The Final Flight of Atlantis - Westchester Amateur Astronomers
... inexpensive Meade Electronic Eyepiece, to shoot this image of the Sun. The scope was mounted on a Tech200/Giro-2 "track and train" drive. He captured a one-minute avi file using Deepsky Imaging on a netbook with an inexpensive USB-video adaptor. Larry ran the avi through Registax 5 to stack the imag ...
... inexpensive Meade Electronic Eyepiece, to shoot this image of the Sun. The scope was mounted on a Tech200/Giro-2 "track and train" drive. He captured a one-minute avi file using Deepsky Imaging on a netbook with an inexpensive USB-video adaptor. Larry ran the avi through Registax 5 to stack the imag ...
ted_2012_power_of_design
... Francisco–Oakland Bay Bridge was the ability to communicate to the general public how the world’s largest self-anchored suspension bridge would reshape the surrounding landscape. Engineering, manufacturing, and construction data was used to create contextual, photorealistic visualizations of the bri ...
... Francisco–Oakland Bay Bridge was the ability to communicate to the general public how the world’s largest self-anchored suspension bridge would reshape the surrounding landscape. Engineering, manufacturing, and construction data was used to create contextual, photorealistic visualizations of the bri ...
Stars: Their Life and Afterlife
... converting gravitational energy into thermal energy and radiation is known as KelvinHelmholtz contraction, after the two 19th-century physicists who proposed the idea as a mechanism for powering the Sun. After a few thousand years of gravitational contraction, a solar-mass protostar’s surface will r ...
... converting gravitational energy into thermal energy and radiation is known as KelvinHelmholtz contraction, after the two 19th-century physicists who proposed the idea as a mechanism for powering the Sun. After a few thousand years of gravitational contraction, a solar-mass protostar’s surface will r ...
December
... Fully one-third of the 1st magnitude stars visible in the sky (seven of twenty-one) are in the Winter Circle with Sirius, Procyon, Pollux - toss in 2nd magnitude Castor - Capella, Aldebaran, and Rigel on the periphery, and Betelgeuse located off-center. Although somewhat flattened, and thus more ell ...
... Fully one-third of the 1st magnitude stars visible in the sky (seven of twenty-one) are in the Winter Circle with Sirius, Procyon, Pollux - toss in 2nd magnitude Castor - Capella, Aldebaran, and Rigel on the periphery, and Betelgeuse located off-center. Although somewhat flattened, and thus more ell ...
Transcript - Chandra X
... Slide 7: More detailed information about the H-R diagram will be presented further along. Since the presentation of the deep sky objects includes their spectral class and luminosity classes, the H-R diagram terminology is given here for those unfamiliar with H-R diagrams. The H-R diagram is a plot ...
... Slide 7: More detailed information about the H-R diagram will be presented further along. Since the presentation of the deep sky objects includes their spectral class and luminosity classes, the H-R diagram terminology is given here for those unfamiliar with H-R diagrams. The H-R diagram is a plot ...
Double Stars in Scorpio`s Claws
... As summer approaches, mighty Scorpius rises higher each night in the south. While many are familiar with the brilliant red giant Antares (the ‘Rival of Mars’), the claws of Scorpio hold a wealth of double stars that are a rewarding challenge to any astronomer. Some of these are actual double stars ( ...
... As summer approaches, mighty Scorpius rises higher each night in the south. While many are familiar with the brilliant red giant Antares (the ‘Rival of Mars’), the claws of Scorpio hold a wealth of double stars that are a rewarding challenge to any astronomer. Some of these are actual double stars ( ...
The (Stellar) Parallax View
... The most basic technique is called the Stellar Parallax method. Everyone has seen parallax in action, even if they don’t know the word. Parallax is the apparent movement of an object against a background due to a change in the observer’s position. Here is a little experiment to demonstrate this effe ...
... The most basic technique is called the Stellar Parallax method. Everyone has seen parallax in action, even if they don’t know the word. Parallax is the apparent movement of an object against a background due to a change in the observer’s position. Here is a little experiment to demonstrate this effe ...
Life Cycle of a Star
... Although some white dwarfs are no larger than the Earth, the mass of such a dwarf can equal 1.4 times that of our sun. A spoonful of white dwarf matter would weigh several tons. ...
... Although some white dwarfs are no larger than the Earth, the mass of such a dwarf can equal 1.4 times that of our sun. A spoonful of white dwarf matter would weigh several tons. ...
a new isotopic abundance anomaly in chemically peculiar stars
... Cowley and Hubrig have been working on UVES spectra of a different variety of CP stars. Wavelengths of the infrared triplet were available for several of them. Interestingly, the Ca II lines in the most peculiar of their stars, the notorious Przybylski’s star, appeared to show the 48Ca shifts. When ...
... Cowley and Hubrig have been working on UVES spectra of a different variety of CP stars. Wavelengths of the infrared triplet were available for several of them. Interestingly, the Ca II lines in the most peculiar of their stars, the notorious Przybylski’s star, appeared to show the 48Ca shifts. When ...
Sirius Astronomer - Orange County Astronomers
... HST has also found evidence for a cluster of young blue stars encircling one of the 1 st intermediate-mass black holes ever discovered. Small black holes (formed from a star collapsing) and supermassive black holes (found at the centers of most large galaxies) are both common. But intermediate-mass ...
... HST has also found evidence for a cluster of young blue stars encircling one of the 1 st intermediate-mass black holes ever discovered. Small black holes (formed from a star collapsing) and supermassive black holes (found at the centers of most large galaxies) are both common. But intermediate-mass ...
Galileo Galilei (1564-1642) - Sunshine Coast Centre RASC
... telescopes were then focused on the discovery ...
... telescopes were then focused on the discovery ...
Astronomy.Practice.Quiz3
... 13. After the red giant phase, the next phase for a medium mass star is: a. nova b. planetary nebula c. white dwarf 14. This is how bright a star appears on Earth. a. apparent magnitude b. absolute magnitude ...
... 13. After the red giant phase, the next phase for a medium mass star is: a. nova b. planetary nebula c. white dwarf 14. This is how bright a star appears on Earth. a. apparent magnitude b. absolute magnitude ...
The star Epsilon UMa, or more commonly known as Alioth
... Alpha-CV type stars are divided into three main groups depending on which spectral lines are most dominant. These three types of spectral lines are silicon, manganese, or as in Alioth’s case, chromium-strontium lines.8 These stars usually lack the more common elements that are found in stars and hav ...
... Alpha-CV type stars are divided into three main groups depending on which spectral lines are most dominant. These three types of spectral lines are silicon, manganese, or as in Alioth’s case, chromium-strontium lines.8 These stars usually lack the more common elements that are found in stars and hav ...
Chapter 12
... 2. Apparent magnitude is a measure of the amount of light received from a celestial object. Hipparchus assigned an apparent magnitude of 1 for the brightest stars and 6 for the dimmest. 3. The modern magnitude scale is set up so that a 5-magnitude difference corresponds to a ratio of 100 in the amou ...
... 2. Apparent magnitude is a measure of the amount of light received from a celestial object. Hipparchus assigned an apparent magnitude of 1 for the brightest stars and 6 for the dimmest. 3. The modern magnitude scale is set up so that a 5-magnitude difference corresponds to a ratio of 100 in the amou ...
Evolved Stellar Populations
... To understand the history of formation and evolution of galaxies we need to understand the distribution of age, chemical abundance and kinematics of both the stars and gas. The best laboratories for these studies are galaxies of the Local Group and in particular the Magellanic Clouds (nearby, kn ...
... To understand the history of formation and evolution of galaxies we need to understand the distribution of age, chemical abundance and kinematics of both the stars and gas. The best laboratories for these studies are galaxies of the Local Group and in particular the Magellanic Clouds (nearby, kn ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.