![PVPhotFlux](http://s1.studyres.com/store/data/008537939_1-4297e75bca54769e45bf42ba686d259e-300x300.png)
PVPhotFlux
... • calibration targets: celestial flux standards • Implementation: (similar to PCD req. 3.2.3) – point-source photometry with default gain setting – flux grid of celestial flux standards (20 mJy to 200 Jy) – measure all three filters (simultaneous coverage where possible) – accuracy goal: S/N ≥ 30 – ...
... • calibration targets: celestial flux standards • Implementation: (similar to PCD req. 3.2.3) – point-source photometry with default gain setting – flux grid of celestial flux standards (20 mJy to 200 Jy) – measure all three filters (simultaneous coverage where possible) – accuracy goal: S/N ≥ 30 – ...
2015 - Society for Astronomical Sciences
... all relatively small, the largest member being 434 Hungaria with an effective diameter of about 13 km. While being small may hinder backyard telescope observations under most circumstances, the proximity of the Hungarias (just outside Mars’ orbit) and their tendency to have high albedos, meaning the ...
... all relatively small, the largest member being 434 Hungaria with an effective diameter of about 13 km. While being small may hinder backyard telescope observations under most circumstances, the proximity of the Hungarias (just outside Mars’ orbit) and their tendency to have high albedos, meaning the ...
Full Programme and Abstracts - UK Exoplanet community meeting
... It is often said that brown dwarfs are excellent proxies for exoplanets for a number of reasons: they have similar atmospheres; in the case of very young objects, they have similar masses; in close binaries they are irradiated; they show variability due to a dynamic atmosphere. In recent years, ther ...
... It is often said that brown dwarfs are excellent proxies for exoplanets for a number of reasons: they have similar atmospheres; in the case of very young objects, they have similar masses; in close binaries they are irradiated; they show variability due to a dynamic atmosphere. In recent years, ther ...
FISICA: The Florida Image Slicer for Infrared Cosmology
... mirrors. These cause a near-complete loss of light over ~1-arcsec near the center of each affected slitlet (comprising ½ of all slitlets). While these were somewhat problematic, they can be compensated using standard dither/nod observing techniques. Furthermore, by slightly offsetting the flat field ...
... mirrors. These cause a near-complete loss of light over ~1-arcsec near the center of each affected slitlet (comprising ½ of all slitlets). While these were somewhat problematic, they can be compensated using standard dither/nod observing techniques. Furthermore, by slightly offsetting the flat field ...
Spectroscopy: Unlocking the Secrets of Star Light
... temperature, how fast it is rotating and whether it is moving towards or away from us, how large and dense it is and what it is made of. Within the last decade planets beyond our Solar System have been discovered via their effect on the parent star's spectrum. Isaac Newton showed that a glass prism ...
... temperature, how fast it is rotating and whether it is moving towards or away from us, how large and dense it is and what it is made of. Within the last decade planets beyond our Solar System have been discovered via their effect on the parent star's spectrum. Isaac Newton showed that a glass prism ...
ppt - SLAC
... 1. Black-body temperature sets the star's color and determines its surface brightness: 2. Atmospheric pressure depends on the star's surface gravity and so, roughly, on its size —a giant, dwarf, or in between. The size and surface brightness yield the star's luminosity and often its evolutionary sta ...
... 1. Black-body temperature sets the star's color and determines its surface brightness: 2. Atmospheric pressure depends on the star's surface gravity and so, roughly, on its size —a giant, dwarf, or in between. The size and surface brightness yield the star's luminosity and often its evolutionary sta ...
Spectroscopy: Unlocking the Secrets of Star Light
... temperature, how fast it is rotating and whether it is moving towards or away from us, how large and dense it is and what it is made of. Within the last decade planets beyond our Solar System have been discovered via their effect on the parent star's spectrum. Isaac Newton showed that a glass prism ...
... temperature, how fast it is rotating and whether it is moving towards or away from us, how large and dense it is and what it is made of. Within the last decade planets beyond our Solar System have been discovered via their effect on the parent star's spectrum. Isaac Newton showed that a glass prism ...
Protocol on Cooperation in Astrophysical Research in Spain
... Islands Astrophysical Institute): a scientific institution belonging to the Higher Council for Scientific Research (CSIC) and set up by it with the collaboration of the University of La Laguna and the Mancomunidad Provincial Interinsular de Cabildos de Santa Cruz de Tenerife for the purpose of promo ...
... Islands Astrophysical Institute): a scientific institution belonging to the Higher Council for Scientific Research (CSIC) and set up by it with the collaboration of the University of La Laguna and the Mancomunidad Provincial Interinsular de Cabildos de Santa Cruz de Tenerife for the purpose of promo ...
THE NUCLEUS OF COMET 48P/JOHNSON
... University of Hawaii (UH) 2.2 m telescope atop Mauna Kea, Hawaii, where a Tektronix 2048 2048 pixel CCD camera was used at the f/10 focus of the telescope. The image scale was 0B219 pixel1. Images were taken through a broadband Mould R filter. We mostly tracked the telescope at nonsidereal rates ...
... University of Hawaii (UH) 2.2 m telescope atop Mauna Kea, Hawaii, where a Tektronix 2048 2048 pixel CCD camera was used at the f/10 focus of the telescope. The image scale was 0B219 pixel1. Images were taken through a broadband Mould R filter. We mostly tracked the telescope at nonsidereal rates ...
Slide 1
... •Goal: Ground must be suppressed by ~109 •Cylindrically symmetric •Curved panels •Extra tall to shield mountains ...
... •Goal: Ground must be suppressed by ~109 •Cylindrically symmetric •Curved panels •Extra tall to shield mountains ...
The Kuiper Belt and Other Debris Disks - UCLA
... witt 2003). Such objects would be recognized by their strongly hyperbolic orbits relative to the Sun, quite different from any object yet observed. ...
... witt 2003). Such objects would be recognized by their strongly hyperbolic orbits relative to the Sun, quite different from any object yet observed. ...
ExpandHorizons_06 - Hanford
... Experiments on the horizon will reveal the nature of gravitational waves, dark matter, dark energy, and many other key questions of science: plenty of help needed! If this interests you: talk to teachers, scientists. Get an internship: do interesting things and meet fascinating people. Take college ...
... Experiments on the horizon will reveal the nature of gravitational waves, dark matter, dark energy, and many other key questions of science: plenty of help needed! If this interests you: talk to teachers, scientists. Get an internship: do interesting things and meet fascinating people. Take college ...
How we think the planets were born
... The Geminids can be annually observed in the first half of December, with its peak activity being around December 14. The shower owes its name to the constellation Gemini from where the meteors appear to emerge from in the sky (the so-called “radiant”). Unlike most other meteor showers, the Geminids ...
... The Geminids can be annually observed in the first half of December, with its peak activity being around December 14. The shower owes its name to the constellation Gemini from where the meteors appear to emerge from in the sky (the so-called “radiant”). Unlike most other meteor showers, the Geminids ...
UK Exoplanet community meeting 2017
... It is often said that brown dwarfs are excellent proxies for exoplanets for a number of reasons: they have similar atmospheres; in the case of very young objects, they have similar masses; in close binaries they are irradiated; they show variability due to a dynamic atmosphere. In recent years, ther ...
... It is often said that brown dwarfs are excellent proxies for exoplanets for a number of reasons: they have similar atmospheres; in the case of very young objects, they have similar masses; in close binaries they are irradiated; they show variability due to a dynamic atmosphere. In recent years, ther ...
Beyond Pluto: Exploring the outer limits of the solar - e
... few large planets and moons, Edgeworth suggested that these condensations then coalesced to form the nine known planets and their satellites. Crucially, Edgeworth recognised that there was no obvious reason why the disc of planet-forming material should have been sharply bounded at the orbit of the ...
... few large planets and moons, Edgeworth suggested that these condensations then coalesced to form the nine known planets and their satellites. Crucially, Edgeworth recognised that there was no obvious reason why the disc of planet-forming material should have been sharply bounded at the orbit of the ...
Chapter 1 - Princeton University Press
... Harlow Shapley had measured the position of the Sun in the Milky Way by using globular clusters. He measured their distances using RR Lyrae variable stars as objects of standard luminosity—standard candles. RR Lyrae stars are 40 to 50 times as luminous as the Sun and so can be seen out to fairly lar ...
... Harlow Shapley had measured the position of the Sun in the Milky Way by using globular clusters. He measured their distances using RR Lyrae variable stars as objects of standard luminosity—standard candles. RR Lyrae stars are 40 to 50 times as luminous as the Sun and so can be seen out to fairly lar ...
UK Exoplanet community meeting 2017
... It is often said that brown dwarfs are excellent proxies for exoplanets for a number of reasons: they have similar atmospheres; in the case of very young objects, they have similar masses; in close binaries they are irradiated; they show variability due to a dynamic atmosphere. In recent years, ther ...
... It is often said that brown dwarfs are excellent proxies for exoplanets for a number of reasons: they have similar atmospheres; in the case of very young objects, they have similar masses; in close binaries they are irradiated; they show variability due to a dynamic atmosphere. In recent years, ther ...
The Case of the Galactic Vacation
... acceleration, and weightlessness. Next stop is Starship 2040, where Mr. Wang of NASA Marshall Space Flight Center explains what tourism in space will be like in about 50 years. Now the detectives realize that no matter where they go in the solar system or galaxy, the current rocket system will not g ...
... acceleration, and weightlessness. Next stop is Starship 2040, where Mr. Wang of NASA Marshall Space Flight Center explains what tourism in space will be like in about 50 years. Now the detectives realize that no matter where they go in the solar system or galaxy, the current rocket system will not g ...
Presolar Cloud Collapse and the Formation and Early Evolution of
... This central core is supported primarily by the thermal pressure of the molecular hydrogen gas, while the remainder of the cloud continues to fall onto the core. For a 1 M cloud, this core has a mass of about 0.0 M (Larson, 1969). Once the central temperature reaches about 2000 K, thermal energy goe ...
... This central core is supported primarily by the thermal pressure of the molecular hydrogen gas, while the remainder of the cloud continues to fall onto the core. For a 1 M cloud, this core has a mass of about 0.0 M (Larson, 1969). Once the central temperature reaches about 2000 K, thermal energy goe ...
2011-GravLens
... Gravitational lenses can be used as gravitational telescopes. The concentrated light from objects seen behind gravitational lenses makes very faint objects appear brighter, larger and therefore more easily studied. One of the most distant object in the universe was discovered by the gravitational le ...
... Gravitational lenses can be used as gravitational telescopes. The concentrated light from objects seen behind gravitational lenses makes very faint objects appear brighter, larger and therefore more easily studied. One of the most distant object in the universe was discovered by the gravitational le ...
SPATIAL STUDY WITH THE VERY LARGE TELESCOPE OF A NEW
... resolved circumstellar dust disk around a 2MASS source at the periphery of the Ophiuchi dark cloud. We present follow-up observations in J, H, and Ks bands, obtained with ISAAC at the Very Large Telescope (VLT) under 0>4 seeing conditions, which unveil a dark dust lane oriented east-west between t ...
... resolved circumstellar dust disk around a 2MASS source at the periphery of the Ophiuchi dark cloud. We present follow-up observations in J, H, and Ks bands, obtained with ISAAC at the Very Large Telescope (VLT) under 0>4 seeing conditions, which unveil a dark dust lane oriented east-west between t ...
... GRAAL is an adaptive optics module developed in the frame of the Adaptive optics facility (AOF), it offers an improved seeing quality to its client instrument, Hawk-I. In the introduction, we present the concept of ground layer adaptive optics, the instrument and the AOF. The following sections prov ...
Optronic Laboratories, Inc. The OL Series 730
... The image is sent via the field-of-view aperture to the spectroradiometer ...
... The image is sent via the field-of-view aperture to the spectroradiometer ...
Spitzer Space Telescope
![](https://commons.wikimedia.org/wiki/Special:FilePath/Spitzer_space_telescope.jpg?width=300)
The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space observatory launched in 2003. It is the fourth and final of the NASA Great Observatories program.The planned mission period was to be 2.5 years with a pre-launch expectation that the mission could extend to five or slightly more years until the onboard liquid helium supply was exhausted. This occurred on 15 May 2009. Without liquid helium to cool the telescope to the very low temperatures needed to operate, most of the instruments are no longer usable. However, the two shortest-wavelength modules of the IRAC camera are still operable with the same sensitivity as before the cryogen was exhausted, and will continue to be used in the Spitzer Warm Mission. All Spitzer data, from both the primary and warm phases, are archived at the Infrared Science Archive (IRSA).In keeping with NASA tradition, the telescope was renamed after its successful demonstration of operation, on 18 December 2003. Unlike most telescopes that are named after famous deceased astronomers by a board of scientists, the new name for SIRTF was obtained from a contest open to the general public.The contest led to the telescope being named in honor of astronomer Lyman Spitzer, who had promoted the concept of space telescopes in the 1940s. Spitzer wrote a 1946 report for RAND Corporation describing the advantages of an extraterrestrial observatory and how it could be realized with available or upcoming technology. He has been cited for his pioneering contributions to rocketry and astronomy, as well as ""his vision and leadership in articulating the advantages and benefits to be realized from the Space Telescope Program.""The US$800 million Spitzer was launched from Cape Canaveral Air Force Station, on a Delta II 7920H ELV rocket, Monday, 25 August 2003 at 13:35:39 UTC-5 (EDT).It follows a heliocentric instead of geocentric orbit, trailing and drifting away from Earth's orbit at approximately 0.1 astronomical unit per year (a so-called ""earth-trailing"" orbit). The primary mirror is 85 centimeters (33 in) in diameter, f/12, made of beryllium and is cooled to 5.5 K (−449.77 °F). The satellite contains three instruments that allow it to perform astronomical imaging and photometry from 3 to 180 micrometers, spectroscopy from 5 to 40 micrometers, and spectrophotometry from 5 to 100 micrometers.