Part F
... Metal plates in a sealed box filled with a gas such as helium or neon. As gamma or particle travels through the detector, it ionises the gas between the plates. A trigger system consisting of two PMTs coupled to scintillators above and below box is used to apply high voltage to plates after the part ...
... Metal plates in a sealed box filled with a gas such as helium or neon. As gamma or particle travels through the detector, it ionises the gas between the plates. A trigger system consisting of two PMTs coupled to scintillators above and below box is used to apply high voltage to plates after the part ...
Refracting vs Reflecting Telescopes
... mirror area A = π (D/2)2 These properties are much more important than magnification which is produced by placing another lens - the eyepiece - at the mirror focus. Astronomers do not look through telescopes with their eyes - a light gathering detector (for instance a camera) records the image which ...
... mirror area A = π (D/2)2 These properties are much more important than magnification which is produced by placing another lens - the eyepiece - at the mirror focus. Astronomers do not look through telescopes with their eyes - a light gathering detector (for instance a camera) records the image which ...
Astronomy 104: Homework Set 6 Due: Wednesday, April 1, 2015
... Earth. Use the relation between brightness (flux), luminosity and distance (see Destination 7) to determine the ratio of the distance to M 31 and the distance of the LMC? If the LMC is 50 kpc distant, how far is M 31 from Earth? Is your result with 10% of the value for the distance of M31 given in D ...
... Earth. Use the relation between brightness (flux), luminosity and distance (see Destination 7) to determine the ratio of the distance to M 31 and the distance of the LMC? If the LMC is 50 kpc distant, how far is M 31 from Earth? Is your result with 10% of the value for the distance of M31 given in D ...
Mr. Traeger`s Light and Stars PowerPoint
... Cepheid Variable Stars can be used to measure long distances to stars. Cycles of brightness range from 1 to 50 days. A star with a cycle of 50 days would be brighter than a star with a brightness range of 1 day. Astronomers can calculate long distances by comparing a Cepheid’s apparent and absolute ...
... Cepheid Variable Stars can be used to measure long distances to stars. Cycles of brightness range from 1 to 50 days. A star with a cycle of 50 days would be brighter than a star with a brightness range of 1 day. Astronomers can calculate long distances by comparing a Cepheid’s apparent and absolute ...
Mirrored Image Sep06.pub - High Desert Astronomical Society
... west of Cebalrai (Beta Ophiuchi) near coordinates (17:57:48.5 +04:41:36.2, ICRS 2000.0). The star was named after its discoverer, noted astronomer Edward Emerson Barnard (1857-1923), who found in 1916 that the star has the largest known proper motion of all known stars (10.3 arcseconds per year). Th ...
... west of Cebalrai (Beta Ophiuchi) near coordinates (17:57:48.5 +04:41:36.2, ICRS 2000.0). The star was named after its discoverer, noted astronomer Edward Emerson Barnard (1857-1923), who found in 1916 that the star has the largest known proper motion of all known stars (10.3 arcseconds per year). Th ...
Hubble Space Telescope
... Learn about Hubble’s history, operations, and the team that makes it work. HUBBLE ESSENTIALS: Quick Facts 1. What was Edwin Hubble’s notable achievement which led to the space telescope being named after him? ...
... Learn about Hubble’s history, operations, and the team that makes it work. HUBBLE ESSENTIALS: Quick Facts 1. What was Edwin Hubble’s notable achievement which led to the space telescope being named after him? ...
Antarctic Infra-Red Telescope with a 40cm primary mirror
... because like the sun, Venus doesn’t set during summer in Antarctica. ...
... because like the sun, Venus doesn’t set during summer in Antarctica. ...
Deep Space Mystery Note Form 2
... expanding gases to glow briefly and brightly. During this short interval, a supernova can radiate as much energy as our Sun could emit over its life span. The explosion expels much or all of the star’s material and causes a shock wave into the surrounding interstellar medium. The interstellar medium ...
... expanding gases to glow briefly and brightly. During this short interval, a supernova can radiate as much energy as our Sun could emit over its life span. The explosion expels much or all of the star’s material and causes a shock wave into the surrounding interstellar medium. The interstellar medium ...
A light microscope works very much like a refracting telescope, but
... In contrast to a telescope, a microscope must gather light from a tiny area of a thin, wellilluminated specimen that is close-by. So the microscope does not need a large objective lens. Instead, the objective lens of a microscope is small and spherical, which means that it has a much shorter focal l ...
... In contrast to a telescope, a microscope must gather light from a tiny area of a thin, wellilluminated specimen that is close-by. So the microscope does not need a large objective lens. Instead, the objective lens of a microscope is small and spherical, which means that it has a much shorter focal l ...
Two Looks at the Visual and Imaging Perfomance of the VISAC
... same that is paired with the VC200L when purchased as a package. I can sum up my impressions of the mount this way: smooth, solid, and Xbox meets astronomy. The Star Book is a fantastic product and the mount/tripod combination a very well engineered machine. But, that is another review for another t ...
... same that is paired with the VC200L when purchased as a package. I can sum up my impressions of the mount this way: smooth, solid, and Xbox meets astronomy. The Star Book is a fantastic product and the mount/tripod combination a very well engineered machine. But, that is another review for another t ...
THE PALE ORANGE DOT: SPECTRA AND CLIMATES OF HAZY
... This is true even for a surface atmospheric pressure half of today’s. We note 273 K is not a hard limit for planetary habitability because planets with surface temperatures of 260 K have been shown to have stable open ocean fractions of ~50% [8]. Thus, even thicker hazes may not preclude habitabilit ...
... This is true even for a surface atmospheric pressure half of today’s. We note 273 K is not a hard limit for planetary habitability because planets with surface temperatures of 260 K have been shown to have stable open ocean fractions of ~50% [8]. Thus, even thicker hazes may not preclude habitabilit ...
Dim Stars - granthamkuehl
... The largest stars, giant stars have a mass of about 60 times the mass of the Sun. ...
... The largest stars, giant stars have a mass of about 60 times the mass of the Sun. ...
Comets and Mass Extinction
... • In March 1993 astronomers Shoemaker and Levy discovered a comet orbiting Jupiter that collided with on July 16, 1994. A large fireball, easily observable from the spacecraft Galileo, brought the atmospheric temperature in the region of impact up from 130 K to 24,000 K. Fragments continued to rain ...
... • In March 1993 astronomers Shoemaker and Levy discovered a comet orbiting Jupiter that collided with on July 16, 1994. A large fireball, easily observable from the spacecraft Galileo, brought the atmospheric temperature in the region of impact up from 130 K to 24,000 K. Fragments continued to rain ...
PDF version - Caltech Astronomy
... 왘 The periods of the planetary orbits increase as the 3/2 power of their semimajor axes. The last of these findings was the first quantitative relationship between two observational parameters in astronomy. It constituted what one would call a well-posed question: Why does Kepler’s third law hold? W ...
... 왘 The periods of the planetary orbits increase as the 3/2 power of their semimajor axes. The last of these findings was the first quantitative relationship between two observational parameters in astronomy. It constituted what one would call a well-posed question: Why does Kepler’s third law hold? W ...
Physics - Content by Unit
... Washington began a detailed study of the motion of stars in the nearby galaxy of Andromeda. Galaxies are so large that even stars traveling at 200 kilometers per second appear stationary; astronomers must measure their Doppler shifts to obtain their velocities. However, early measurements of stellar ...
... Washington began a detailed study of the motion of stars in the nearby galaxy of Andromeda. Galaxies are so large that even stars traveling at 200 kilometers per second appear stationary; astronomers must measure their Doppler shifts to obtain their velocities. However, early measurements of stellar ...
Astronomy 101 Exam 3, Form A Name: SUID: Lab section number:
... • Students who do not speak English well may use a translation dictionary. • If you have a question, raise your hand, and a proctor will assist you. • Do not attempt to communicate with anyone other than teaching staff during the exam. • This exam has 27 multiple choice questions worth 3 points each ...
... • Students who do not speak English well may use a translation dictionary. • If you have a question, raise your hand, and a proctor will assist you. • Do not attempt to communicate with anyone other than teaching staff during the exam. • This exam has 27 multiple choice questions worth 3 points each ...
The Focal Point - Atlanta Astronomy Club
... "One of the biggest mysteries confronting Cassini is the changes we've seen in Saturn's radio emissions" said Dr. Bill Kurth, Cassini scientist at the University of Iowa, Iowa City. "We've seen the radio period, the frequency of emissions that tell scientists how fast or slow the planet is rotating, ...
... "One of the biggest mysteries confronting Cassini is the changes we've seen in Saturn's radio emissions" said Dr. Bill Kurth, Cassini scientist at the University of Iowa, Iowa City. "We've seen the radio period, the frequency of emissions that tell scientists how fast or slow the planet is rotating, ...
CASPEC Observations of the Most Metal-Deficient Main
... uvby-(3 photometry. The remarkable line weakness of CS 22876-32 is obvious and there is no doubt that the star is a binary. From the equivalent widths measured, the magnesium abundance of CS 22876-32 is estimated to be 1/10000 of the solar magnesium abundance i.e. [MgIH] = -4.0. This is an order of ...
... uvby-(3 photometry. The remarkable line weakness of CS 22876-32 is obvious and there is no doubt that the star is a binary. From the equivalent widths measured, the magnesium abundance of CS 22876-32 is estimated to be 1/10000 of the solar magnesium abundance i.e. [MgIH] = -4.0. This is an order of ...
Slide 1
... Network of wide field imager Earth Hunter + OGLE-IV + MOA-2 2011+ ? Statistics on Cool Earth mass planets, possibly habitable zone. NASA mission MPF ( PI Bennett) to be re-submitted ? ESA DUNE mission (cosmic shear + 3 months/Yr of planet search ) Abundance of planets in habitable zone. MPF : 36 mon ...
... Network of wide field imager Earth Hunter + OGLE-IV + MOA-2 2011+ ? Statistics on Cool Earth mass planets, possibly habitable zone. NASA mission MPF ( PI Bennett) to be re-submitted ? ESA DUNE mission (cosmic shear + 3 months/Yr of planet search ) Abundance of planets in habitable zone. MPF : 36 mon ...
DTU_9e_ch02 - University of San Diego Home Pages
... force with which the gravity of a world pulls on an object’s mass when the two objects are at rest with respect to each other (or, equivalently, how much the object pushes down on a scale). The path of one astronomical object around another, such as that of a comet around the Sun, is an ellipse, a p ...
... force with which the gravity of a world pulls on an object’s mass when the two objects are at rest with respect to each other (or, equivalently, how much the object pushes down on a scale). The path of one astronomical object around another, such as that of a comet around the Sun, is an ellipse, a p ...
Focus Week: Messengers of Supernova Explosions
... Focus Week: Messengers of Supernova Explosions Ken’ ichi Nomoto Principal Investigator ...
... Focus Week: Messengers of Supernova Explosions Ken’ ichi Nomoto Principal Investigator ...
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.