Chpt 26- Studying Space:
... • telescope an instrument that collects electromagnetic radiation from the sky and concentrates it for better observation. • In 1609, an Italian scientist, Galileo, heard of a device that used two lenses to make distant objects appear closer. • Telescopes that collect only visible light are called o ...
... • telescope an instrument that collects electromagnetic radiation from the sky and concentrates it for better observation. • In 1609, an Italian scientist, Galileo, heard of a device that used two lenses to make distant objects appear closer. • Telescopes that collect only visible light are called o ...
Milky Way Galaxy
... (near center) • Probably formed early in universe history – Gas clouds and stars probably collided, formed a massive object, and then collapsed ...
... (near center) • Probably formed early in universe history – Gas clouds and stars probably collided, formed a massive object, and then collapsed ...
Light Collection Magnitude limit of 14” scope
... •Hipparcos satellite measurement accuracy approaches 0.001” for over 118,000 stars. This corresponds to a a distance of only 1000 pc (only 1/8 of way to center of our galaxy) •The planned Space Interferometry Mission will be able to determine parallax angles as small as 4 microarcsec = 0.000004”) le ...
... •Hipparcos satellite measurement accuracy approaches 0.001” for over 118,000 stars. This corresponds to a a distance of only 1000 pc (only 1/8 of way to center of our galaxy) •The planned Space Interferometry Mission will be able to determine parallax angles as small as 4 microarcsec = 0.000004”) le ...
Lab 2
... In this lab, you will be asked to take spectra with the 24” SBO spectrograph. The goal is to obtain descent high signal-to-noise spectra of stars having a variety of properties. One of the stars, Vega, will be used for “spectral flat-fielding” the other spectra. The data resulting from this exercise ...
... In this lab, you will be asked to take spectra with the 24” SBO spectrograph. The goal is to obtain descent high signal-to-noise spectra of stars having a variety of properties. One of the stars, Vega, will be used for “spectral flat-fielding” the other spectra. The data resulting from this exercise ...
ASTR 511 (O’Connell) FALL 2003 DUE FRIDAY SEPTEMBER 19
... good choice in the fall. Center it in the finder and, using a low power eyepiece, check that it is in the main telescope field and centered. A-2 Switch to a medium high power eyepiece (e.g. 20 mm) and recenter the star exactly by strongly defocusing the image until it becomes a huge donut that fills ...
... good choice in the fall. Center it in the finder and, using a low power eyepiece, check that it is in the main telescope field and centered. A-2 Switch to a medium high power eyepiece (e.g. 20 mm) and recenter the star exactly by strongly defocusing the image until it becomes a huge donut that fills ...
Lesson #5: Constellations - Center for Learning in Action
... Wrap the circle over the tube and secure it with a rubber band. Look through the tube at a light to see your constellation. Closure: Discuss the following questions as a class. What can stars be used for? Answer: You can use the Big Dipper to locate the direction of north and to tell time. What star ...
... Wrap the circle over the tube and secure it with a rubber band. Look through the tube at a light to see your constellation. Closure: Discuss the following questions as a class. What can stars be used for? Answer: You can use the Big Dipper to locate the direction of north and to tell time. What star ...
ppt
... •Highly elliptical: eccentricity = 0.72 •Semi-major axis = 26,554 km •Spends a long time over one hemisphere •Used for communications at high latitudes (Russia in particular) because equatorial geostationary has poor coverage at high latitude. •Used for spy satellites and ICBM early warning surveill ...
... •Highly elliptical: eccentricity = 0.72 •Semi-major axis = 26,554 km •Spends a long time over one hemisphere •Used for communications at high latitudes (Russia in particular) because equatorial geostationary has poor coverage at high latitude. •Used for spy satellites and ICBM early warning surveill ...
Document
... •Tried to estimate Rayleigh scattering due to ISM gas but determined it to be insignificant (because most obscuration is due to ISM dust absorption which has a smaller dependence) ...
... •Tried to estimate Rayleigh scattering due to ISM gas but determined it to be insignificant (because most obscuration is due to ISM dust absorption which has a smaller dependence) ...
Recurring Cost ROM
... particle energy, flux, and energy transfer characteristics of interest to NASA's Vision for Space Exploration. • It will build upon existing mature radiation sensor instruments flown aboard work-horse SEC missions such as ACE and SOHO (e.g., each instrument is relatively low mass (~5-30kg), requires ...
... particle energy, flux, and energy transfer characteristics of interest to NASA's Vision for Space Exploration. • It will build upon existing mature radiation sensor instruments flown aboard work-horse SEC missions such as ACE and SOHO (e.g., each instrument is relatively low mass (~5-30kg), requires ...
Measuring the Sun - Faculty Web Sites
... What did you or your group determine to be the diameter of the Sun? ACCEPTED VALUE 23,891,238 KM 100 EARTH RADII ...
... What did you or your group determine to be the diameter of the Sun? ACCEPTED VALUE 23,891,238 KM 100 EARTH RADII ...
14 Reflection and Refraction 14-1 The Speed of Light
... Light has both wave and particle properties. The exercises in this chapter deal with the wave nature of light. For a wave of wavelength and frequency f traveling at the speed of light, c, c f. The distance that light travels in a given amount of time can be represented by the equation d ct. ...
... Light has both wave and particle properties. The exercises in this chapter deal with the wave nature of light. For a wave of wavelength and frequency f traveling at the speed of light, c, c f. The distance that light travels in a given amount of time can be represented by the equation d ct. ...
PTYS/ASTR 206 – Section 2 – Spring 2006 Practice Exam 1 Note
... 5. Compared with visible light, gamma rays A. are like sound waves B. are lower frequency C. travel slower than the speed of light D. are shorter wavelength 6. At what part of the electromagnetic spectrum is the Sun's radiated energy a maximum? A. X-rays B. Ultraviolet C. Visible D. Infrared 7. Whe ...
... 5. Compared with visible light, gamma rays A. are like sound waves B. are lower frequency C. travel slower than the speed of light D. are shorter wavelength 6. At what part of the electromagnetic spectrum is the Sun's radiated energy a maximum? A. X-rays B. Ultraviolet C. Visible D. Infrared 7. Whe ...
Document
... in launching 1922–1923, of proved conclusively Telescope honor of Hubble) in 1990 onpart the Space that these (named nebulaeinwere much too distant to be of Shuttle, in were, low-Earth orbit taking photos of the Milkyremains Way and in fact, entire galaxies outside astronomical observations. our own ...
... in launching 1922–1923, of proved conclusively Telescope honor of Hubble) in 1990 onpart the Space that these (named nebulaeinwere much too distant to be of Shuttle, in were, low-Earth orbit taking photos of the Milkyremains Way and in fact, entire galaxies outside astronomical observations. our own ...
Slide 1 - Physics and Astronomy
... Infrared images of star-forming “nurseries” can reveal objects still shrouded in cocoons of gas and dust. ...
... Infrared images of star-forming “nurseries” can reveal objects still shrouded in cocoons of gas and dust. ...
Right Ascension
... In practice, the Hubble Space Telescope can achieve its diffractionlimited resolution, but the Keck could not, originally. This is because the Keck is on the surface of the Earth, underneath the atmosphere. The atmosphere is in constant motion, and this 'smears' images out a bit. It is the reason st ...
... In practice, the Hubble Space Telescope can achieve its diffractionlimited resolution, but the Keck could not, originally. This is because the Keck is on the surface of the Earth, underneath the atmosphere. The atmosphere is in constant motion, and this 'smears' images out a bit. It is the reason st ...
Today`s Powerpoint
... Further subdivision: BO - B9, GO - G9, etc. GO hotter than G9. Sun is a G2. ...
... Further subdivision: BO - B9, GO - G9, etc. GO hotter than G9. Sun is a G2. ...
1 Astronomical Measurements and Quantities 2 Astronomical Objects
... Spherical Trigonometry: radiants and steradians; rectangular-spherical coordinates transformations; equations of spherical triangles. Coordinates on the Earth. Celestial Coordinates: horizontal system; equatorial systems and the sidereal time; visibility of stars and circumpolar stars; ecliptic syst ...
... Spherical Trigonometry: radiants and steradians; rectangular-spherical coordinates transformations; equations of spherical triangles. Coordinates on the Earth. Celestial Coordinates: horizontal system; equatorial systems and the sidereal time; visibility of stars and circumpolar stars; ecliptic syst ...
joseph von fraunhofer (1787-1826)
... of the telescope by hand with screws, small oscillations will be introduced, which will be magnified in relation to the magnification of the telescope. Before the telescopes comes to rest, the star will have passed the field of view, making it possible almost only by pure chance to see it for a shor ...
... of the telescope by hand with screws, small oscillations will be introduced, which will be magnified in relation to the magnification of the telescope. Before the telescopes comes to rest, the star will have passed the field of view, making it possible almost only by pure chance to see it for a shor ...
1. a) Astronomers use the parallax method to measure
... 1. a) Astronomers use the parallax method to measure the distance to nearby stars, but we can’t use it to measure the distance to stars in other galaxies. Why not? Why isn’t the parallax method useful for measuring the distances to stars in other galaxies? They are so distant that the parallax is to ...
... 1. a) Astronomers use the parallax method to measure the distance to nearby stars, but we can’t use it to measure the distance to stars in other galaxies. Why not? Why isn’t the parallax method useful for measuring the distances to stars in other galaxies? They are so distant that the parallax is to ...
Document
... The aberration of light was discovered by James Bradley in 1725. It is caused by the finite speed of light versus the orbital speed of the earth. This combination causes us to see the star or the sun in a retarded position. Many scientists conclude that the speed of gravity must be very high or else ...
... The aberration of light was discovered by James Bradley in 1725. It is caused by the finite speed of light versus the orbital speed of the earth. This combination causes us to see the star or the sun in a retarded position. Many scientists conclude that the speed of gravity must be very high or else ...
The winter sky over Bosham
... the name itself is derived from the Arabic word ‘rijl’. Both are about ten million years old and near the end of their lives, but can you see a difference in colour? Rigel is a blue/white star roughly twice as hot as the Sun, whereas Betelgeuse is orange-red, showing it to be much cooler. Both stars ...
... the name itself is derived from the Arabic word ‘rijl’. Both are about ten million years old and near the end of their lives, but can you see a difference in colour? Rigel is a blue/white star roughly twice as hot as the Sun, whereas Betelgeuse is orange-red, showing it to be much cooler. Both stars ...
The Hubble Space Telescope - the first 10 years
... • Galaxies are believed start from small sub-clumps which through merging build themselves up to giant ellipticals and spirals. Here we see the merger of two giant spirals which will one day become a giant elliptical. The core of each galaxy is seen in red and most likely each core contains a giant ...
... • Galaxies are believed start from small sub-clumps which through merging build themselves up to giant ellipticals and spirals. Here we see the merger of two giant spirals which will one day become a giant elliptical. The core of each galaxy is seen in red and most likely each core contains a giant ...
Activities, In the Footsteps of Galileo
... concept of the universe. Before that pivotal moment, all astronomical knowledge had been gained through naked-eye observations. After that, our understanding of the universe grew dramatically, and telescopes became larger and more powerful, eventually giving us the spectacular views that we see toda ...
... concept of the universe. Before that pivotal moment, all astronomical knowledge had been gained through naked-eye observations. After that, our understanding of the universe grew dramatically, and telescopes became larger and more powerful, eventually giving us the spectacular views that we see toda ...
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.