FISICA: The Florida Image Slicer for Infrared Cosmology
... infrared astronomy. While optical fibers have tended to work rather well in integral field units (IFU) for optical instruments, they can suffer from many drawbacks for infrared work, including low throughput, limited bandwidth, high background (for non-cryogenic IFUs), and other optical drawbacks as ...
... infrared astronomy. While optical fibers have tended to work rather well in integral field units (IFU) for optical instruments, they can suffer from many drawbacks for infrared work, including low throughput, limited bandwidth, high background (for non-cryogenic IFUs), and other optical drawbacks as ...
Manufacture of 8.4 m off-axis segments
... The primary mirror is fast with an 18 m focal length (f/0.7 over the 25.3 m diameter that includes the full segments). This leads to a compact and stiff telescope structure, with a lightweight truss supporting the adaptive Gregorian secondary mirror. Manufacturing the six off-axis segments is recog ...
... The primary mirror is fast with an 18 m focal length (f/0.7 over the 25.3 m diameter that includes the full segments). This leads to a compact and stiff telescope structure, with a lightweight truss supporting the adaptive Gregorian secondary mirror. Manufacturing the six off-axis segments is recog ...
The following is a supplemental addendum to the included
... alignment). Quick-Align is not meant to be used to accurately locate small or faint deep-sky objects or to track objects accurately for photography. To use Quick-Align, simply select Quick Align from the alignment options and press ENTER. The telescope will automatically use the entered date/time pa ...
... alignment). Quick-Align is not meant to be used to accurately locate small or faint deep-sky objects or to track objects accurately for photography. To use Quick-Align, simply select Quick Align from the alignment options and press ENTER. The telescope will automatically use the entered date/time pa ...
Celestron Telescope Accessory Catalog
... These are Celestron’s top of the line eyepieces, utilizing a hybrid design of five elements. They feature long eye relief and a wide field, and each air-to-glass surface is fully multicoated to enhance contrast levels. These special eyepieces are computer designed to keep visual aberrations to an ab ...
... These are Celestron’s top of the line eyepieces, utilizing a hybrid design of five elements. They feature long eye relief and a wide field, and each air-to-glass surface is fully multicoated to enhance contrast levels. These special eyepieces are computer designed to keep visual aberrations to an ab ...
design for the TMT mid-infrared adaptive optics system
... that these two errors affect the image profile in different ways. The high order errors mainly remove light from the diffraction core, while the jitter errors act to broaden it. The light in the broadened core can in principle be recovered, at the expense of increased background, using a wider slit ...
... that these two errors affect the image profile in different ways. The high order errors mainly remove light from the diffraction core, while the jitter errors act to broaden it. The light in the broadened core can in principle be recovered, at the expense of increased background, using a wider slit ...
normal and active - FirstLight Astro
... 1. What’s the difference between rich galaxy clusters and the poor ones? 2. What is the name of our local group of galaxies? 3. What major phenomenon is probably responsible for the shapes and sizes of galaxies? 4. What is galactic cannibalism? 5. What type of galaxy often results when one galaxy pa ...
... 1. What’s the difference between rich galaxy clusters and the poor ones? 2. What is the name of our local group of galaxies? 3. What major phenomenon is probably responsible for the shapes and sizes of galaxies? 4. What is galactic cannibalism? 5. What type of galaxy often results when one galaxy pa ...
GM-8 manual-05.cdr
... The TVC (Time Variable Compensation) function allows you to eliminate the backlash in the DEC motor when changing directions such as from North to South or vice versa. Each time you change the direction of the telescope in declination, the motor speeds up momentarily to take up any slack, There are ...
... The TVC (Time Variable Compensation) function allows you to eliminate the backlash in the DEC motor when changing directions such as from North to South or vice versa. Each time you change the direction of the telescope in declination, the motor speeds up momentarily to take up any slack, There are ...
File 11 - School of Astronomy, IPM
... • Based on photographic images in the blue emphasises star formation (not mass distribution) High z galaxies sample the rest frame UV. • Requires reasonably good spatial resolution across the galaxy ( 20 elements) progressively more difficult for cz > 8000 km/s from ground. To summarise, three kinds ...
... • Based on photographic images in the blue emphasises star formation (not mass distribution) High z galaxies sample the rest frame UV. • Requires reasonably good spatial resolution across the galaxy ( 20 elements) progressively more difficult for cz > 8000 km/s from ground. To summarise, three kinds ...
11 01 04 Portable M Class Astro
... tracking or autoguiding. Because they are alt-az telescopes, their fields rotate, so accurate instrument de-rotation is required. Operating out in the open, general purpose imaging telescopes need to be resistant to wind gusts. This can be achieved by designing inherently stiff telescopes with low a ...
... tracking or autoguiding. Because they are alt-az telescopes, their fields rotate, so accurate instrument de-rotation is required. Operating out in the open, general purpose imaging telescopes need to be resistant to wind gusts. This can be achieved by designing inherently stiff telescopes with low a ...
AstroMaster Series Telescopes
... optical tube, make sure that the declination and right ascension locking knobs are tight (Figure 2-17). Then, make sure that the latitude adjustment screws (Figures 1-1 & 1-2) are tight. This will ensure that the mount does not move suddenly while attaching the telescope optical tube. Also, remove t ...
... optical tube, make sure that the declination and right ascension locking knobs are tight (Figure 2-17). Then, make sure that the latitude adjustment screws (Figures 1-1 & 1-2) are tight. This will ensure that the mount does not move suddenly while attaching the telescope optical tube. Also, remove t ...
Lecture notes 18: Galaxies and galaxy clusters
... Lecture notes 18: Galaxies and galaxy clusters Immanuel Kant (1724–1824) and Thomas Wright (1711–1786) were among the first to recocnize the possibility that the Milky Way was indeed a stellar disk where the Sun was but one of many. Kant went on to propose that if the Milky Way were limited then perh ...
... Lecture notes 18: Galaxies and galaxy clusters Immanuel Kant (1724–1824) and Thomas Wright (1711–1786) were among the first to recocnize the possibility that the Milky Way was indeed a stellar disk where the Sun was but one of many. Kant went on to propose that if the Milky Way were limited then perh ...
File - Mr. Catt`s Class
... 2. Look-back time is the time light from a distant object has traveled to reach us. 3. The look-back time complicates our interpretation of galaxies because the farther out we look, the earlier in time we are seeing them. – Our assumption that distant clusters are similar to nearby clusters may not ...
... 2. Look-back time is the time light from a distant object has traveled to reach us. 3. The look-back time complicates our interpretation of galaxies because the farther out we look, the earlier in time we are seeing them. – Our assumption that distant clusters are similar to nearby clusters may not ...
Hidden57_rf
... versions of the traditional telescope. This book will enable you to peer through these exotic new telescopes and see some of the more spectacular images that have become the icons of modern astronomy. By expanding your vision beyond the visible into an array of “colours” that span the full spectrum ...
... versions of the traditional telescope. This book will enable you to peer through these exotic new telescopes and see some of the more spectacular images that have become the icons of modern astronomy. By expanding your vision beyond the visible into an array of “colours” that span the full spectrum ...
A S R TRATEGY
... size, but the movement also causes the core energy to fall by about 40%. The Strehl ratio of HST was predicted to be close to 0.9 at 633 nm. Due to spherical aberration, it is an order of magnitude lower, 0.10. Nevertheless, it is still an order of magnitude better than the value 0.012 for 0.5 arcse ...
... size, but the movement also causes the core energy to fall by about 40%. The Strehl ratio of HST was predicted to be close to 0.9 at 633 nm. Due to spherical aberration, it is an order of magnitude lower, 0.10. Nevertheless, it is still an order of magnitude better than the value 0.012 for 0.5 arcse ...
IN 175 SkyView Pro 8 EQ
... observe in the telescope, because the finder scope has a much wider field-of-view. The SkyView Pro 8 EQ’s finder scope uses a spring-loaded bracket that makes alignment of the finderscope very easy. As you turn either of the thumbscrews, the spring in the bracket’s tensioner moves in and out to keep ...
... observe in the telescope, because the finder scope has a much wider field-of-view. The SkyView Pro 8 EQ’s finder scope uses a spring-loaded bracket that makes alignment of the finderscope very easy. As you turn either of the thumbscrews, the spring in the bracket’s tensioner moves in and out to keep ...
SkyProdigy Series Manual
... view! It’s that easy. If you are new to astronomy, you may wish to start off by using SkyProdigy's built-in Tour feature, which commands SkyProdigy to find the most interesting objects in the sky and automatically slews to each one. Or if you are more experienced , you will appreciate the comprehens ...
... view! It’s that easy. If you are new to astronomy, you may wish to start off by using SkyProdigy's built-in Tour feature, which commands SkyProdigy to find the most interesting objects in the sky and automatically slews to each one. Or if you are more experienced , you will appreciate the comprehens ...
PPT
... Modeling such collisions on a computer shows that two spiral galaxies can merge to make an elliptical ...
... Modeling such collisions on a computer shows that two spiral galaxies can merge to make an elliptical ...
Document
... Why is adaptive optics needed? Turbulence in earth’s atmosphere makes stars twinkle More importantly, turbulence spreads out light; makes it a blob rather than a point ...
... Why is adaptive optics needed? Turbulence in earth’s atmosphere makes stars twinkle More importantly, turbulence spreads out light; makes it a blob rather than a point ...
orion® skyView Pro™ EQ Mount
... was developed to work with many different telescope optical tubes. Designed for astronomical use, this precision mount allows convenient “tracking” of celestial objects as they move slowly across the sky, so they remain within your eyepiece’s field of view. The setting circles built into the mount w ...
... was developed to work with many different telescope optical tubes. Designed for astronomical use, this precision mount allows convenient “tracking” of celestial objects as they move slowly across the sky, so they remain within your eyepiece’s field of view. The setting circles built into the mount w ...
Lecture #1 Basic Concepts and Principles of Adaptive Optics
... cannot be focused into a diffraction-limited image unless some sort of phase correction is applied. r0 is a time-dependent parameter which entirely defines the spatial statistics of phase fluctuations occuring across a telescope aperture. It was originally defined as the maximum diameter of telescop ...
... cannot be focused into a diffraction-limited image unless some sort of phase correction is applied. r0 is a time-dependent parameter which entirely defines the spatial statistics of phase fluctuations occuring across a telescope aperture. It was originally defined as the maximum diameter of telescop ...
T1000700-v2 Transmon Telescope Mirror Test Procedure
... Also, check that the reticle pattern aligns with the horizontal cross line on the Primary Mirror target--if not, the height of the Primary Mirror must be adjusted accordingly. ...
... Also, check that the reticle pattern aligns with the horizontal cross line on the Primary Mirror target--if not, the height of the Primary Mirror must be adjusted accordingly. ...
ULTRA Optics - Composite Mirror Applications Inc.
... image quality due to substantial reduction in fiber print-through and complete elimination of core print-through. It must be said, at this point, that although small 150mm mirrors have been produced to diffraction-limited accuracy in the visible band, the effort for ULTRA has been restricted to mirr ...
... image quality due to substantial reduction in fiber print-through and complete elimination of core print-through. It must be said, at this point, that although small 150mm mirrors have been produced to diffraction-limited accuracy in the visible band, the effort for ULTRA has been restricted to mirr ...
story of telescope
... Historical changes are slow and occur over a period of time, and the history of ideas in human thought is no exception. But one particular event stands out above all in the history of science. In July 1609, Galileo Galilei used an instrument to look at stars, and the discoveries he reported changed ...
... Historical changes are slow and occur over a period of time, and the history of ideas in human thought is no exception. But one particular event stands out above all in the history of science. In July 1609, Galileo Galilei used an instrument to look at stars, and the discoveries he reported changed ...
Simbol-X: x-ray baffle for stray–light reduction. - IASF Palermo
... the moderate sensitivity and spatial resolution of the previous and present missions dedicated to the observations of the hard X-ray sky. Astrophysical missions like Einstein,1 Rosat,2 BeppoSAX,3 ASCA,4 XMM-Newton,5 Chandra,6 Swift7 and Suzaku,8 thanks to focusing optics based on grazing incident mi ...
... the moderate sensitivity and spatial resolution of the previous and present missions dedicated to the observations of the hard X-ray sky. Astrophysical missions like Einstein,1 Rosat,2 BeppoSAX,3 ASCA,4 XMM-Newton,5 Chandra,6 Swift7 and Suzaku,8 thanks to focusing optics based on grazing incident mi ...
The Very precise Echelle SpectroPolarimeter on the Araki telescope
... realized with multi-slit masks located on the focal plane of the telescope. However, because these multi-purpose spectropolarimeters must have polarization modulators in the central position of the optical train, the instrumental polarization generated by the upstream lenses and/or the other optical ...
... realized with multi-slit masks located on the focal plane of the telescope. However, because these multi-purpose spectropolarimeters must have polarization modulators in the central position of the optical train, the instrumental polarization generated by the upstream lenses and/or the other optical ...
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.