Chapter 1 Telescopes 1.1 Lenses
... This is why many more stars are seen using a telescope than using the unaided eye. The greater the diameter of the objective of a telescope, the greater the number of stars that can be seen. Planets and other astronomical objects in the solar system are magnified using a telescope (unlike stars whic ...
... This is why many more stars are seen using a telescope than using the unaided eye. The greater the diameter of the objective of a telescope, the greater the number of stars that can be seen. Planets and other astronomical objects in the solar system are magnified using a telescope (unlike stars whic ...
Galaxies – Island universes
... the first billion years or so after the Big Bang • Many have later infalling matter which has been pulled on by nearby mass and thus doesn’t fall straight in. It settles into a rotating disk, arranging itself into a flat, roughly circularly orbiting plane of material • This material gradually conden ...
... the first billion years or so after the Big Bang • Many have later infalling matter which has been pulled on by nearby mass and thus doesn’t fall straight in. It settles into a rotating disk, arranging itself into a flat, roughly circularly orbiting plane of material • This material gradually conden ...
Star Formation - Leslie Looney
... –! Blows away most of its natal circumstellar material. –! Becomes a star on the main sequence of the HR diagram, –! For low mass stars, this whole process can take a few 106 years. –! Expect to see a large number of embedded protostars. ...
... –! Blows away most of its natal circumstellar material. –! Becomes a star on the main sequence of the HR diagram, –! For low mass stars, this whole process can take a few 106 years. –! Expect to see a large number of embedded protostars. ...
This is an introduction to infrared spectroscopy
... Benzene, for example, has its highest absorption wavelength at 254 nm. A benzene with an amino substituent absorbs only a little higher, at 280 nm. However, there are some combinations of substituents which give rise to an unusually large "red shift". This is the case when an electron-donating and a ...
... Benzene, for example, has its highest absorption wavelength at 254 nm. A benzene with an amino substituent absorbs only a little higher, at 280 nm. However, there are some combinations of substituents which give rise to an unusually large "red shift". This is the case when an electron-donating and a ...
January 2015 - Newbury Astronomical Society
... south during the early evening. Located at the centre of Taurus is the bright red giant star Aldebaran which is surrounded by the dispersed stars of the large Open Cluster ‘the Hyades’. The stars of the Hyades are so scattered that they are not included in the Messier Catalogue. Taurus can be seen a ...
... south during the early evening. Located at the centre of Taurus is the bright red giant star Aldebaran which is surrounded by the dispersed stars of the large Open Cluster ‘the Hyades’. The stars of the Hyades are so scattered that they are not included in the Messier Catalogue. Taurus can be seen a ...
INSTRUCTION MANUAL Orion® SpaceProbe 130mm EQ
... are flush with the inside diameter of the bracket. Place the O-ring that comes on the base of the bracket over the body of the finder scope until it seats into the slot on the middle of the finder scope. Slide the eyepiece end (narrow end) of the finder scope into the end of the bracket’s cylinder o ...
... are flush with the inside diameter of the bracket. Place the O-ring that comes on the base of the bracket over the body of the finder scope until it seats into the slot on the middle of the finder scope. Slide the eyepiece end (narrow end) of the finder scope into the end of the bracket’s cylinder o ...
Lab 6 - College of San Mateo
... the normal line, or about 35° to 40° with the face of the prism. (A spectrum may also be seen using light at normal incidence to the first face of the prism, but this light reflects internally from the base of the prism, and does not show minimum deviation.) Move the telescope until you see the spec ...
... the normal line, or about 35° to 40° with the face of the prism. (A spectrum may also be seen using light at normal incidence to the first face of the prism, but this light reflects internally from the base of the prism, and does not show minimum deviation.) Move the telescope until you see the spec ...
orion® StarBlast 6 astro telescope
... You may find it convenient to hold one hand on one of the carrying handles (10) to steady it while moving and aiming the telescope. Note About the Altitude Tension Adjustment Knob When aiming the telescope in altitude, you may find the optical tube (3) is either too hard to move or does not stay in ...
... You may find it convenient to hold one hand on one of the carrying handles (10) to steady it while moving and aiming the telescope. Note About the Altitude Tension Adjustment Knob When aiming the telescope in altitude, you may find the optical tube (3) is either too hard to move or does not stay in ...
Bright versus Nearby Stars
... Absolute Magnitudes of 269 Bright Stars • 95% of the brightest stars are more luminous than the Sun. • The average absolute magnitude of a bright star is –1.2, equivalent to 300 solar luminosities. ...
... Absolute Magnitudes of 269 Bright Stars • 95% of the brightest stars are more luminous than the Sun. • The average absolute magnitude of a bright star is –1.2, equivalent to 300 solar luminosities. ...
What is X-ray Astronomy? - High Energy Astrophysics
... Launched 5 years ago 23 July 1999 revolutionized X-ray astronomy, and all of astronomy. What is X-ray Astronomy? What is Chandra? Why has Chandra done its job so ...
... Launched 5 years ago 23 July 1999 revolutionized X-ray astronomy, and all of astronomy. What is X-ray Astronomy? What is Chandra? Why has Chandra done its job so ...
Axial Resolution of Adaptive Optics Scanning Laser
... Indirect detection of more than 100 planets via radial velocity measurements is one of the most important astronomical developments of the past decade. Direct imaging of extrasolar planets — seeing photons they emit or reflect — is the next major step, allowing us to potentially detect giant planets ...
... Indirect detection of more than 100 planets via radial velocity measurements is one of the most important astronomical developments of the past decade. Direct imaging of extrasolar planets — seeing photons they emit or reflect — is the next major step, allowing us to potentially detect giant planets ...
Exploring the Variable Sky with the Catalina Real-Time
... mine that data set. Light curves are generated on demand for transient sources, blazars, etc. ...
... mine that data set. Light curves are generated on demand for transient sources, blazars, etc. ...
Altitude and Azimuth 4 page
... Astronomers require a coordinate system for the sky to find objects in the same way that a navigator or geographer needs a coordinate system to find objects on the Earth. Navigators and geographers use latitude and longitude to find their way around on the surface of the Earth. Astronomers, though, ...
... Astronomers require a coordinate system for the sky to find objects in the same way that a navigator or geographer needs a coordinate system to find objects on the Earth. Navigators and geographers use latitude and longitude to find their way around on the surface of the Earth. Astronomers, though, ...
ph507lecnote06
... Technological advances (including the Hubble Space Telescope) have improved parallax accuracy to 0.001” within a few years. Before 1990, fewer than 10,000 stellar parallaxes had been measured (and only 500 known well), but there are about 1012 stars in our Galaxy. Space observations made by the Euro ...
... Technological advances (including the Hubble Space Telescope) have improved parallax accuracy to 0.001” within a few years. Before 1990, fewer than 10,000 stellar parallaxes had been measured (and only 500 known well), but there are about 1012 stars in our Galaxy. Space observations made by the Euro ...
Facilitator`s Guide
... There are many “measuring sticks” that are used to measure distance in astronomy. They are placed in order on what is called the Distance Ladder. Some of the “rungs” on this ladder are named as follows: Parallax, Spectroscopic parallax, star clusters, Cepheid Variable Stars, Type Ia Supernovae The p ...
... There are many “measuring sticks” that are used to measure distance in astronomy. They are placed in order on what is called the Distance Ladder. Some of the “rungs” on this ladder are named as follows: Parallax, Spectroscopic parallax, star clusters, Cepheid Variable Stars, Type Ia Supernovae The p ...
A dust ring around Epsilon Eridani: analogue to the young Solar
... P-R drag, grains ∼ 1 mm in diameter would have been cleared only to radii of about 15 AU (Jura 1990), even if the star is as old as 1 Gyr. Thus it would be difficult to reproduce clearing out to the observed 35 AU. Also, P-R drag naturally produces a 1/r density distribution as small grains spiral i ...
... P-R drag, grains ∼ 1 mm in diameter would have been cleared only to radii of about 15 AU (Jura 1990), even if the star is as old as 1 Gyr. Thus it would be difficult to reproduce clearing out to the observed 35 AU. Also, P-R drag naturally produces a 1/r density distribution as small grains spiral i ...
Chapter 17
... C. From the "fixed basis" of globular clusters in the galactic halo. D. From the proper motions of nearby open clusters. 16. The reason we can use RR-Lyrae stars to find our distance from the Galaxy's center is: A. of their period-luminosity relation. B. they are all at the same distance. C. they ar ...
... C. From the "fixed basis" of globular clusters in the galactic halo. D. From the proper motions of nearby open clusters. 16. The reason we can use RR-Lyrae stars to find our distance from the Galaxy's center is: A. of their period-luminosity relation. B. they are all at the same distance. C. they ar ...
PPT
... If the speed of light were half what it is now, then a “lightyear” would a) take half as long to traverse at light speed b) take the same amount of time to traverse at light speed c) last twice as many months d) last half as many months ...
... If the speed of light were half what it is now, then a “lightyear” would a) take half as long to traverse at light speed b) take the same amount of time to traverse at light speed c) last twice as many months d) last half as many months ...
Galaxies - Indiana University Astronomy
... Using the same website as above, click on “spectrum” for the two galaxies whose distances you measured. The optical spectrum of the galaxy is shown at the top of the spectrum page. Shown are many different spectral features, including absorption lines and emission lines, superimposed on continuum em ...
... Using the same website as above, click on “spectrum” for the two galaxies whose distances you measured. The optical spectrum of the galaxy is shown at the top of the spectrum page. Shown are many different spectral features, including absorption lines and emission lines, superimposed on continuum em ...
Name:
... diagram is shown to the upper right. Note that is a graph showing luminosity versus temperature. Note, too, that the luminosity is in terms of solar luminosities (Lo). That is, if a star has a luminosity of 10Lo, it will be ten times brighter than our sun. The temperature is given in Kelvins (K), a ...
... diagram is shown to the upper right. Note that is a graph showing luminosity versus temperature. Note, too, that the luminosity is in terms of solar luminosities (Lo). That is, if a star has a luminosity of 10Lo, it will be ten times brighter than our sun. The temperature is given in Kelvins (K), a ...
The Fate of the X-ray Emitting Gas in the Early
... A few of the GMAs are obviously correlated with dust. A few of GMAs trace the dust filament to the NW. Many GMAs are not associated with dust or Ha emission. ...
... A few of the GMAs are obviously correlated with dust. A few of GMAs trace the dust filament to the NW. Many GMAs are not associated with dust or Ha emission. ...
JWST_eye - University of Arizona
... and Rigel in Orion have much different colors. The color of Betelgeuse is ________. The color of Rigel is ________. The color of stars in the Pleiades is ______. JWST is designed to sense “infrared” colors of light about 3-30 times redder than the limit of the human eye. Infrared light penetrates in ...
... and Rigel in Orion have much different colors. The color of Betelgeuse is ________. The color of Rigel is ________. The color of stars in the Pleiades is ______. JWST is designed to sense “infrared” colors of light about 3-30 times redder than the limit of the human eye. Infrared light penetrates in ...
Fulltext PDF - Indian Academy of Sciences
... Figure 4. (a) If the angular velocity Ω was constant, then a given region of the galaxy would retain the same shape and only change in orientation. In this case, there would be no change in the distance between the Sun and any star. Hence there would be no Doppler shift. However, there would be prop ...
... Figure 4. (a) If the angular velocity Ω was constant, then a given region of the galaxy would retain the same shape and only change in orientation. In this case, there would be no change in the distance between the Sun and any star. Hence there would be no Doppler shift. However, there would be prop ...
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.