Galaxies Galaxies M81
... • Believed to be clouds of gas and stars associated with Milky Way. • In 1924 Edwin Hubble measured distance to the “Great Nebula in Andromeda” (M 31) and found its distance to be much larger than the diameter of the Milky Way. Edwin P. Hubble (1889-1953) ...
... • Believed to be clouds of gas and stars associated with Milky Way. • In 1924 Edwin Hubble measured distance to the “Great Nebula in Andromeda” (M 31) and found its distance to be much larger than the diameter of the Milky Way. Edwin P. Hubble (1889-1953) ...
PH607lec08
... between recession velocity and distance. (Type Ia supernova). The Hubble law defines a special frame of reference at any point in the Universe. An observer with a large motion with respect to the Hubble flow would measure blueshifts in front and large redshifts behind, instead of the same redshifts ...
... between recession velocity and distance. (Type Ia supernova). The Hubble law defines a special frame of reference at any point in the Universe. An observer with a large motion with respect to the Hubble flow would measure blueshifts in front and large redshifts behind, instead of the same redshifts ...
The 1.5 meter solar telescope GREGOR
... a focal length of 2.5 m. In the primary focal plane, an image of the solar disk with a diameter of 25 mm is formed, with a total power of about 2000 W, and a flux density of about 6 MW/m2 . At this location, a water-cooled field stop (Fig. 3) deflects most of the sunlight out of the telescope, and t ...
... a focal length of 2.5 m. In the primary focal plane, an image of the solar disk with a diameter of 25 mm is formed, with a total power of about 2000 W, and a flux density of about 6 MW/m2 . At this location, a water-cooled field stop (Fig. 3) deflects most of the sunlight out of the telescope, and t ...
New Generation Ground-Based Optical/Infrared Telescopes
... sites such as Mauna Kea in Hawaii and Atacama in Chile, or to use balloons, aircraft, or spacecraft. Fourth, atmospheric seeing typically limits the sharpness of images to 0.25– 0.5 arcseconds at the best high-altitude sites. To achieve diffraction-limited imaging, one must employ special techniques ...
... sites such as Mauna Kea in Hawaii and Atacama in Chile, or to use balloons, aircraft, or spacecraft. Fourth, atmospheric seeing typically limits the sharpness of images to 0.25– 0.5 arcseconds at the best high-altitude sites. To achieve diffraction-limited imaging, one must employ special techniques ...
APOD 2016 Calendar
... Explanation: The matter in galaxy cluster 1E 0657-56, fondly known as the “bullet cluster”, is shown in this composite image. A mere 3.4 billion light-years away, the bullet cluster’s individual galaxies are seen in the optical image data, but their total mass adds up to far less than the mass of th ...
... Explanation: The matter in galaxy cluster 1E 0657-56, fondly known as the “bullet cluster”, is shown in this composite image. A mere 3.4 billion light-years away, the bullet cluster’s individual galaxies are seen in the optical image data, but their total mass adds up to far less than the mass of th ...
Choosing your first telescope - Caribbean Institute of Astronomy
... most often. Many amateur astronomers have large telescopes that they rarely use because they are too difficult to take outside, they take too long to setup, too long to cool down and are just overkill on many nights. Some amateur telescopes are so big that they require a ladder to get up to the eyep ...
... most often. Many amateur astronomers have large telescopes that they rarely use because they are too difficult to take outside, they take too long to setup, too long to cool down and are just overkill on many nights. Some amateur telescopes are so big that they require a ladder to get up to the eyep ...
Resume
... went to remote Hanle site in September 2013, and repaired the instrument by setting up a temporary clean room. Our hypothesis was proven correct after opening and inspection of the dewar. During my initial engineering run observations, 10 arcsec slits were found to be inadequate for optimal sky remo ...
... went to remote Hanle site in September 2013, and repaired the instrument by setting up a temporary clean room. Our hypothesis was proven correct after opening and inspection of the dewar. During my initial engineering run observations, 10 arcsec slits were found to be inadequate for optimal sky remo ...
User support: lessons learned from HST
... is that (1) the CS/PC team supports the observer from “cradle to grave” of the observation and (2) the team is a “single point of contact” for the observer. This means the observer can contact the CS/PC team during any phase in the life cycle of an HST program to receive assistance. It also ensures ...
... is that (1) the CS/PC team supports the observer from “cradle to grave” of the observation and (2) the team is a “single point of contact” for the observer. This means the observer can contact the CS/PC team during any phase in the life cycle of an HST program to receive assistance. It also ensures ...
Let`s Observe the Andromeda Nebula (M31)!
... in our own Milky Way galaxy or whether it exsited outside of the Milkyway Galaxy independently. In 1920, the Great Debate over this problem was held between two American astronomers: Harlow Shapley and Heber Curtis. ...
... in our own Milky Way galaxy or whether it exsited outside of the Milkyway Galaxy independently. In 1920, the Great Debate over this problem was held between two American astronomers: Harlow Shapley and Heber Curtis. ...
Moscow State University Sternberg Astronomical Institute
... Observatory Control System (OCS) which is the highest level software integrating the TCS, DCS, ACS, ECS and ICS components which allows the fully remote (via Internet) controllable system functioning and provides the user with convenient interface for observations management. ...
... Observatory Control System (OCS) which is the highest level software integrating the TCS, DCS, ACS, ECS and ICS components which allows the fully remote (via Internet) controllable system functioning and provides the user with convenient interface for observations management. ...
SST-GATE: An Innovative Telescope for the Very High
... Zemax simulation whereas the mechanicals ones have been transformed in high level technical requirements for the engineering team. However beyond these technical specifications, CTA requires to build two arrays of telescopes which, indeed, imply to take into account the environment, the array contro ...
... Zemax simulation whereas the mechanicals ones have been transformed in high level technical requirements for the engineering team. However beyond these technical specifications, CTA requires to build two arrays of telescopes which, indeed, imply to take into account the environment, the array contro ...
Standing in Awe - Auckland Astronomical Society
... rather poorly condensed globular cluster NGC 5897. The stars are faint though easily resolved with smaller telescopes. Current studies allocate a distance of 44,800 light years from the Earth. ...
... rather poorly condensed globular cluster NGC 5897. The stars are faint though easily resolved with smaller telescopes. Current studies allocate a distance of 44,800 light years from the Earth. ...
The Hobby-Eberly Telescope: performance
... tracker at prime focus to follow astronomical objects. The telescope was constructed for $13.9M over the period 1994-1997. A series of extensive engineering upgrades and corrective actions have been completed recently, resulting in significantly improved delivered image quality and increased operati ...
... tracker at prime focus to follow astronomical objects. The telescope was constructed for $13.9M over the period 1994-1997. A series of extensive engineering upgrades and corrective actions have been completed recently, resulting in significantly improved delivered image quality and increased operati ...
In-the-Spectacle-Lens Telescopic Device for Low Vision
... visually impaired people reject them 1. The obvious and unsightly appearance of these prosthetic devices has been identified as one major reason for the reluctance of the visually impaired to use bioptic telescopes. Previous attempts to improve the cosmetic appearance of bioptic telescopes include t ...
... visually impaired people reject them 1. The obvious and unsightly appearance of these prosthetic devices has been identified as one major reason for the reluctance of the visually impaired to use bioptic telescopes. Previous attempts to improve the cosmetic appearance of bioptic telescopes include t ...
o - Salem State University
... night we move to a location on Earth that is some significant distance from our first location. There will now be a different star at or on: a. the celestial north pole b. the zenith c. the celestial equator d. the celestial south pole e. all of the above 2. A very odd friend of yours (living in Sal ...
... night we move to a location on Earth that is some significant distance from our first location. There will now be a different star at or on: a. the celestial north pole b. the zenith c. the celestial equator d. the celestial south pole e. all of the above 2. A very odd friend of yours (living in Sal ...
Astronomy on Antarctic Plateau - The National Academies of
... by the ARENA network (http://arena.unice.fr). The ARENA network focuses on programs at Dome C, but most of these studies are also applicable to Dome A which has perhaps even better observing conditions than Dome C in some aspects. The following area has been identified by the ARENA consortium as pot ...
... by the ARENA network (http://arena.unice.fr). The ARENA network focuses on programs at Dome C, but most of these studies are also applicable to Dome A which has perhaps even better observing conditions than Dome C in some aspects. The following area has been identified by the ARENA consortium as pot ...
Galaxies
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
Document
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
BT-70-45 review by Phil Harrington
... applied judging by its uniform appearance. Focusing operates smoothly without any binding. Interpupillary adjustment is also smooth, although it requires a little more force than I expected. Looking more deeply, I found the interiors of my test unit’s barrels, as well as all internal hardware, paint ...
... applied judging by its uniform appearance. Focusing operates smoothly without any binding. Interpupillary adjustment is also smooth, although it requires a little more force than I expected. Looking more deeply, I found the interiors of my test unit’s barrels, as well as all internal hardware, paint ...
Word - Wichita State University
... Over the years many interesting things have happened at the Observatory. Here are just a few. One evening a five or six year old girl discovered Saturn on her own with a small telescope and rushed back inside to get a staff member to go back outside with her so he could see what she had done. Anothe ...
... Over the years many interesting things have happened at the Observatory. Here are just a few. One evening a five or six year old girl discovered Saturn on her own with a small telescope and rushed back inside to get a staff member to go back outside with her so he could see what she had done. Anothe ...
INTL JOURNAL OF ELECTRONICS AND TELECOMMUNICATIONS
... We are living in an age of dynamic development of science and technology. Among the fields which contribute most to this progress are aviation and astronautics. The human desire to lift off the ground, rising above the atmosphere, and curiosity about the mysteries of space, have both contributed to ...
... We are living in an age of dynamic development of science and technology. Among the fields which contribute most to this progress are aviation and astronautics. The human desire to lift off the ground, rising above the atmosphere, and curiosity about the mysteries of space, have both contributed to ...
Chapter 3
... atmosphere The Hubble Space Telescope • In orbit since 1990. Still in operations • 2.4 m diameter mirror (solid) • It can observe in near UV, visual and IR • Cost about 2.5 billions US $ • Next space telescope: James Webb Telescope • 6.5 m diameter, 18 hexagonal mirrors . Projected launch date : 201 ...
... atmosphere The Hubble Space Telescope • In orbit since 1990. Still in operations • 2.4 m diameter mirror (solid) • It can observe in near UV, visual and IR • Cost about 2.5 billions US $ • Next space telescope: James Webb Telescope • 6.5 m diameter, 18 hexagonal mirrors . Projected launch date : 201 ...
Galaxies
... (absolute brightness plus apparent brightness gives distance) • Early 20th Cent. studies of variable stars in Magellanic Clouds gave new tool – Henrietta Leavitt 1908-1912 • Led to understanding intergalactic (> 1 MLY) distances Edwin Hubble 1920s ...
... (absolute brightness plus apparent brightness gives distance) • Early 20th Cent. studies of variable stars in Magellanic Clouds gave new tool – Henrietta Leavitt 1908-1912 • Led to understanding intergalactic (> 1 MLY) distances Edwin Hubble 1920s ...
Optics requirements for the Generation-X x
... Astronomical x-ray telescopes need large area and high-resolution imaging. International X-ray Observatory (IXO) ...
... Astronomical x-ray telescopes need large area and high-resolution imaging. International X-ray Observatory (IXO) ...
Space telescopes - International Space Science Institute
... the mirror coating reflectivity (single or multilayer) permits efficient observations. At shorter wavelengths, i.e., shorter than about 70 nm (EUV), grazing-incidence (GI) telescopes could be considered as an alternative. At even shorter wavelengths, i.e., shorter than about 5 nm up to hard X-rays w ...
... the mirror coating reflectivity (single or multilayer) permits efficient observations. At shorter wavelengths, i.e., shorter than about 70 nm (EUV), grazing-incidence (GI) telescopes could be considered as an alternative. At even shorter wavelengths, i.e., shorter than about 5 nm up to hard X-rays w ...
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.