Posts Tagged ‘telescopes’
Starship of Choice
August 21st, 2010 | 
Author: 
Ed Rice discusses the joy of astronomy and using his new Meade MaxMount 20″ telescope.
Duration : 0:2:50
Posted in meade telescope | 
Tags: astronomy, Ed Rice, Gary Creason, MaxMount, Meade, Meade Instruments, Meade telescopes, science, Star Gazing, telescope, telescopes | 
No Comments »
Telescopes beyond Celestron, Orion, Dobsonian, Newtonian
http://www.VickiWittenstein.com Imagine an Earth like planet orbiting beyond our solar system in the Milky Way, detected with the help of a powerful space or ground telescope like Keck, Hubble, and Kepler. A new kids’ book about planets, astronomy and space, Planet Hunter tells the story of how astronomer Geoff Marcy and other astronomers use telescopes and innovative techniques to hunt for extraterrestrial planets. Author Vicki Wittenstein.
Duration : 0:2:25
Posted in orion telescope |
Tags: astronomy, children s book, Keck, Kepler, milky way, NASA, NSS, outer space, Planet Hunter, Planets, science curriculum, seti, solar system, telescopes, Vicki Wittenstein |
No Comments »
Very Large Telescope
Every night, all year round, the ESO Very Large telescope, or VLT, opens its four giant eyes to scrutinise the beautiful southern skies. Each eye is a huge mirror, 8.2 metres in diameter, that gathers the light of the night sky, and reflects it into optical systems that form ultra-sharp images of the Universe. But keeping the VLT’s eyes clear requires each mirror to be cleaned and recoated occasionally, a delicate and complex procedure.
Duration : 0:10:31
Hubble’s Successor: The James Webb Space Telescope
Science@ESA (Episode 4): Following The Redshift (Part 2) – Hubble’s Successor: The James Webb Space Telescope.
In this fourth episode of the Science@ESA vodcast series Rebecca Barnes will identify some of the key discoveries achieved with the famous Hubble Space Telescope, look at the concept of redshift, and meet a new telescope that will be used to uncover the early Universe.
—
Subscribe to Science & Reason:
• http://www.youtube.com/Best0fScience
• http://www.youtube.com/ScienceMagazine
• http://www.youtube.com/FFreeThinker
—
Named in 2002 in honour of NASA’s administrator during the Apollo programme, the James Webb Space Telescope (JWST) mission is a collaborative project between the National Aeronautics and Space Administration, the European Space Agency and the Canadian Space Agency.
JWST will address many of the outstanding issues of modern astronomy related to the ‘Early Universe’ and is expected to yield scientific breakthroughs as did its predecessor, the Hubble Space Telescope. JWST will be a general-purpose observatory with a suite of astronomical infrared-sensitive instruments.
Compared to existing or planned observatories, JWST will have the unique advantage of combining superb image quality throughout a wide wavelength range, a wide field of view and unparalleled photon sensitivity due to its 6.5-metre diameter telescope primary mirror.
http://sci.esa.int/science-e/www/area/index.cfm?fareaid=29
—
The James Webb Space Telescope (JWST) is a planned infrared space observatory, the partial successor to the aging Hubble Space Telescope. The JWST will not be a complete successor, because it will not be sensitive to all of the light wavelengths that Hubble can see.
The main scientific goal is to observe the most distant objects in the universe, those beyond the reach of either ground based instruments or the Hubble. The JWST project is a NASA-led international collaboration with contributors in fifteen nations, the European Space Agency (ESA) and the Canadian Space Agency (CSA).
Originally called the Next Generation Space Telescope (NGST), it was renamed in 2002 after NASA’s second administrator, James E. Webb (1906-1992). Webb had headed NASA from the beginning of the Kennedy administration through the Johnson administration (1961-68), thus overseeing all the manned launches in the Mercury through Gemini programs, until just before the first manned Apollo flight.
Current plans call for the telescope to be launched on an Ariane 5 rocket in June 2014, on a five-year mission (10 year goal). The JWST will reside in solar orbit near the Sun-Earth L2 point, which is on a line passing from the Sun to the Earth, but about 1.5 million km farther away from the Sun than is the Earth.
This position, which moves around the Sun in exact orbital synchrony with the Earth, will allow JWST to shield itself from infrared from both Sun and Earth, by using a single radiation shield positioned between the telescope and the Sun-Earth direction.
http://en.wikipedia.org/wiki/James_Webb_Space_telescope
.
Duration : 0:6:42
telescope collimation – how to collimate telescope
Step by Step instructions on how to collimate a Newtonian telescope. Reflector telescopes need regular adjustment and this process is easy with a laser collimator.
Duration : 0:7:59
Posted in telescope |
Tags: collimate, collimation, collimator, laser, telescope, telescopes |
21 Comments »
How to Buy a Telescope : Telescope Buying Guide: Dobsonian Mounts
Dobsonian telescope mounts are commonly used for reflecting telescopes or Newtonian telescopes. Learn about Dobsonian mounts for telescopes in this free video on home astronomy from a telescope salesperson.
Expert: Jesse Sturgeon
Bio: Jesse Sturgeon has served as a sales and customer service representative for Anacortes Telescope in Anacortes, Wash. for several years. He enjoys introducing people to the science & art of astronomy.
Filmmaker: Curtis Enlow
Duration : 0:2:24
Hubble Space Telescope Directly Observes Exoplanet
Hubblecast 22: Hubble Space Telescope Directly Observes Exoplanet Orbiting Fomalhaut.
The NASA/ESA Hubble Space telescope has discovered an extrasolar planet, for the first time using direct visible-light imaging. The strange world is far-flung from its parent star, is surrounded by a colossal belt of gas and dust, and may even have rings more impressive than Saturn’s.
—
Subscribe to Science & Reason:
• http://www.YouTube.com/Best0fScience
• http://www.YouTube.com/ScienceMagazine
• http://www.YouTube.com/FFreeThinker
—
Credit:
- ESA/Hubble (M. Kornmesser & L. L. Christensen)
- Visual design & Editing: Martin Kornmesser
- Animations: Martin Kornmesser & Luis Calçada
- Web Hosting: Leibniz-Rechenzentrum (LRZ)
- Web Technical Support: Lars Holm Nielsen & Raquel Yumi Shida
- Written by: Lee Pullen & Lars Lindberg Christensen
- Host: Dr. J
- Narration: Bob Fosbury
- Cinematography: Peter Rixner
- Music: movetwo
- Footage and photos: A. Fujii, Digitized Sky Survey 2, NASA, ESA, and P. Kalas (University of California, Berkeley). Acknowledgment: Davide De Martin (ESA/Hubble)
- Directed by: Lars Lindberg Christensen
Dr. J is a German astronomer at the ESO. His scientific interests are in cosmology, particularly on galaxy evolution and quasars. Dr. J’s real name is Joe Liske and he has a PhD in astronomy.
Hubble European Space Agency Information Centre
Garching/Munich, Germany
• http://www.eso.org
• http://www.spacetelescope.org
• http://hubblesite.org
.
Duration : 0:5:2
Posted in telescope |
Tags: .22, astro, astronomers, astronomy, bang, big, Black, cast, Clusters, Cobe, Cosmic, dark, Deep, Directly, energy, ESA, ESO, Exoplanet, Exoplanets, Field, Fomalhaut, galaxies, Gamma, Hawking, hd, herschel, holes, Hubble, Hubblecast, images, JPL, Kepler, Large, light, Mars, matter, milky, Mission, moons, NASA, Nebulae, Observes, of, Orbiting, Physics, Planck, planet, Planets, Rays, Sagan, science, Shuttle, Solar, Space, speed, Spitzer, Stars, Station, Stellar, sun, Supernova, System, telescope, telescopes, Ultra, Universe, Very, Videos, VLT, way |
25 Comments »
How to Buy a Telescope : Telescope Buying Guide: What to Avoid
When buying a telescope, be wary of inflated magnification claims and wobbly tripods. Shop wisely for telescopes with the buying tips in this free video on home astronomy from a telescope salesperson.
Expert: Jesse Sturgeon
Bio: Jesse Sturgeon has served as a sales and customer service representative for Anacortes telescope in Anacortes, Wash. for several years. He enjoys introducing people to the science & art of astronomy.
Filmmaker: Curtis Enlow
Duration : 0:2:19
How to Use Telescopes : Schmidt-Cassegrain Telescopes
Schmidt-Cassegrain telescopes use mirrors and lenses to form a telescope incorporating Newtonian mirrors and a redirecting lens. Study Schmidt-Cassegrain telescopes with an observatory director in this free astronomy video.
Expert: Rocky Alvey & Billy Teets
Bio: Rocky Alvey is the assistant director of the Vanderbilt Dyer Observatory and has been involved in astronomy since 1969.
Filmmaker: Dimitri LaBarge
Duration : 0:1:49
Posted in telescope |
Tags: astronomy, nature, science, sky charts, star charts, telescopes |
3 Comments »
Orion In A New Light
ESOcast 14: Orion in a New Light – VISTA exposes high-speed antics of young stars.
The Orion Nebula reveals many of its hidden secrets in a dramatic image taken by ESOs new VISTA survey telescope. VISTA — the Visible and Infrared Survey Telescope for Astronomy — is the latest addition to ESOs Paranal Observatory. It is the largest survey telescope in the world and is dedicated to mapping the sky at infrared wavelengths.
The telescopes huge field of view can show the full splendour of the Orion Nebula and VISTAs infrared vision also allows it to peer deeply into dusty regions that are normally hidden and expose the curious behaviour of the very active young stars buried there.
—
Please subscribe to:
• http://www.youtube.com/Best0fScience
• http://www.youtube.com/ScienceMagazine
• http://www.youtube.com/FFreeThinker
—
The Orion Nebula lies in the sword of the famous celestial hunter and is a favourite target both for casual sky watchers and astrophysicists alike. It is faintly visible to the unaided eye and appeared to early telescopic observers as a small cluster of blue-white stars surrounded by a mysterious grey-green mist.
The object was first described in the early seventeenth century although the identity of the discoverer is uncertain. The French comet-hunter Messier made an accurate sketch of its main features in the mid-eighteenth century and gave it the number 42 in his famous catalogue. He also allocated the number 43 to the smaller detached region just above the main part of the nebula.
Later William Herschel speculated that the nebula might be the chaotic material of future suns and astronomers have since discovered that the mist is indeed gas glowing under the fierce ultraviolet light from young hot stars that have recently formed there.
—
VISTA — the Visible and Infrared Survey telescope for Astronomy — is the latest addition to ESOs Paranal Observatory. It is the largest survey telescope in the world and is dedicated to mapping the sky at infrared wavelengths. The large (4.1-metre) mirror, wide field of view and very sensitive detectors make VISTA a unique instrument. This dramatic new image of the Orion Nebula illustrates VISTAs remarkable powers.
The Orion Nebula is a vast stellar nursery lying about 1350 light-years from Earth. Although the nebula is spectacular when seen through an ordinary telescope, what can be seen using visible light is only a small part of a cloud of gas in which stars are forming.
Most of the action is deeply embedded in dust clouds and to see what is really happening astronomers need to use telescopes with detectors sensitive to the longer wavelength radiation that can penetrate the dust. VISTA has imaged the Orion Nebula at wavelengths about twice as long as can be detected by the human eye.
As in the many visible light pictures of this object, the new wide field VISTA image shows the familiar bat-like form of the nebula in the centre of the picture as well as the fascinating surrounding area.
At the very heart of this region lie the four bright stars forming the Trapezium, a group of very hot young stars pumping out fierce ultraviolet radiation that is clearing the surrounding region and making the gas glow. However, observing in the infrared allows VISTA to reveal many other young stars in this central region that cannot be seen in visible light.
Looking to the region above the centre of the picture, curious red features appear that are completely invisible except in the infrared. Many of these are very young stars that are still growing and are seen through the dusty clouds from which they form.
These youthful stars eject streams of gas with typical speeds of 700 000 km/hour and many of the red features highlight the places where these gas streams collide with the surrounding gas, causing emission from excited molecules and atoms in the gas.
There are also a few faint, red features below the Orion Nebula in the image, showing that stars form there too, but with much less vigour. These strange features are of great interest to astronomers studying the birth and youth of stars.
This new image shows the power of the VISTA telescope to image wide areas of sky quickly and deeply in the near-infrared part of the spectrum. The telescope is just starting to survey the sky and astronomers are anticipating a rich harvest of science from this unique ESO facility.
• http://www.eso.org/public/news/eso1006/
—
Credit: ESO. Acknowledgments: J. Emerson/VISTA. Visual design and editing: Martin Kornmesser. Editing: Herbert Zodet. Web and technical support: Lars Holm Nielsen and Raquel Yumi Shida. Written by: Eric Schwartz and Richard Hook. Narration: Dr J. Music: John Dyson (from the album darklight) and movetwo. Footage and photos: ESO. Directed by: Herbert Zodet. Executive producer: Lars Lindberg Christensen.
• http://www.eso.org/public/
.
Duration : 0:3:25
Posted in orion telescope |
Tags: active, astronomers, astronomy, astrophysicists, cast, earth, ESO, gas, herschel, images, infrared, light, Messier, nebula, new, observatories, orion, paranal, radiation, Space, spectrum, Stars, survey, telescopes, ultraviolet, visible, vista, Young |
25 Comments »