PDF only - at www.arxiv.org.
... regimes capture dust emission because of the relatively low grain temperature, 20-60 K. Such emission is important within our Solar System, in proto-planetary disks where we believe planetary systems like our own are forming, and throughout the disk of the Mil ...
... regimes capture dust emission because of the relatively low grain temperature, 20-60 K. Such emission is important within our Solar System, in proto-planetary disks where we believe planetary systems like our own are forming, and throughout the disk of the Mil ...
PPT - University of Waterloo
... medium resolution spectroscopy in 2'x2' • PACS: spectroscopy with velocity resolution of 100-250 km/s and 1300-3000 km/s coverage or imaging with two 25x16 arrays at 80-130 and 130-210 μm simultaneously • HIFI: very high spectral resolution heterodyne spectroscopy spanning 480-1250 and 1410-1910 GHz ...
... medium resolution spectroscopy in 2'x2' • PACS: spectroscopy with velocity resolution of 100-250 km/s and 1300-3000 km/s coverage or imaging with two 25x16 arrays at 80-130 and 130-210 μm simultaneously • HIFI: very high spectral resolution heterodyne spectroscopy spanning 480-1250 and 1410-1910 GHz ...
Status of mirror segment production for the Giant Magellan Telescope
... university’s Optical Sciences Center in 1984 and moved to the Mirror Lab in 1990.[15] Some mechanical components were replaced in upgrades over the 30 year life of the machine, but by 2014 a number of subsystems were no longer performing reliably and a more thorough upgrade was needed. We also decid ...
... university’s Optical Sciences Center in 1984 and moved to the Mirror Lab in 1990.[15] Some mechanical components were replaced in upgrades over the 30 year life of the machine, but by 2014 a number of subsystems were no longer performing reliably and a more thorough upgrade was needed. We also decid ...
ESA ACHIEVEMENTS
... 1972, proving that ESRO could compete with the major space powers and could manage important industrial contracts. By this time, there had been a fundamental change in ESRO’s aims. Its Council resolved in December 1971 to include applications satellites, namely the Orbital Test Satellite for telecom ...
... 1972, proving that ESRO could compete with the major space powers and could manage important industrial contracts. By this time, there had been a fundamental change in ESRO’s aims. Its Council resolved in December 1971 to include applications satellites, namely the Orbital Test Satellite for telecom ...
george ellery hale - National Academy of Sciences
... ascribed the development of his creative imagination, a characteristic which aided and enriched so greatly his later scientific work. So we see the young boy transforming his bedroom and later a small hallroom into a little shop, surrounded by his tools, his scroll saw and a simple wood lathe. One C ...
... ascribed the development of his creative imagination, a characteristic which aided and enriched so greatly his later scientific work. So we see the young boy transforming his bedroom and later a small hallroom into a little shop, surrounded by his tools, his scroll saw and a simple wood lathe. One C ...
Astronomical imaging using ground
... wavefront correction over wide fields of view. By measuring and averaging the incoming wavefronts to a telescope at several different field points, an estimate of the common turbulence located near the entrance pupil of the telescope can be made, with the uncorrelated higher altitude contributions a ...
... wavefront correction over wide fields of view. By measuring and averaging the incoming wavefronts to a telescope at several different field points, an estimate of the common turbulence located near the entrance pupil of the telescope can be made, with the uncorrelated higher altitude contributions a ...
Reflecting `Popular Culture`: The Introduction, Diffusion, and
... parabolic concave mirror made of metal with a smaller one, this time elliptical. In theory, this combination of mirrors gave a focused image in front of the main mirror. However, the practical construction of the instrument floundered on insurmountable problems.8 Therefore, Newton chose a simpler de ...
... parabolic concave mirror made of metal with a smaller one, this time elliptical. In theory, this combination of mirrors gave a focused image in front of the main mirror. However, the practical construction of the instrument floundered on insurmountable problems.8 Therefore, Newton chose a simpler de ...
Live from McDonald Observatory: Observing Venus: explore how it
... an important discovery because as the videoconference facilitator will demonstrate, for us to see an entire cycle of phases, Venus must orbit the Sun. Your students have begun to make the same gr ...
... an important discovery because as the videoconference facilitator will demonstrate, for us to see an entire cycle of phases, Venus must orbit the Sun. Your students have begun to make the same gr ...
Atmospheric-Turbulence Compensation Experiments Using
... Compensation Experiment (LACE) satellite to measure the quality of the correction directly [5]. These atmospheric-compensation techniques were originally developed for use in the Strategic Defense Initiative ballistic-missile defense system, but are equally applicable to the imaging of astronomical ...
... Compensation Experiment (LACE) satellite to measure the quality of the correction directly [5]. These atmospheric-compensation techniques were originally developed for use in the Strategic Defense Initiative ballistic-missile defense system, but are equally applicable to the imaging of astronomical ...
Detection and Discovery of Near-Earth Asteroids by the LINEAR
... their ability to achieve a solar-weighted quantum efficiencies as high as 65%, a result which is almost two orders of magnitude greater than that of film. The Spacewatch system achieved a faint limiting magnitude because of the long integration time as a star drifts across the CCD. Spacewatch tailor ...
... their ability to achieve a solar-weighted quantum efficiencies as high as 65%, a result which is almost two orders of magnitude greater than that of film. The Spacewatch system achieved a faint limiting magnitude because of the long integration time as a star drifts across the CCD. Spacewatch tailor ...
low-res - Communicating Astronomy with the Public Journal
... The public communication of astronomy provides an important link between the scientific astronomical community and society, giving visibility to scientific success stories and supporting both formal and informal science education. While the principal task of an astronomer is to further our knowledge ...
... The public communication of astronomy provides an important link between the scientific astronomical community and society, giving visibility to scientific success stories and supporting both formal and informal science education. While the principal task of an astronomer is to further our knowledge ...
What To See Telescope(Jul-Sept) v1 - One
... Hercules is a fairly sprawling constellation to the east of Boötes and its bright star Arcturus. The constellation takes its name from the classical mythological figure of the same name. The hero is depicted in the sky kneeling, praying to Zeus for strength to finish his legendary great labors. The ...
... Hercules is a fairly sprawling constellation to the east of Boötes and its bright star Arcturus. The constellation takes its name from the classical mythological figure of the same name. The hero is depicted in the sky kneeling, praying to Zeus for strength to finish his legendary great labors. The ...
Infrared Astronomy
... Humans at normal body temperature, radiate most strongly in the infrared, which is definitely not seen by human eyes. The scientific discovery that the heat we all feel coming from the Sun is largely a radiation beyond the visible red colour of the solar spectrum was made by William Herschel in 1800 ...
... Humans at normal body temperature, radiate most strongly in the infrared, which is definitely not seen by human eyes. The scientific discovery that the heat we all feel coming from the Sun is largely a radiation beyond the visible red colour of the solar spectrum was made by William Herschel in 1800 ...
WFC3 Science White Paper - Space Telescope Science Institute
... public eye, will be the spectacular images it produces of the astronomical sky. Its cameras have been among the most productive instruments in the history of astronomy. As HST begins a second decade of operations, its superb imaging performance must continue to be maintained. Accordingly, a new high ...
... public eye, will be the spectacular images it produces of the astronomical sky. Its cameras have been among the most productive instruments in the history of astronomy. As HST begins a second decade of operations, its superb imaging performance must continue to be maintained. Accordingly, a new high ...
Document
... Atmospheric seeing (about 1-2 arcseconds on average). How can one overcome the atmospheric limitation in optical? 1) By using adaptive optics 2) By using interferometry 3) By putting a telescope in space (HST) ...
... Atmospheric seeing (about 1-2 arcseconds on average). How can one overcome the atmospheric limitation in optical? 1) By using adaptive optics 2) By using interferometry 3) By putting a telescope in space (HST) ...
English version - Richard de Grijs
... The most important implication of this discovery is that there must exist an extremely large number of these ‘vanishing act’ pulsars. The PALFA survey, which is aimed at a section of the Milky Way visible to Arecibo’s radio dish, only covers each position in the survey once. It probably passed ov ...
... The most important implication of this discovery is that there must exist an extremely large number of these ‘vanishing act’ pulsars. The PALFA survey, which is aimed at a section of the Milky Way visible to Arecibo’s radio dish, only covers each position in the survey once. It probably passed ov ...
Optical Specifications (Tech Report #35)
... 1.2 The 6.5m MMT The Smithsonian Institution and the University of Arizona are undertaking the conversion of the Multiple Mirror Telescope (MMT) to a telescope with a single 6.5 meter diameter primary mirror. All of the MMT optics will be replaced in the conversion, and the converted telescope will ...
... 1.2 The 6.5m MMT The Smithsonian Institution and the University of Arizona are undertaking the conversion of the Multiple Mirror Telescope (MMT) to a telescope with a single 6.5 meter diameter primary mirror. All of the MMT optics will be replaced in the conversion, and the converted telescope will ...
evolution of the foucault-secretan reflecting telescope
... Wilhelm Eichens, split from the firm. Marc died in 1867, followed by Foucault in 1868. Foucault’s pupil Adolphe Martin published some of Foucault’s mirror- and lens-making secrets. Martin worked with both Eichens and, episodically, the Secretan firm; but though able to figure small mirrors he proved ...
... Wilhelm Eichens, split from the firm. Marc died in 1867, followed by Foucault in 1868. Foucault’s pupil Adolphe Martin published some of Foucault’s mirror- and lens-making secrets. Martin worked with both Eichens and, episodically, the Secretan firm; but though able to figure small mirrors he proved ...
A New Science Strategy for Space Astronomy and Astrophysics
... NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The members of the committee ...
... NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The members of the committee ...
A Sixty-Year Timeline of the Air Force Maui Optical and
... (AMOS) has provided the U.S. Department of Defense (DoD) with space situational awareness capabilities from the island of Maui, Hawaii. AMOS is comprised of two separate facilities: the Maui Space Surveillance Complex (MSSC) and the Maui High Performance Computing Center (MHPCC). The MSSC is located ...
... (AMOS) has provided the U.S. Department of Defense (DoD) with space situational awareness capabilities from the island of Maui, Hawaii. AMOS is comprised of two separate facilities: the Maui Space Surveillance Complex (MSSC) and the Maui High Performance Computing Center (MHPCC). The MSSC is located ...
4-H Astronomy Project
... Objective: Calculate distances to some common astronomical objects. Materials: This worksheet, calculator, pen or pencil Background: Objects in the universe are so far away that astronomers use light years to show how far away something is. Recall that when you look at an object in outer space you a ...
... Objective: Calculate distances to some common astronomical objects. Materials: This worksheet, calculator, pen or pencil Background: Objects in the universe are so far away that astronomers use light years to show how far away something is. Recall that when you look at an object in outer space you a ...
James Webb Space Telescope
The James Webb Space Telescope (JWST), previously known as Next Generation Space Telescope (NGST), is a space observatory under construction and scheduled to launch in October 2018. The JWST will offer unprecedented resolution and sensitivity from long-wavelength visible to the mid-infrared, and is a successor instrument to the Hubble Space Telescope and the Spitzer Space Telescope. The telescope features a segmented 6.5-meter (21 ft) diameter primary mirror and will be located near the Earth–Sun L2 point. A large sunshield will keep its mirror and four science instruments below 50 K (−220 °C; −370 °F).JWST's capabilities will enable a broad range of investigations across the fields of astronomy and cosmology. One particular goal involves observing some of the most distant objects in the Universe, beyond the reach of current ground and space based instruments. This includes the very first stars, the epoch of reionization, and the formation of the first galaxies. Another goal is understanding the formation of stars and planets. This will include imaging molecular clouds and star-forming clusters, studying the debris disks around stars, direct imaging of planets, and spectroscopic examination of planetary transits.In gestation since 1996, the project represents an international collaboration of about 17 countries led by NASA, and with significant contributions from the European Space Agency and the Canadian Space Agency. It is named after James E. Webb, the second administrator of NASA, who played an integral role in the Apollo program.The JWST has a history of major cost overruns and delays. The first realistic budget estimates were that the observatory would cost $1.6 billion and launch in 2011. NASA has now scheduled the telescope for a 2018 launch. In 2011, the United States House of Representatives voted to terminate funding, after about $3 billion had been spent and 75 percent of its hardware was in production. Funding was restored in compromise legislation with the US Senate, and spending on the program was capped at $8 billion. As of December 2014, the telescope remained on schedule and within budget, but at risk of further delays.