, Sputnik satellite from 1957, Voyager 1 spacecraft, and early space stations compared to more advanced stations today. The document emphasizes that spinoffs from space programs have significantly improved modern life.
This document provides a summary of key concepts in astronomy and space exploration in 3 sentences:
The Earth and other objects in our solar system orbit the Sun, which is one of hundreds of billions of stars in our Milky Way galaxy. Our galaxy is one of trillions in the observable universe, which originated billions of years ago in a massive expansion known as the Big Bang. Rockets use multistage designs and thrust from reactions involving fuel and oxidizers to overcome gravity and reach orbit or beyond, while satellites circle Earth providing applications like weather monitoring, communications, and scientific research.
Slope refers to the inclination of a line or surface, with positive slope indicating an upward slant, negative slope a downward slant, and zero slope being horizontal. Steeper slopes are more sharply inclined while flatter slopes are more gently inclined, and undefined vertical slopes have no slope.
This document discusses several technological advancements that have enabled the development of space exploration, beginning with Galileo's telescope in 1609. It provides examples like the Hubble Space Telescope, Sputnik satellite from 1957, Voyager 1 spacecraft, and early space stations compared to more advanced stations today. The document emphasizes that spinoffs from space programs have significantly improved modern life.
This document provides a summary of key concepts in astronomy and space exploration in 3 sentences:
The Earth and other objects in our solar system orbit the Sun, which is one of hundreds of billions of stars in our Milky Way galaxy. Our galaxy is one of trillions in the observable universe, which originated billions of years ago in a massive expansion known as the Big Bang. Rockets use multistage designs and thrust from reactions involving fuel and oxidizers to overcome gravity and reach orbit or beyond, while satellites circle Earth providing applications like weather monitoring, communications, and scientific research.
The document discusses two main types of telescopes - refracting and reflecting. A refracting telescope uses two lenses, a large objective lens that collects light and forms a real image, and an eyepiece lens that magnifies this image for viewing. A reflecting telescope uses a concave mirror instead of an objective lens, collecting light via reflection rather than refraction. Reflecting telescopes are commonly used for large astronomical telescopes as mirrors can be made larger than lenses.
There are two main types of telescopes: Keplerian/astronomical telescopes and Galilean telescopes. Keplerian telescopes produce an inverted image while Galilean telescopes produce an upright image. Telescopes can be modified to compensate for refractive errors by adding lenses or changing the tube length to allow viewing of objects that are not at optical infinity.
This document provides an overview of different types of telescopes, including refracting and reflecting telescopes, and discusses issues like aberration and how they are addressed. It also covers how telescopes are used to view fainter objects, the limits of angular resolution, and advanced optical telescope designs like the Cassegrain, catadioptric, and Schmidt telescopes. In particular, it notes that refracting telescopes can experience chromatic aberration which can be addressed using an achromatic lens, while reflecting telescopes are prone to spherical aberration addressed using a parabolic mirror.
This presentation was provided by Racquel Jemison, Ph.D., Christina MacLaughlin, Ph.D., and Paulomi Majumder. Ph.D., all of the American Chemical Society, for the second session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session Two: 'Expanding Pathways to Publishing Careers,' was held June 13, 2024.
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptxEduSkills OECD
Iván Bornacelly, Policy Analyst at the OECD Centre for Skills, OECD, presents at the webinar 'Tackling job market gaps with a skills-first approach' on 12 June 2024
The document discusses two main types of telescopes - refracting and reflecting. A refracting telescope uses two lenses, a large objective lens that collects light and forms a real image, and an eyepiece lens that magnifies this image for viewing. A reflecting telescope uses a concave mirror instead of an objective lens, collecting light via reflection rather than refraction. Reflecting telescopes are commonly used for large astronomical telescopes as mirrors can be made larger than lenses.
There are two main types of telescopes: Keplerian/astronomical telescopes and Galilean telescopes. Keplerian telescopes produce an inverted image while Galilean telescopes produce an upright image. Telescopes can be modified to compensate for refractive errors by adding lenses or changing the tube length to allow viewing of objects that are not at optical infinity.
This document provides an overview of different types of telescopes, including refracting and reflecting telescopes, and discusses issues like aberration and how they are addressed. It also covers how telescopes are used to view fainter objects, the limits of angular resolution, and advanced optical telescope designs like the Cassegrain, catadioptric, and Schmidt telescopes. In particular, it notes that refracting telescopes can experience chromatic aberration which can be addressed using an achromatic lens, while reflecting telescopes are prone to spherical aberration addressed using a parabolic mirror.
This presentation was provided by Racquel Jemison, Ph.D., Christina MacLaughlin, Ph.D., and Paulomi Majumder. Ph.D., all of the American Chemical Society, for the second session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session Two: 'Expanding Pathways to Publishing Careers,' was held June 13, 2024.
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptxEduSkills OECD
Iván Bornacelly, Policy Analyst at the OECD Centre for Skills, OECD, presents at the webinar 'Tackling job market gaps with a skills-first approach' on 12 June 2024
Andreas Schleicher presents PISA 2022 Volume III - Creative Thinking - 18 Jun...EduSkills OECD
Andreas Schleicher, Director of Education and Skills at the OECD presents at the launch of PISA 2022 Volume III - Creative Minds, Creative Schools on 18 June 2024.
