thin silicon carbide coating of the primary mirror of vuv imaging
... We investigate the thermo-optical and vacuumultraviolet properties of thin silicon carbide (SiC) coatings on transparent substrates in view of their use for Solar Orbiter remote sensing VUV instrumentation. We have made experimental studies with thin SiC coatings on quartz plates to evaluate their r ...
... We investigate the thermo-optical and vacuumultraviolet properties of thin silicon carbide (SiC) coatings on transparent substrates in view of their use for Solar Orbiter remote sensing VUV instrumentation. We have made experimental studies with thin SiC coatings on quartz plates to evaluate their r ...
Chapter 11: Space Technology
... reflecting telescope was shaped, a mistake was made. As a result, images obtained by the telescope were not as clear as expected. In December 1993, a team of astronauts repaired the Hubble Space Telescope by installing a set of small mirrors designed to correct images obtained by the faulty mirror. ...
... reflecting telescope was shaped, a mistake was made. As a result, images obtained by the telescope were not as clear as expected. In December 1993, a team of astronauts repaired the Hubble Space Telescope by installing a set of small mirrors designed to correct images obtained by the faulty mirror. ...
System Definition - Mullard Space Science Laboratory
... Quick-look data analysis workstations Operational data center workstations ...
... Quick-look data analysis workstations Operational data center workstations ...
Instruction Manual
... The magnification, or power of a telescope is determined by two factors: the focal length of the eyepiece and the focal length of the telescope. Your telescope is supplied with one eyepiece. The focal length of the eyepiece, 26mm, is printed on its side. Telescope focal length is the distance that l ...
... The magnification, or power of a telescope is determined by two factors: the focal length of the eyepiece and the focal length of the telescope. Your telescope is supplied with one eyepiece. The focal length of the eyepiece, 26mm, is printed on its side. Telescope focal length is the distance that l ...
Antares Palette - Astrodoc: Astrophotography by Ron Brecher
... followed in short order by better eyepieces, more books on astronomy, and if there was any money left, some camp gear for the inevitable summer star parties. The Huronia Star Party and Starfest were Ron’s launch pads. Those events provided him with the initial contacts and background to improve his ...
... followed in short order by better eyepieces, more books on astronomy, and if there was any money left, some camp gear for the inevitable summer star parties. The Huronia Star Party and Starfest were Ron’s launch pads. Those events provided him with the initial contacts and background to improve his ...
EF Eri: Its White Dwarf Primary and L Dwarf Secondary
... The Optical Spectrum during the LOW STATE: H emission faded quickly after 1997. Five years into the low state, EF Eri’s optical spectrum shows Zeeman split Balmer absorption lines caused by the WD B field and NO emission lines. No secondary star features are detected. Note non-BB WD shape. ...
... The Optical Spectrum during the LOW STATE: H emission faded quickly after 1997. Five years into the low state, EF Eri’s optical spectrum shows Zeeman split Balmer absorption lines caused by the WD B field and NO emission lines. No secondary star features are detected. Note non-BB WD shape. ...
The Birth, Life, and Death of Stars
... How do massive stars explode? ? What are the remnants of such stellar explosions? What prevents all stars from dying as black holes? What is the minimum mass of a black hole? ? What is role of FSU researchers in answering these questions? ...
... How do massive stars explode? ? What are the remnants of such stellar explosions? What prevents all stars from dying as black holes? What is the minimum mass of a black hole? ? What is role of FSU researchers in answering these questions? ...
APOD Wall Calendar 2015 General: All Topics
... the robot Cassini spacecraft now orbiting Saturn. Here Saturn's majestic rings appear directly only as a thin vertical line. The rings show their complex structure in the dark shadows they create on the image left. Saturn's fountain moon Enceladus, only about 500 kilometers across, is seen as the bu ...
... the robot Cassini spacecraft now orbiting Saturn. Here Saturn's majestic rings appear directly only as a thin vertical line. The rings show their complex structure in the dark shadows they create on the image left. Saturn's fountain moon Enceladus, only about 500 kilometers across, is seen as the bu ...
Comet Lulin - indstate.edu
... Since Comet Lulin will be moving opposite the motion of the Earth, it will appear to approach us and move away especially fast. Beginning in February 2009, Comet Lulin will rise at about midnight local time, and will be about 6th or 7th magnitude. This won't be bright enough to go out and look at ...
... Since Comet Lulin will be moving opposite the motion of the Earth, it will appear to approach us and move away especially fast. Beginning in February 2009, Comet Lulin will rise at about midnight local time, and will be about 6th or 7th magnitude. This won't be bright enough to go out and look at ...
-200 0 200 -200 0 200 -200 0 200 ∆ T ( µ K ) -200
... verify our past results and to provide an additional check on telescope pointing. The new fields were selected by offsetting the telescope in elevation and right ascension from the original PyI field in steps of one-third of the separation between the detectors in the array (0.92° on the sky). Two n ...
... verify our past results and to provide an additional check on telescope pointing. The new fields were selected by offsetting the telescope in elevation and right ascension from the original PyI field in steps of one-third of the separation between the detectors in the array (0.92° on the sky). Two n ...
Project 3. Colour in Astronomy
... M50, but most of the dimmer, red stars do not. M50 lies about 3000 light‐years from Earth and is about 20 light years across. Magnitude is a number that measures the brightness of a star or galaxy. In magnitude, higher numbers correspond to fainter objects, lower numbers to ...
... M50, but most of the dimmer, red stars do not. M50 lies about 3000 light‐years from Earth and is about 20 light years across. Magnitude is a number that measures the brightness of a star or galaxy. In magnitude, higher numbers correspond to fainter objects, lower numbers to ...
an idl tool for interferometric visibility computations
... Data Language) program for this latter scope is currently under developing by the Rome Astronomical Observatory. It can be used both as a standing alone tool, equipped of a Graphical User Interface (GUI), or as a subroutine to be used inside the user’s modelling code. The program aim is to calculate ...
... Data Language) program for this latter scope is currently under developing by the Rome Astronomical Observatory. It can be used both as a standing alone tool, equipped of a Graphical User Interface (GUI), or as a subroutine to be used inside the user’s modelling code. The program aim is to calculate ...
Gaia talk
... Launch burned 225tonnes of kerosene+oxygen in 5 minutes In orbit micro-propulsion system ejects 1 microgram of nitrogen per thrust Gaia measures 40 million stars per day on average 60 million stars will have 6-D space motions Total number of measurements: 1,000,000,000,000 ...
... Launch burned 225tonnes of kerosene+oxygen in 5 minutes In orbit micro-propulsion system ejects 1 microgram of nitrogen per thrust Gaia measures 40 million stars per day on average 60 million stars will have 6-D space motions Total number of measurements: 1,000,000,000,000 ...
V = 3 d3 = 4188.8 pc N = ρV = 0.1 pc χ 4188.8 pc = 419
... Since more massive stars have shorter lifetimes, we conclude that stars more massive than about 1.9 times the mass of the Sun will have lifetimes that are too short to allow intelligent life to evolve. Answer c) Stars with mass greater than about 1.9 times the mass of the Sun. For the following thre ...
... Since more massive stars have shorter lifetimes, we conclude that stars more massive than about 1.9 times the mass of the Sun will have lifetimes that are too short to allow intelligent life to evolve. Answer c) Stars with mass greater than about 1.9 times the mass of the Sun. For the following thre ...
Ronald`s presentation
... JWST will have launched in 2013, fulfilled its 5 year prime mission and be on its way to its 10-year lifetime goal New “infrastructure” elements and technologies are changing the architectural approaches to big space telescopes Bigger launch vehicles: EELV Heavy and Ares V Advanced optics te ...
... JWST will have launched in 2013, fulfilled its 5 year prime mission and be on its way to its 10-year lifetime goal New “infrastructure” elements and technologies are changing the architectural approaches to big space telescopes Bigger launch vehicles: EELV Heavy and Ares V Advanced optics te ...
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 ...
Operations of the Keck AO
... Go to next object Acquire star on WFS Etc.. Run Halt AO script ...
... Go to next object Acquire star on WFS Etc.. Run Halt AO script ...
NASA-TV Highlights
... and planets are 4.6 billion years old. The age record for people who occasionally glance at the sky might be Arcturus, about 7 billion years old. But with a pair of binoculars, you can pick up the 7.2-magnitude star HD 140283 in Libra, the constellation that houses Saturn these evenings. This star i ...
... and planets are 4.6 billion years old. The age record for people who occasionally glance at the sky might be Arcturus, about 7 billion years old. But with a pair of binoculars, you can pick up the 7.2-magnitude star HD 140283 in Libra, the constellation that houses Saturn these evenings. This star i ...
Packet 3
... Problem: What types of visible spectra are emitted from glowing objects? Background information: Astronomers have learned about our universe through the study of light given off by stars. Therefore it is important to understand light. In 1665 Newton observed that when white light passes through a pr ...
... Problem: What types of visible spectra are emitted from glowing objects? Background information: Astronomers have learned about our universe through the study of light given off by stars. Therefore it is important to understand light. In 1665 Newton observed that when white light passes through a pr ...
Optical Metrology for Large Telescopes
... “Meter-class” describes a category of telescopes with optical elements larger than one meter in diameter, typically operating within the infrared through visible spectra. The primary and secondary optics may be monolithic glass structures or may consist of multiple segments that can be actively alig ...
... “Meter-class” describes a category of telescopes with optical elements larger than one meter in diameter, typically operating within the infrared through visible spectra. The primary and secondary optics may be monolithic glass structures or may consist of multiple segments that can be actively alig ...
SAGE_prop
... Beyond the provision of light and heat, the correlation between the occurrence of sunspots and displays of spectacular aurora gave us early clues to the existence of a chain of events linking solar phenomena to a terrestrial response. Proctor in 1870 described an event where at a station in Norway “ ...
... Beyond the provision of light and heat, the correlation between the occurrence of sunspots and displays of spectacular aurora gave us early clues to the existence of a chain of events linking solar phenomena to a terrestrial response. Proctor in 1870 described an event where at a station in Norway “ ...
Night Sky
... but also how much of the most dangerous aspects of the universe are also necessary for life. but before we get to the killer and nurturing aspects of the sky, the extreme and unusual events -- that’s the rest of the course, we need to have a basic understanding of the everyday and every night sky--t ...
... but also how much of the most dangerous aspects of the universe are also necessary for life. but before we get to the killer and nurturing aspects of the sky, the extreme and unusual events -- that’s the rest of the course, we need to have a basic understanding of the everyday and every night sky--t ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.