Exploring the cosmos
... Antony Hewish used this model to teach people about pulsars – the new kind of star he and Jocelyn Bell discovered in 1967. The orange ball at the centre represents a neutron star, the incredibly dense remnant of a supernova explosion. The curved wires show magnetic field lines. The foil tubes repres ...
... Antony Hewish used this model to teach people about pulsars – the new kind of star he and Jocelyn Bell discovered in 1967. The orange ball at the centre represents a neutron star, the incredibly dense remnant of a supernova explosion. The curved wires show magnetic field lines. The foil tubes repres ...
TELESCOPES - GeoEcoGeo.com
... Why are reflecting telescopes generally considered better than refracting telescopes for astronomy? 8. What is SETI and what kinds of telescopes do they use? 9. Describe the Hubble Space Telescope. 10. Why haven't we built a telescope that is capable of seeing everything in the universe? 11. How doe ...
... Why are reflecting telescopes generally considered better than refracting telescopes for astronomy? 8. What is SETI and what kinds of telescopes do they use? 9. Describe the Hubble Space Telescope. 10. Why haven't we built a telescope that is capable of seeing everything in the universe? 11. How doe ...
The Future of Astronomy in Hawai i
... Scan the sky rapidly, and with sensitivity to detect faint objects – Detect asteroids, comets multiple times and determine orbits – See if any will collide in next century or so – Can’t be done with existing telescopes Can detect faint objects, but can’t cover sky area rapidly ...
... Scan the sky rapidly, and with sensitivity to detect faint objects – Detect asteroids, comets multiple times and determine orbits – See if any will collide in next century or so – Can’t be done with existing telescopes Can detect faint objects, but can’t cover sky area rapidly ...
What is a galaxy - University of Melbourne
... ★ Cosmic origin theme: ★ Where are we coming from? ...
... ★ Cosmic origin theme: ★ Where are we coming from? ...
Big Island Discussions II 08 03 06 - Alt
... avoid twisting the bottom section of the OTA. In azimuth, we first considered using off-the-shelf slim line bearings, but if one were to avoid fork flexures, it would be good to bring the forces straight down from the altitude bearings to the azimuth rotation surface and hence to a cylindrical pier. ...
... avoid twisting the bottom section of the OTA. In azimuth, we first considered using off-the-shelf slim line bearings, but if one were to avoid fork flexures, it would be good to bring the forces straight down from the altitude bearings to the azimuth rotation surface and hence to a cylindrical pier. ...
Who actually invented the astronomical telescope?
... Thomas Harriot was an scientist and astronomer living in Oxford. He was at one point a cartographer on an expedition organized by Sir Walter Raleigh. He may have been the first person to use the telescope to do astronomy. The English astronomer Thomas Harriot is not well know throughout the world t ...
... Thomas Harriot was an scientist and astronomer living in Oxford. He was at one point a cartographer on an expedition organized by Sir Walter Raleigh. He may have been the first person to use the telescope to do astronomy. The English astronomer Thomas Harriot is not well know throughout the world t ...
RTF - Cosmic Adventures Traveling Planetarium
... recognize? Can you tell what it is?' When the student is done describing the image, have him/her take off the goggles to see the image clearly. Repeat one or more times with different students and images. Discuss any challenges the students had with this activity. B) Ask students if they have ever n ...
... recognize? Can you tell what it is?' When the student is done describing the image, have him/her take off the goggles to see the image clearly. Repeat one or more times with different students and images. Discuss any challenges the students had with this activity. B) Ask students if they have ever n ...
Optics and Telescopes
... aberration, glass defects, and distortion by weight. Reflecting telescopes (reflectors) form images by reflecting light rays to the focus from curves mirrors, most used in modern astronomy. Theoretically, a telescope’s diffraction limited angular resolution depends on the diameter of the objec ...
... aberration, glass defects, and distortion by weight. Reflecting telescopes (reflectors) form images by reflecting light rays to the focus from curves mirrors, most used in modern astronomy. Theoretically, a telescope’s diffraction limited angular resolution depends on the diameter of the objec ...
Observing the Sky
... solar system and the stars in our galaxy are moving at different speeds as they revolve around the Milky Way. In addition, because the stars are at varying distance from the Earth, they appear to move in the sky at different speeds, a phenomenon known as parallax. Thus, a hundred thousand years ago, ...
... solar system and the stars in our galaxy are moving at different speeds as they revolve around the Milky Way. In addition, because the stars are at varying distance from the Earth, they appear to move in the sky at different speeds, a phenomenon known as parallax. Thus, a hundred thousand years ago, ...
Radio Telescopes
... • Light gathered by the telescopes on Earth is affected by the atmosphere. • Pollution and light from large cities causes faint objects to be less visible. • For this reason optical telescopes are placed on mountaintops where pollution and lights are less visible. ...
... • Light gathered by the telescopes on Earth is affected by the atmosphere. • Pollution and light from large cities causes faint objects to be less visible. • For this reason optical telescopes are placed on mountaintops where pollution and lights are less visible. ...
Introduction to Telescopes
... rotates) around the axis that connects the north and south celestial poles. At the latitude of Brown University, the pole star is at an altitude of approximately 41 degrees. Suppose that we would like our telescope to be able to track the motions of the stars as trace giant circles around the pole s ...
... rotates) around the axis that connects the north and south celestial poles. At the latitude of Brown University, the pole star is at an altitude of approximately 41 degrees. Suppose that we would like our telescope to be able to track the motions of the stars as trace giant circles around the pole s ...
Thibou Page 1 of 6 Telescopic Analysis of Tomorrow: Advances in
... other things with its completion scheduled for the 2020s (Andersen 202). Also the supercomputer that translates the primitive radio data from LOFAR into an image may be upgraded and used for the Square Kilometer Array in Australia or South Africa, which will have upgraded radio antennae, by the 2020 ...
... other things with its completion scheduled for the 2020s (Andersen 202). Also the supercomputer that translates the primitive radio data from LOFAR into an image may be upgraded and used for the Square Kilometer Array in Australia or South Africa, which will have upgraded radio antennae, by the 2020 ...
An adaptively corrected composite material telescope
... next generation of astronomical discoveries. Over the last century the development of the 1.5- and 2.5m telescopes at Mount Wilson Observatory, the 5m at Palomar Observatory, and so on through to the 10m Keck telescopes, have led to new discoveries based on the increase in telescope aperture. The Hu ...
... next generation of astronomical discoveries. Over the last century the development of the 1.5- and 2.5m telescopes at Mount Wilson Observatory, the 5m at Palomar Observatory, and so on through to the 10m Keck telescopes, have led to new discoveries based on the increase in telescope aperture. The Hu ...
Optics
... Intensity of visible (0.4 - 0.6 micron) light from a photographic survey. Due to the strong obscuring effect of interstellar dust,the light is primarily from stars within a few thousand light-years of the Sun, nearby on the scale of the Milky Way. The widespread bright red regions are produced by gl ...
... Intensity of visible (0.4 - 0.6 micron) light from a photographic survey. Due to the strong obscuring effect of interstellar dust,the light is primarily from stars within a few thousand light-years of the Sun, nearby on the scale of the Milky Way. The widespread bright red regions are produced by gl ...
Universal redshift, the Hubble constant The cosmic background
... The fine structure of thespatial fluctuations, two order of magnitude weaker, is the picture of the Universe when the last scattering happened. ...
... The fine structure of thespatial fluctuations, two order of magnitude weaker, is the picture of the Universe when the last scattering happened. ...
Document
... • To perform high S/N imaging of lensing B-polarization, one must increase the survey speed by 102. • The ground based platforms (DASI “drum”, SPT) will be maxed out already in the current round of exp. ...
... • To perform high S/N imaging of lensing B-polarization, one must increase the survey speed by 102. • The ground based platforms (DASI “drum”, SPT) will be maxed out already in the current round of exp. ...
4b Telescopes
... ESO (European Southern Observatory) has constructed 4 giant telescopes in the north of Chile. This image represents one of the telescopes. The mirror of the instrument weighs 23 tonnes, so imagine how large it must be! Click ...
... ESO (European Southern Observatory) has constructed 4 giant telescopes in the north of Chile. This image represents one of the telescopes. The mirror of the instrument weighs 23 tonnes, so imagine how large it must be! Click ...
Ay122a Final Exam – Fall 2012
... to astronomy and describe some challenges and areas where improvements are still needed for the next generation of AO. 2. Spectrograph Parameters. a) Suppose you have a 6.5m telescope with an f/1 primary mirror, and an f/9 Cassegrain focus. What is the native plate scale (in arc seconds per mm) at t ...
... to astronomy and describe some challenges and areas where improvements are still needed for the next generation of AO. 2. Spectrograph Parameters. a) Suppose you have a 6.5m telescope with an f/1 primary mirror, and an f/9 Cassegrain focus. What is the native plate scale (in arc seconds per mm) at t ...
Choosing a Telescope - St. Petersburg Astronomy Club
... There are now computer-controlled mountings, which do away with all this fiddling. These mountings have optical encoders on their axes, which give a digital readout of which direction the telescope is pointing. They are also equipped with purpose-built computerized handsets that are pre-programmed ...
... There are now computer-controlled mountings, which do away with all this fiddling. These mountings have optical encoders on their axes, which give a digital readout of which direction the telescope is pointing. They are also equipped with purpose-built computerized handsets that are pre-programmed ...
Synopsis by Rachel Haynes
... pick up and say, “This is a telescope.” They differ in their application, and thus have different designs based on the desired function. Some use lenses (refractive or transmissive telescopes) while others use mirrors (relfective telescopes), and some even use both. Some have 1 mirror, while others ...
... pick up and say, “This is a telescope.” They differ in their application, and thus have different designs based on the desired function. Some use lenses (refractive or transmissive telescopes) while others use mirrors (relfective telescopes), and some even use both. Some have 1 mirror, while others ...
Earth`s Atmosphere & Telescopes
... atmosphere blocks X-rays from reaching the ground. • X-rays are very difficult to focus because they can so easily pass through most materials. • X-ray telescopes do not generate X-rays they only detect the Xrays generated by stars, planets, galaxies, black holes, etc. ...
... atmosphere blocks X-rays from reaching the ground. • X-rays are very difficult to focus because they can so easily pass through most materials. • X-ray telescopes do not generate X-rays they only detect the Xrays generated by stars, planets, galaxies, black holes, etc. ...
The Observable Universe: Redshift, Distances and the Hubble-Law
... • Most of galaxies and all Quasars have redshifted Spectra (cosmological redshift, not gravitational). • Hubble found: cz = H0 d , z < 0,1. • The Hubble Constant has to be calibrated: Cepheids and SN-Methods are nowadays the most important Distance Indicators: H0 = 72+/-5 km/s/Mpc. • Hubble-Law can ...
... • Most of galaxies and all Quasars have redshifted Spectra (cosmological redshift, not gravitational). • Hubble found: cz = H0 d , z < 0,1. • The Hubble Constant has to be calibrated: Cepheids and SN-Methods are nowadays the most important Distance Indicators: H0 = 72+/-5 km/s/Mpc. • Hubble-Law can ...
Hubble Space Telescope
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990, and remains in operation. With a 2.4-meter (7.9 ft) mirror, Hubble's four main instruments observe in the near ultraviolet, visible, and near infrared spectra. The telescope is named after the astronomer Edwin Hubble.Hubble's orbit outside the distortion of Earth's atmosphere allows it to take extremely high-resolution images with negligible background light. Hubble has recorded some of the most detailed visible-light images ever, allowing a deep view into space and time. Many Hubble observations have led to breakthroughs in astrophysics, such as accurately determining the rate of expansion of the universe.Although not the first space telescope, Hubble is one of the largest and most versatile, and is well known as both a vital research tool and a public relations boon for astronomy. The HST was built by the United States space agency NASA, with contributions from the European Space Agency, and is operated by the Space Telescope Science Institute. The HST is one of NASA's Great Observatories, along with the Compton Gamma Ray Observatory, the Chandra X-ray Observatory, and the Spitzer Space Telescope.Space telescopes were proposed as early as 1923. Hubble was funded in the 1970s, with a proposed launch in 1983, but the project was beset by technical delays, budget problems, and the Challenger disaster. When finally launched in 1990, Hubble's main mirror was found to have been ground incorrectly, compromising the telescope's capabilities. The optics were corrected to their intended quality by a servicing mission in 1993.Hubble is the only telescope designed to be serviced in space by astronauts. After launch by Space Shuttle Discovery in 1990, four subsequent Space Shuttle missions repaired, upgraded, and replaced systems on the telescope. A fifth mission was canceled on safety grounds following the Columbia disaster. However, after spirited public discussion, NASA administrator Mike Griffin approved one final servicing mission, completed in 2009. The telescope is still operating as of 2015, and may last until 2030–2040. Its scientific successor, the James Webb Space Telescope (JWST), is scheduled for launch in 2018.