The TMT LGSF Launch Telescope Assembly System
... top end structure by up to ±15 mm in translation，± 2.5 mrad in tilt and ± 4 mm in axial motion over the operating zenith angles between 1 and 65 degrees and at any observing temperature. ...
... top end structure by up to ±15 mm in translation，± 2.5 mrad in tilt and ± 4 mm in axial motion over the operating zenith angles between 1 and 65 degrees and at any observing temperature. ...
Than Our Eyes Can See - Cool Cosmos
... Various properties of our atmosphere account for its opacity. For example, atmospheric gases like water vapor (H 2O) and oxygen efficiently absorb radio waves with wavelengths less than about one centimeter. O ther constituent gases, including H 2O and carbon dioxide absorb most infrared radiation. ...
... Various properties of our atmosphere account for its opacity. For example, atmospheric gases like water vapor (H 2O) and oxygen efficiently absorb radio waves with wavelengths less than about one centimeter. O ther constituent gases, including H 2O and carbon dioxide absorb most infrared radiation. ...
Slide 1
... Spitzer is the final spacecraft in NASA's Great Observatories program Pilachowski / August 2005 Slide 3 ...
... Spitzer is the final spacecraft in NASA's Great Observatories program Pilachowski / August 2005 Slide 3 ...
Report of the HST-JWST Transition Panel
... decay. The HST carries a complement of 6 gyroscopes, and at present 3 are needed for successful operation of the telescope (although operation with 2 gyroscopes is anticipated). These gyroscopes are among the most sensitive ever built, but in the past they have lost their accuracy within a few years ...
... decay. The HST carries a complement of 6 gyroscopes, and at present 3 are needed for successful operation of the telescope (although operation with 2 gyroscopes is anticipated). These gyroscopes are among the most sensitive ever built, but in the past they have lost their accuracy within a few years ...
pdf - Giovanni Battista Amici
... to identify the instant of the passage of the sun at the meridian. I saw this ingenious instrument for the first time in August of 1844 while visiting the famous Enke in Berlin, and in examining its construction - which consists of two plane mirrors inclined one against the other and covered with a ...
... to identify the instant of the passage of the sun at the meridian. I saw this ingenious instrument for the first time in August of 1844 while visiting the famous Enke in Berlin, and in examining its construction - which consists of two plane mirrors inclined one against the other and covered with a ...
675 x 4.5” Reflector Telescope
... Latitude Lock Knob. Polaris is 1 degree from the North celestial pole. Therefore, the sighting of stars will have to be slightly adjusted as you locate them in the heavens. ...
... Latitude Lock Knob. Polaris is 1 degree from the North celestial pole. Therefore, the sighting of stars will have to be slightly adjusted as you locate them in the heavens. ...
The SPEED Project - European Southern Observatory
... An overview is presented of the Segmented Pupil Experiment for Exoplanet Detection (SPEED) testbench. This is an advanced facility in development at the Lagrange Laboratory that will address several of the most critical issues affecting high-contrast imaging for the next generation of optical/near-i ...
... An overview is presented of the Segmented Pupil Experiment for Exoplanet Detection (SPEED) testbench. This is an advanced facility in development at the Lagrange Laboratory that will address several of the most critical issues affecting high-contrast imaging for the next generation of optical/near-i ...
Telescopes - Sierra College Astronomy Home Page
... X-ray telescopes employ a grazing incidence technology – NASA’s Chandra X-Ray Observatory consists of several nested grazing incidence mirrors and offers the best in angular resolution – The European XMM-Newton telescope has a larger collecting area ...
... X-ray telescopes employ a grazing incidence technology – NASA’s Chandra X-Ray Observatory consists of several nested grazing incidence mirrors and offers the best in angular resolution – The European XMM-Newton telescope has a larger collecting area ...
Power Point Kickoff Mtg
... system in place, with the capability to set the dome thermal environment to a temperature specified by the operator. That temperature will be based on predictions as to what the outside temperature will be during that evenings observing run. ...
... system in place, with the capability to set the dome thermal environment to a temperature specified by the operator. That temperature will be based on predictions as to what the outside temperature will be during that evenings observing run. ...
GENERAL: LOW THRESHOLD
... EXAMPLE: CRAB OBSERVATION DURING COMMISSIONING (FEB 04) PHASE WITH NONOPTIMISED CUTS. Ethr.(size 2000) > 70 GeV/ (cosQ)2.7 ...
... EXAMPLE: CRAB OBSERVATION DURING COMMISSIONING (FEB 04) PHASE WITH NONOPTIMISED CUTS. Ethr.(size 2000) > 70 GeV/ (cosQ)2.7 ...
Teleskop Modern
... diameter2 or diameter3, so the costeffectiveness of a ground-based telescope is roughly independent of size, or maybe even somewhat favoring smaller apertures Of course, there is some science that simply demands the largest telescopes ...
... diameter2 or diameter3, so the costeffectiveness of a ground-based telescope is roughly independent of size, or maybe even somewhat favoring smaller apertures Of course, there is some science that simply demands the largest telescopes ...
Wide field telescope using spherical mirrors
... fields using correctors. Numerous correctors can populate the focal surface. To achieve a 30-m aperture we use a telescope with 36-m primary mirror and 15-m secondary mirror. The 3° field of view extends over a 7 meter focal surface. The spherical aberration from this system is large (about 2 arc mi ...
... fields using correctors. Numerous correctors can populate the focal surface. To achieve a 30-m aperture we use a telescope with 36-m primary mirror and 15-m secondary mirror. The 3° field of view extends over a 7 meter focal surface. The spherical aberration from this system is large (about 2 arc mi ...
Seeing dark matter in the Andromeda galaxy
... the Sun. In M31, the same relation between mass, velocity, and distance holds. A flat rotation curve (V = constant) implies that mass increases linearly with distance from the center. (I leave this as an exercise for the reader.) Enormous amounts of nonluminous matter extend far beyond the optical i ...
... the Sun. In M31, the same relation between mass, velocity, and distance holds. A flat rotation curve (V = constant) implies that mass increases linearly with distance from the center. (I leave this as an exercise for the reader.) Enormous amounts of nonluminous matter extend far beyond the optical i ...
Wide Eye Debris telescope allows to catalogue objects in any orbital
... of an innovative optical system for debris surveillance obtained by applying a good combination of both innovative and state of the art solutions. This paper presents the architecture of the optical sensor used for space debris monitoring, catalogue build up and maintenance for collision avoidance, ...
... of an innovative optical system for debris surveillance obtained by applying a good combination of both innovative and state of the art solutions. This paper presents the architecture of the optical sensor used for space debris monitoring, catalogue build up and maintenance for collision avoidance, ...
Experience with the Hubble Space Telescope: Twenty Years
... • Determine the properties of the intergalactic medium by observing its absorption signature in the UV spectra of a large number of very distant quasars, caused by the material intervening along the pencil-beam line of sight to each quasar. • Survey galaxy demographics and other objects of interest ...
... • Determine the properties of the intergalactic medium by observing its absorption signature in the UV spectra of a large number of very distant quasars, caused by the material intervening along the pencil-beam line of sight to each quasar. • Survey galaxy demographics and other objects of interest ...
Preparing astronomical observations and observing with OHP facilities
... Way’s sister in shape and size), to very remote objects distant of thousands of megaparsecs (1 Mpc is about 3 million light years). Galaxies are disposed homogenously in the sky, and thus are visible in almost every part of the sky, except in the busy zones of our foreground Milky Way. These zones a ...
... Way’s sister in shape and size), to very remote objects distant of thousands of megaparsecs (1 Mpc is about 3 million light years). Galaxies are disposed homogenously in the sky, and thus are visible in almost every part of the sky, except in the busy zones of our foreground Milky Way. These zones a ...
DAS FOCUS Newsletter_MARCH_2015
... Before beginning this article I checked the weather forecasts for the upcoming Dark Window and it appears that we’re in for a break. Above average temperatures beginning on March 11 and clearing skies, just in time to welcome in the March Dark Window. Hopefully, by the time you read this it hasn’t c ...
... Before beginning this article I checked the weather forecasts for the upcoming Dark Window and it appears that we’re in for a break. Above average temperatures beginning on March 11 and clearing skies, just in time to welcome in the March Dark Window. Hopefully, by the time you read this it hasn’t c ...
CElEstron C6 - Astronomy Magazine
... if portability is high on your wish list), the the mirror and M2 in Aquarius. All three showed good C6 looks like the C8. A gold-anodized This makes the image “jump.” Through the detail through the 25mm eyepiece. dovetail bar bridges the 16-inch-long tube. C6, however, image shift was negligible, Ne ...
... if portability is high on your wish list), the the mirror and M2 in Aquarius. All three showed good C6 looks like the C8. A gold-anodized This makes the image “jump.” Through the detail through the 25mm eyepiece. dovetail bar bridges the 16-inch-long tube. C6, however, image shift was negligible, Ne ...
The Giant Magellan Telescope
... Absolute piston measurement Piston misregistration has unique effects on the MTF of three partially nonredundant arrays made from the full pupil. • Each M1 segment is used exactly twice. • Ideal PSFs are shown in second column. • A quarter wave of piston on either an edge or center segment will affe ...
... Absolute piston measurement Piston misregistration has unique effects on the MTF of three partially nonredundant arrays made from the full pupil. • Each M1 segment is used exactly twice. • Ideal PSFs are shown in second column. • A quarter wave of piston on either an edge or center segment will affe ...
NASA Programs and Budget Updates - Paul Hertz
... Does not specify the distribution of funding for the rest of Astrophysics, but the funding is adequate for Astrophysics to execute its program as planned in FY15. Includes support as planned in FY15 for missions under development, operating missions, SMEX AO, R&A, etc. Final budget numbers ava ...
... Does not specify the distribution of funding for the rest of Astrophysics, but the funding is adequate for Astrophysics to execute its program as planned in FY15. Includes support as planned in FY15 for missions under development, operating missions, SMEX AO, R&A, etc. Final budget numbers ava ...
Equipment Chapter two
... This telescope design was developed jointly by the American optician George Willis Ritchey (1864–1945) and the French optical designer Henri Chretien (1876–1956) in the first decade of the twentieth century. Ritchey, who built the 60 inch and 100 inch mirrors for Mt.Wilson observatory, was so upset ...
... This telescope design was developed jointly by the American optician George Willis Ritchey (1864–1945) and the French optical designer Henri Chretien (1876–1956) in the first decade of the twentieth century. Ritchey, who built the 60 inch and 100 inch mirrors for Mt.Wilson observatory, was so upset ...
Galaxy Notes File
... galaxies are grouped in clusters ranging in size from a few dozens to thousands of galaxies. The Coma Cluster, shown at right, is 300 million light years from the Milky Way and contains more than 1,000 (and possibly as many as 10,000) galaxies. The Milky Way is a member of a small cluster called the ...
... galaxies are grouped in clusters ranging in size from a few dozens to thousands of galaxies. The Coma Cluster, shown at right, is 300 million light years from the Milky Way and contains more than 1,000 (and possibly as many as 10,000) galaxies. The Milky Way is a member of a small cluster called the ...
06_Testbank - Lick Observatory
... wavelengths. Answer: B 11) Which of the following studies is best suited to a time monitoring experiment? A) studying how different stars differ in their chemical compositions B) studying whether a particular star's brightness is steady or variable C) determining the age of the solar system D) measu ...
... wavelengths. Answer: B 11) Which of the following studies is best suited to a time monitoring experiment? A) studying how different stars differ in their chemical compositions B) studying whether a particular star's brightness is steady or variable C) determining the age of the solar system D) measu ...
Cepheids in M100 - Indiana University Astronomy
... The presence of interstellar dust within M100 causes the apparent magnitudes of the Cepheids to be dimmer than they should be, so that they appear to be more distant than they really are. ...
... The presence of interstellar dust within M100 causes the apparent magnitudes of the Cepheids to be dimmer than they should be, so that they appear to be more distant than they really are. ...
Why Build Big Telescopes? Ideas for Teaching Resolution
... primary mirror or lens is more sensitive than one with a smaller primary, that is, it can collect more light. The size of a primary mirror or lens is normally expressed in terms of its diameter. A simple phrase often used by astronomers is that of the light bucket. The bigger the bucket, the more li ...
... primary mirror or lens is more sensitive than one with a smaller primary, that is, it can collect more light. The size of a primary mirror or lens is normally expressed in terms of its diameter. A simple phrase often used by astronomers is that of the light bucket. The bigger the bucket, the more li ...
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.