Navigating the Sky with My Telescope: Do the Planets Revolve
... I determined that the full cycle of phases of Venus doesn't exist in Ptolemy's geocentric system and has only new and crescent phases. My observations didn't support Ptolemy system. I determined that in Aristotle's geocentric system, Venus would have complete phases, but the apparent size would not ...
... I determined that the full cycle of phases of Venus doesn't exist in Ptolemy's geocentric system and has only new and crescent phases. My observations didn't support Ptolemy system. I determined that in Aristotle's geocentric system, Venus would have complete phases, but the apparent size would not ...
Physics 1025: Lecture 7 Properties of light (con`t), n, Dispersion
... The size of the telescopic image is directly proportional to the focal length of the objective. Another useful formula for lenses from lab: 1/So + 1/Si = 1/f There are four main types of telescopes: refractors, reflectors, Schmidt camera, and radio telescopes (plus many exotic new gamma-ray, x-ray, ...
... The size of the telescopic image is directly proportional to the focal length of the objective. Another useful formula for lenses from lab: 1/So + 1/Si = 1/f There are four main types of telescopes: refractors, reflectors, Schmidt camera, and radio telescopes (plus many exotic new gamma-ray, x-ray, ...
8.1 Touring the Night Sky Pg. 308 #1
... 4. Terrestrial planets are the 4 planets closest to the Sun. They have rocky surfaces similar to Earth’s. The next four planets are known as gas giants. They are called that because they are mostly made up of gases and liquids. 5. The difference between stars and planets are; stars are massive colle ...
... 4. Terrestrial planets are the 4 planets closest to the Sun. They have rocky surfaces similar to Earth’s. The next four planets are known as gas giants. They are called that because they are mostly made up of gases and liquids. 5. The difference between stars and planets are; stars are massive colle ...
SUPERSHARP – a proposal to ESA
... How can we make SUPERSHARP affordable? • Build it in Europe: If you compare like-for-like, ESA missions are probably less expensive than NASA ones. • Relax the instrument contrast requirement: US studies argue that a speckle contrast of 10-10 is needed but recent ground based observations suggest t ...
... How can we make SUPERSHARP affordable? • Build it in Europe: If you compare like-for-like, ESA missions are probably less expensive than NASA ones. • Relax the instrument contrast requirement: US studies argue that a speckle contrast of 10-10 is needed but recent ground based observations suggest t ...
A105 Stars and Galaxies
... super-massive black hole at its center! “A supermassive black hole at the center of our galaxy is adequate to explain the observations that have been seen.” ...
... super-massive black hole at its center! “A supermassive black hole at the center of our galaxy is adequate to explain the observations that have been seen.” ...
Than Our Eyes Can See - Cool Cosmos
... Apart from the local Solar System, everything we know about the Universe and its phenomena is a result of the capture and study of radiation emitted by distant objects. In a sense, astronomy is a field where only remote sensing provides the data upon which our theories and knowledge rest. After trav ...
... Apart from the local Solar System, everything we know about the Universe and its phenomena is a result of the capture and study of radiation emitted by distant objects. In a sense, astronomy is a field where only remote sensing provides the data upon which our theories and knowledge rest. After trav ...
An earthllke planet would have a rocky mantle surround
... 10,000 times higher if Jupiter weren't present to deflect comets from the Kuiper Belt and Oort Cloud. Saturn, at less than one-third the mass of Jupiter, would be marginally effective. How abundant are "[upiters" as "protector planets?" A detailed 2008 survey of Orion Nebula stars by Joshua Eisner, ...
... 10,000 times higher if Jupiter weren't present to deflect comets from the Kuiper Belt and Oort Cloud. Saturn, at less than one-third the mass of Jupiter, would be marginally effective. How abundant are "[upiters" as "protector planets?" A detailed 2008 survey of Orion Nebula stars by Joshua Eisner, ...
Views of the Solar System : History of Astronomy
... Thought the planets and stars moved around the Earth in perfect circles ...
... Thought the planets and stars moved around the Earth in perfect circles ...
Astronomical Imaging - RIT Center for Imaging Science
... – Wavelengths are much longer than visible light • millimeters (and longer) vs. hundreds of nanometers ...
... – Wavelengths are much longer than visible light • millimeters (and longer) vs. hundreds of nanometers ...
Instruments
... (1) Study of the nearby intergalactic medium using quasar absorption lines to determine the properties of the intergalactic medium and the gaseous content of galaxies and groups of galaxies (2) Medium deep survey using the Wide Field Camera to take data whenever one of the other instruments was bein ...
... (1) Study of the nearby intergalactic medium using quasar absorption lines to determine the properties of the intergalactic medium and the gaseous content of galaxies and groups of galaxies (2) Medium deep survey using the Wide Field Camera to take data whenever one of the other instruments was bein ...
Unit E Space Exploration Section 1 Notnd Space has changed over
... groupings of stars but are not officially recognized as constellations. ...
... groupings of stars but are not officially recognized as constellations. ...
Optical Telescopes and Instrumentation by Christian Clemens
... array of four 8.2 meters unit telescopes wavelength range extends from near UV up to 25 micrometers in the infrared arranged in a quatrilateral configuration operated either in independent (mainly for highresolution spectroscopy) or in combined mode (for high resolution imaging) in combined mode: li ...
... array of four 8.2 meters unit telescopes wavelength range extends from near UV up to 25 micrometers in the infrared arranged in a quatrilateral configuration operated either in independent (mainly for highresolution spectroscopy) or in combined mode (for high resolution imaging) in combined mode: li ...
The Ultimate Tool of Astronomy: Telescopes
... Two identical stars are observed from the Earth. Star A’s emission lines (that are at visible wavelengths in the rest frame) are observed to be at ultraviolet wavelengths. The same emission lines for Star B are observed to be at X-ray wavelengths. From these ...
... Two identical stars are observed from the Earth. Star A’s emission lines (that are at visible wavelengths in the rest frame) are observed to be at ultraviolet wavelengths. The same emission lines for Star B are observed to be at X-ray wavelengths. From these ...
radio telescope
... Space telescopes orbit above Earth’s atmosphere and thus produce clearer images than Earth-based telescopes. Hubble Space Telescope • The first space telescope, built by NASA, was the Hubble Space Telescope. Hubble was put into orbit around Earth in April 1990. ...
... Space telescopes orbit above Earth’s atmosphere and thus produce clearer images than Earth-based telescopes. Hubble Space Telescope • The first space telescope, built by NASA, was the Hubble Space Telescope. Hubble was put into orbit around Earth in April 1990. ...
the young astronomers newsletter
... star in Hercules, a distance of 95 light years. This signal lasted for just 2 seconds, but is of special interest because the star, HD 164595, is of a class similar to our sun, and it has an exo planet orbiting it (but very close to the star, and presumably, very hot). The Russian astronomers did no ...
... star in Hercules, a distance of 95 light years. This signal lasted for just 2 seconds, but is of special interest because the star, HD 164595, is of a class similar to our sun, and it has an exo planet orbiting it (but very close to the star, and presumably, very hot). The Russian astronomers did no ...
Webb Space Telescope’s mirror are mounted for testing in an ultracold
... the telescope’s remote perch, no astronaut will be able to fix it if something goes wrong. Unlike with the Hubble, which has had several repairs and upgrades throughout the two decades it has been in operation, there will be no do-overs, no shuttle flight to correct an embarrassing optical flaw, no ...
... the telescope’s remote perch, no astronaut will be able to fix it if something goes wrong. Unlike with the Hubble, which has had several repairs and upgrades throughout the two decades it has been in operation, there will be no do-overs, no shuttle flight to correct an embarrassing optical flaw, no ...
Magnetic traces in meteorites
... and shape, which will aid future geological interpretation of surface data. And the magnetometry showed that Mercury’s magnetic field so far measured is symmetrical in eastern and western hemispheres. The Mercury Atmospheric and Surface Composition Spectrometer observed Mercury’s exosphere – its th ...
... and shape, which will aid future geological interpretation of surface data. And the magnetometry showed that Mercury’s magnetic field so far measured is symmetrical in eastern and western hemispheres. The Mercury Atmospheric and Surface Composition Spectrometer observed Mercury’s exosphere – its th ...
Applications of Light to Astronomy
... o Observing which wavelengths are missing after reflection tells you about the composition of the reflecting surface! o Observing which wavelengths are missing after passing through material (e.g. atmosphere of a planet or star) tells you about that material Most of the stuff in the universe is hy ...
... o Observing which wavelengths are missing after reflection tells you about the composition of the reflecting surface! o Observing which wavelengths are missing after passing through material (e.g. atmosphere of a planet or star) tells you about that material Most of the stuff in the universe is hy ...
Telescope: Angular Resolution
... • Refraction: as a beam of light passes from one transparent medium into another—say, from air into glass, or from glass back into air—the direction of the light can change • Refraction is caused by the change in the speed of light – Vacuum: 3.0 X 105 km/s – Glass: 2.0 X 105 km/s ...
... • Refraction: as a beam of light passes from one transparent medium into another—say, from air into glass, or from glass back into air—the direction of the light can change • Refraction is caused by the change in the speed of light – Vacuum: 3.0 X 105 km/s – Glass: 2.0 X 105 km/s ...
Starry Night¨ Times - October 2008
... (40x) to find the object, and then try 100x and 200x. The name "planetary" is misleading, as these objects are not planets at all but stars at the end of their life cycle. However, they do look something like cloudy planets, and this fact confused earlier observers whose incorrect naming convention ...
... (40x) to find the object, and then try 100x and 200x. The name "planetary" is misleading, as these objects are not planets at all but stars at the end of their life cycle. However, they do look something like cloudy planets, and this fact confused earlier observers whose incorrect naming convention ...
new_qwk11
... the Special Theory of Relativity B. The General Theory of Relativity was designed to explain situations where the speeds of objects are close to the speed of light C. The Special Theory of Relativity states that a moving ruler is measured to be longer than its twin ruler at rest D. The mass or inert ...
... the Special Theory of Relativity B. The General Theory of Relativity was designed to explain situations where the speeds of objects are close to the speed of light C. The Special Theory of Relativity states that a moving ruler is measured to be longer than its twin ruler at rest D. The mass or inert ...
Spitzer Space Telescope
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.