6 OPTICS
... A corrector and atmospheric dispersion compensator (ADC) will be provided for wide-field, natural seeing, operation in the visible band. This will allow observations over a field of view up to 20 arcminutes (goal: 24 arcminutes). The corrector and ADC will be removable for work on smaller fields and ...
... A corrector and atmospheric dispersion compensator (ADC) will be provided for wide-field, natural seeing, operation in the visible band. This will allow observations over a field of view up to 20 arcminutes (goal: 24 arcminutes). The corrector and ADC will be removable for work on smaller fields and ...
A Synopsis of the Paper, “Optical Performance of the James Webb
... allocations for the individual segments. It is interesting to note that the uncorrectable figure is allocated 47 nm of the allowed 49 nm for the post corrected segment figure. The active control of the mirror are going to be designed to correct for most of the low order aberrations such as ROC, asti ...
... allocations for the individual segments. It is interesting to note that the uncorrectable figure is allocated 47 nm of the allowed 49 nm for the post corrected segment figure. The active control of the mirror are going to be designed to correct for most of the low order aberrations such as ROC, asti ...
The Hubble Space Telescope Optical Systems Failure Report
... mirrors there are many repetitive cycles in which the surface is tested by reflecting light from it; the surface is then selectively polished to correct any errors in its shape. The error in the HST's mirror occurred because the optical test used in this process was not set up correctly; thus the su ...
... mirrors there are many repetitive cycles in which the surface is tested by reflecting light from it; the surface is then selectively polished to correct any errors in its shape. The error in the HST's mirror occurred because the optical test used in this process was not set up correctly; thus the su ...
The Hubble Space Telescope Optical Systems Failure Report
... mirrors there are many repetitive cycles in which the surface is tested by reflecting light from it; the surface is then selectively polished to correct any errors in its shape. The error in the HST's mirror occurred because the optical test used in this process was not set up correctly; thus the su ...
... mirrors there are many repetitive cycles in which the surface is tested by reflecting light from it; the surface is then selectively polished to correct any errors in its shape. The error in the HST's mirror occurred because the optical test used in this process was not set up correctly; thus the su ...
Coating Gemini Telescopes with Protected Silver
... made up of two of the largest advanced optical/IR telescopes available to astronomers. The observatory is managed by the Association of Universities for Research in Astronomy (AURA). AURA consists of an international consortium of the U.S., Canada, Chile, Brazil, Argentina, and Australia. ...
... made up of two of the largest advanced optical/IR telescopes available to astronomers. The observatory is managed by the Association of Universities for Research in Astronomy (AURA). AURA consists of an international consortium of the U.S., Canada, Chile, Brazil, Argentina, and Australia. ...
Section 4 of the ATM List FAQ
... Republished by Willmann-Bell, Inc., 1986 ISBN: 0-943396-11-5 (volume 1) and 0-943396-12-3 (volume 2) Content: The codes don't really work for this book. A smattering of everything pre-Dobson, but does not attempt to cover basic TM information needed by those making a first scope. Comment: ATMT is a ...
... Republished by Willmann-Bell, Inc., 1986 ISBN: 0-943396-11-5 (volume 1) and 0-943396-12-3 (volume 2) Content: The codes don't really work for this book. A smattering of everything pre-Dobson, but does not attempt to cover basic TM information needed by those making a first scope. Comment: ATMT is a ...
Missions
... the true age of the Earth was a Scottish physician called James Hutton, an amateur geologist, who, in 1790, realised from his study of rock formations that the Earth had to be much older. It was so many millions of years older than previously imagined, that it made Hutton’s head spin to be “looking ...
... the true age of the Earth was a Scottish physician called James Hutton, an amateur geologist, who, in 1790, realised from his study of rock formations that the Earth had to be much older. It was so many millions of years older than previously imagined, that it made Hutton’s head spin to be “looking ...
ESA BR-170 - ESA Science
... on the ground. To give a full account of them all, as well as of all the infrared discoveries made so far, would be too ambitious a goal and is not the purpose of this brochure, which focuses on missions involving ESA. We hope that these pages will give a glimpse behind the scenes of infrared astron ...
... on the ground. To give a full account of them all, as well as of all the infrared discoveries made so far, would be too ambitious a goal and is not the purpose of this brochure, which focuses on missions involving ESA. We hope that these pages will give a glimpse behind the scenes of infrared astron ...
Wide-field CCD imager for the 6.5m MMT telescope
... The conversion of the Multiple Mirror Telescope from six 1.8m mirrors to a single 6.5m mirror will signi cantly increase its capability for imaging. The f/5 con guration will provide a corrected eld of view for imaging that is at and 30 arcminutes in diameter. The image quality in the absence of a ...
... The conversion of the Multiple Mirror Telescope from six 1.8m mirrors to a single 6.5m mirror will signi cantly increase its capability for imaging. The f/5 con guration will provide a corrected eld of view for imaging that is at and 30 arcminutes in diameter. The image quality in the absence of a ...
Symposium on Telescope Science - Society for Astronomical Sciences
... Abstract: The discovery since 1995 of more than 80 planets around nearby solar-like stars and the photometric measurement of a transit of the jovian mass planet orbiting the solar-like star HD 209458 (producing a more than 1% drop in brightness that lasts 3 hours) has heralded a new era in astronomy ...
... Abstract: The discovery since 1995 of more than 80 planets around nearby solar-like stars and the photometric measurement of a transit of the jovian mass planet orbiting the solar-like star HD 209458 (producing a more than 1% drop in brightness that lasts 3 hours) has heralded a new era in astronomy ...
Deployment of the Hobby-Eberly Telescope wide
... fibers at f/3.65 to minimize focal ratio degradation, and so the chief ray from all field angles is normal to the focal surface. This is achieved with a concave spherical focal surface centered on the exit pupil. The primary mirror spherical aberration and the off-axis aberrations in the wide field ...
... fibers at f/3.65 to minimize focal ratio degradation, and so the chief ray from all field angles is normal to the focal surface. This is achieved with a concave spherical focal surface centered on the exit pupil. The primary mirror spherical aberration and the off-axis aberrations in the wide field ...
- River Bend Astronomy Club
... daily. The only survey when I began hunting was Spacewatch, but it sent its data monthly. Thus, I could actually get credit for finding something that Spacewatch spotted a few days earlier because I was the first to send two nights of observations. “Even today, surveys aren’t going much deeper than ...
... daily. The only survey when I began hunting was Spacewatch, but it sent its data monthly. Thus, I could actually get credit for finding something that Spacewatch spotted a few days earlier because I was the first to send two nights of observations. “Even today, surveys aren’t going much deeper than ...
Inferring Telescope Polarization Properties Through
... the optical path as feasible is thus beneficial. All modern solar telescopes adopted the strategy of the ASP and incorporated calibration optics as early in the optical path as possible, thus calibrating the largest number of optical components. One recent example is the German GREGOR telescope (Sch ...
... the optical path as feasible is thus beneficial. All modern solar telescopes adopted the strategy of the ASP and incorporated calibration optics as early in the optical path as possible, thus calibrating the largest number of optical components. One recent example is the German GREGOR telescope (Sch ...
X-Ray Telescopes
... telescope resolution. Using the large-area proportional counters on board HEAO-1, positions accurate to ∼0.1 square degrees were obtained for weak point sources. On average, there will be one star brighter than 12th magnitude in the position error box. For comparison, the optical counterparts of Sco ...
... telescope resolution. Using the large-area proportional counters on board HEAO-1, positions accurate to ∼0.1 square degrees were obtained for weak point sources. On average, there will be one star brighter than 12th magnitude in the position error box. For comparison, the optical counterparts of Sco ...
Galaxy Hunters Article, Cosmology Information, First Star Facts
... largest meetings ever devoted to the origin of galaxies. The first star was born about 14 billion years ago, Abel believes, in a universe that was more mysterious but also far simpler than our own. Smaller and denser than today, the universe was pitch-black and contained mostly hydrogen and helium w ...
... largest meetings ever devoted to the origin of galaxies. The first star was born about 14 billion years ago, Abel believes, in a universe that was more mysterious but also far simpler than our own. Smaller and denser than today, the universe was pitch-black and contained mostly hydrogen and helium w ...
A Beginner`s Guide to Choosing Binoculars and Telescopes for
... But binoculars are telescopes! They are simply two small telescopes side by side, with a little extra optics to make the eyepieces close enough so you can comfortable look through both at the same time. Unlike a larger telescope, binoculars are easy and intuitive to use. They produce a rightside-up ...
... But binoculars are telescopes! They are simply two small telescopes side by side, with a little extra optics to make the eyepieces close enough so you can comfortable look through both at the same time. Unlike a larger telescope, binoculars are easy and intuitive to use. They produce a rightside-up ...
An Overview of Wide-Field-Of-View
... optical designs suitable for survey instruments in the ½ meter class aperture range. The size is small enough to be affordable for many less well funded research programs, yet large enough that when coupled with a modest CCD mosaic, the resulting system represents a capable survey instrument. Many o ...
... optical designs suitable for survey instruments in the ½ meter class aperture range. The size is small enough to be affordable for many less well funded research programs, yet large enough that when coupled with a modest CCD mosaic, the resulting system represents a capable survey instrument. Many o ...
Telescope Web Sites
... http://www.anzwers.org/free/universe/index.html- My favorite, an atlas of the universe http://www.universetoday.com/ - Featured news of the day http://astro.phys.au.dk/~bruntt/catalog.html - Catalog of astrophysical sites Where to see the stars around here. www.rtmc-inc.org/ - Big Bear hosts Riversi ...
... http://www.anzwers.org/free/universe/index.html- My favorite, an atlas of the universe http://www.universetoday.com/ - Featured news of the day http://astro.phys.au.dk/~bruntt/catalog.html - Catalog of astrophysical sites Where to see the stars around here. www.rtmc-inc.org/ - Big Bear hosts Riversi ...
Astronomical Instruments
... • The primary lens of a refracting telescope is very expensive to make. – This is because it must be a two-piece achromatic lens, and the glass must also be pure and flawless because the light passes through the lens. – Also, the four surfaces must be ground precisely, and the lens can be supported ...
... • The primary lens of a refracting telescope is very expensive to make. – This is because it must be a two-piece achromatic lens, and the glass must also be pure and flawless because the light passes through the lens. – Also, the four surfaces must be ground precisely, and the lens can be supported ...
Slide 1
... part of NASA's fleet of "Great Observatories" including: • the Hubble Space Telescope • the Spitizer Space Telescope • Compton Gamma Ray Observatory (deorbited) ...
... part of NASA's fleet of "Great Observatories" including: • the Hubble Space Telescope • the Spitizer Space Telescope • Compton Gamma Ray Observatory (deorbited) ...
Lab 6 - College of San Mateo
... prism table platform so that light from the slit is refracted through the prism, as in the diagram in section IV. The incident ray should make an angle of about 50° to 55° with the normal line, or about 35° to 40° with the face of the prism. (A spectrum may also be seen using light at normal inciden ...
... prism table platform so that light from the slit is refracted through the prism, as in the diagram in section IV. The incident ray should make an angle of about 50° to 55° with the normal line, or about 35° to 40° with the face of the prism. (A spectrum may also be seen using light at normal inciden ...
Teacher Guide Whole-no background
... through his own discoveries, but by paving the way for his fellow astronomers and future generations of scientists. Most people, especially young people, are not aware that America led the world in space exploration long before NASA and the Moon landing. For nearly five decades, from the 1890s throu ...
... through his own discoveries, but by paving the way for his fellow astronomers and future generations of scientists. Most people, especially young people, are not aware that America led the world in space exploration long before NASA and the Moon landing. For nearly five decades, from the 1890s throu ...
PDF only - at www.arxiv.org.
... their respective goals. While the meeting was intended to be face- to-face, call-in facilities were made available and collaborative tools such as Webex and others were used to provide as creative and productive an environment as possible. This paper is an accumulated set of reports from the speaker ...
... their respective goals. While the meeting was intended to be face- to-face, call-in facilities were made available and collaborative tools such as Webex and others were used to provide as creative and productive an environment as possible. This paper is an accumulated set of reports from the speaker ...
What You need to know - Peterborough Astronomical Society
... But binoculars are telescopes! They are simply two small telescopes side by side, with a little extra optics to make the eyepieces close enough so you can comfortably look through both at the same time. Unlike a larger telescope, binoculars are easy and intuitive to use. They produce a rightside-up ...
... But binoculars are telescopes! They are simply two small telescopes side by side, with a little extra optics to make the eyepieces close enough so you can comfortably look through both at the same time. Unlike a larger telescope, binoculars are easy and intuitive to use. They produce a rightside-up ...
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.