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... the poles, a patient observer at the North Pole will see the stars orbiting anti-clockwise around a point directly above his head, where the Pole Star appears immobile. The orbits of the stars increase with their distance from the Pole Star. This phenomenon can be observed at all latitudes, except t ...
... the poles, a patient observer at the North Pole will see the stars orbiting anti-clockwise around a point directly above his head, where the Pole Star appears immobile. The orbits of the stars increase with their distance from the Pole Star. This phenomenon can be observed at all latitudes, except t ...
Stars
... which gives them a very high temperature. These stars often run out of fuel in only 10,000 - 100,000 years. A blue giant is very bright. Like a light house, they shine across a great distance. Even though blue giant stars are rare, they make up many of the stars we see at night. Blue giant stars die ...
... which gives them a very high temperature. These stars often run out of fuel in only 10,000 - 100,000 years. A blue giant is very bright. Like a light house, they shine across a great distance. Even though blue giant stars are rare, they make up many of the stars we see at night. Blue giant stars die ...
December 15th 2016 - Newcastle Astronomical Society
... January 04-05, 2017, overnight • The Quadrantids is usually active between the end of December and the second week of January, and peaks around January 3rd to January 5th. Unlike other meteor showers that tend to stay at their peak for about two days, the peak period of the Quadrantids is only for a ...
... January 04-05, 2017, overnight • The Quadrantids is usually active between the end of December and the second week of January, and peaks around January 3rd to January 5th. Unlike other meteor showers that tend to stay at their peak for about two days, the peak period of the Quadrantids is only for a ...
M13 – The Great Hercules Cluster
... Surrounding the core of our galaxy are about 150 star clusters (called globular clusters), most of which lie close to the core but some lie beyond the spiral arms. One of the closer and brighter globulars is M13 (the thirteenth deep sky object in Charles Messier’s famous list), also called the Great ...
... Surrounding the core of our galaxy are about 150 star clusters (called globular clusters), most of which lie close to the core but some lie beyond the spiral arms. One of the closer and brighter globulars is M13 (the thirteenth deep sky object in Charles Messier’s famous list), also called the Great ...
What color are stars?
... can produce unusual double stars • Close binary systems are where only a few stellar diameters, or less, separate the stars • Mass can be dramatically transferred between the stars – detached binary (no mass transfer) – semidetached binary(material can flow across along a path called the Roche lobe) ...
... can produce unusual double stars • Close binary systems are where only a few stellar diameters, or less, separate the stars • Mass can be dramatically transferred between the stars – detached binary (no mass transfer) – semidetached binary(material can flow across along a path called the Roche lobe) ...
HR Diagram of a Star Cluster
... A true Hertzsprung-Russell diagram is an XY plot of absolute magnitude vs. temperature (or equivalently, color or spectral class). We will assume that every one of the stars on this photograph is a member of the cluster NGC 6819 and so we will assume that they all lie at about the same distance from ...
... A true Hertzsprung-Russell diagram is an XY plot of absolute magnitude vs. temperature (or equivalently, color or spectral class). We will assume that every one of the stars on this photograph is a member of the cluster NGC 6819 and so we will assume that they all lie at about the same distance from ...
Starry Night Lab
... 10. Set for 9 pm, 10 days in the future. Where is the constellation you found before (higher or lower)? Go to 9 pm, 20 days from now and see where the constellation is now. 11. Summarize what you've just found: (circle the right answer) A given star rises 4 minutes [earlier/later] each night. We cal ...
... 10. Set for 9 pm, 10 days in the future. Where is the constellation you found before (higher or lower)? Go to 9 pm, 20 days from now and see where the constellation is now. 11. Summarize what you've just found: (circle the right answer) A given star rises 4 minutes [earlier/later] each night. We cal ...
THE CELESTIAL SPHERE
... the earth, once in about 24 hours. There are two points on the sphere, which do not move – they are the celestial north and south poles. If we extend the axis of the earth to meet the celestial sphere, it would cut the latter at these two points. Very close to the celestial North Pole (for all pract ...
... the earth, once in about 24 hours. There are two points on the sphere, which do not move – they are the celestial north and south poles. If we extend the axis of the earth to meet the celestial sphere, it would cut the latter at these two points. Very close to the celestial North Pole (for all pract ...
The Mighty Hunter in the Winter Sky By Shannon Jackson
... Five constellations are always in our northern sky. Other groupings appear seasonally, and then disappear as they fall below the horizon. There are five constellations, however, which seem to circle Polaris (po LAR us), also known as the North Star. The North Star always stays put while the other st ...
... Five constellations are always in our northern sky. Other groupings appear seasonally, and then disappear as they fall below the horizon. There are five constellations, however, which seem to circle Polaris (po LAR us), also known as the North Star. The North Star always stays put while the other st ...
DSLR photometry - British Astronomical Association
... to measure multiple stars in the field of view By using a normal camera lens or small telephoto lenses (50mm-300mm), bright stars can be measured that are too bright for a CCD camera with a telescope. The scatter from visual observers is usually about 0.2-0.5 mag, but in DSLR measurements the scatte ...
... to measure multiple stars in the field of view By using a normal camera lens or small telephoto lenses (50mm-300mm), bright stars can be measured that are too bright for a CCD camera with a telescope. The scatter from visual observers is usually about 0.2-0.5 mag, but in DSLR measurements the scatte ...
MSci Astrophysics 210PHY412 - Queen's University Belfast
... star if it were placed at a distance of 10 pc m – M = 5 log(d/10) - 5 where d is in pc (note: log10 ) • Magnitudes are measured in some wavelength band e.g. UBV. To compare with theory it is more useful to determine bolometric magnitude – defined as absolute magnitude that would be measured by a bol ...
... star if it were placed at a distance of 10 pc m – M = 5 log(d/10) - 5 where d is in pc (note: log10 ) • Magnitudes are measured in some wavelength band e.g. UBV. To compare with theory it is more useful to determine bolometric magnitude – defined as absolute magnitude that would be measured by a bol ...
File
... how many times brighter or dimmer a star is compared with the sun. As seen from the diagram white dwarfs have the lowest luminosity and blue giants and red super-giants have the highest luminosity. Stars are not always one type. They move through a life cycle. ...
... how many times brighter or dimmer a star is compared with the sun. As seen from the diagram white dwarfs have the lowest luminosity and blue giants and red super-giants have the highest luminosity. Stars are not always one type. They move through a life cycle. ...
Star Basics
... Originally, Hipparchus defined the magnitude scale of stars by ranking stars on a scale of 1 through 6, with 1 being the brightest and six the dimmest. Using modern tools, it was determined that the range of brightness spanned a range of 100, that is, the magnitude 1 stars were 100 times brighter th ...
... Originally, Hipparchus defined the magnitude scale of stars by ranking stars on a scale of 1 through 6, with 1 being the brightest and six the dimmest. Using modern tools, it was determined that the range of brightness spanned a range of 100, that is, the magnitude 1 stars were 100 times brighter th ...
Module 6: “The Message of Starlight Assignment 9: Parallax, stellar
... of distance generally used in astronomy is called a parsec: one parsec is 3.26 light years. (A light year is how far light travels in a year.) Now, if we know the distance to the star, we can convert its brightness, measured in magnitudes (mag), to the magnitude a star would have at a fixed distance ...
... of distance generally used in astronomy is called a parsec: one parsec is 3.26 light years. (A light year is how far light travels in a year.) Now, if we know the distance to the star, we can convert its brightness, measured in magnitudes (mag), to the magnitude a star would have at a fixed distance ...
The Night Sky May 2016 - Bridgend Astronomical Society
... K0. The planet Pluto was discovered close to delta Geminorum by Clyde Tombaugh in 1930. The variable star shown to the lower right of delta Geminorum is a Cepheid variable, changing its brightness from 3.6 to 4.2 magnitudes with a period of 10.15 days ...
... K0. The planet Pluto was discovered close to delta Geminorum by Clyde Tombaugh in 1930. The variable star shown to the lower right of delta Geminorum is a Cepheid variable, changing its brightness from 3.6 to 4.2 magnitudes with a period of 10.15 days ...
November - LVAstronomy.com
... monthly summary. We also accept digital imaging. Visual astronomy depends on what’s seen through the eyepiece. Not only does it satisfy an innate curiosity, but it allows the visual observer to discover the beauty and the wonderment of the night sky. Before photography, all observations depended on ...
... monthly summary. We also accept digital imaging. Visual astronomy depends on what’s seen through the eyepiece. Not only does it satisfy an innate curiosity, but it allows the visual observer to discover the beauty and the wonderment of the night sky. Before photography, all observations depended on ...
33-3 - Fremont Peak Observatory
... Witch Head Nebula is a very faint reflection nebula, lit up by the super giant star Rigel to its east; however the object is technically within the boundaries of the constellation Eridanus, “The River”. It is thought that what we see is the remnant of an ancient super nova explosion some 900 light-y ...
... Witch Head Nebula is a very faint reflection nebula, lit up by the super giant star Rigel to its east; however the object is technically within the boundaries of the constellation Eridanus, “The River”. It is thought that what we see is the remnant of an ancient super nova explosion some 900 light-y ...
Double Stars in Scorpio`s Claws
... stars that are a rewarding challenge to any astronomer. Some of these are actual double stars (pairs of stars that orbit about each other), others are ‘apparent doubles’ – stars that simply lie along the same line of sight, but are very distant from each other in space. The map below indicates the l ...
... stars that are a rewarding challenge to any astronomer. Some of these are actual double stars (pairs of stars that orbit about each other), others are ‘apparent doubles’ – stars that simply lie along the same line of sight, but are very distant from each other in space. The map below indicates the l ...
File
... What are the basic Earth motions? What are the apparent celestial motions associated with Earth’s rotation? What are Star Trails? What is the apparent hourly rate of motion of the stars? How do star trails change with direction? How is Polaris different from other stars? What is specia ...
... What are the basic Earth motions? What are the apparent celestial motions associated with Earth’s rotation? What are Star Trails? What is the apparent hourly rate of motion of the stars? How do star trails change with direction? How is Polaris different from other stars? What is specia ...
Magnitudes lesson plan
... that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been credited to Ptolemy (100-150 A.D.) who was a Greek/Egyptian astronomer. He simply advanced the ...
... that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been credited to Ptolemy (100-150 A.D.) who was a Greek/Egyptian astronomer. He simply advanced the ...
PRE-LAB
... Imagine the sky to be a dome, and like in antiquity, imagine all stars, galaxies, planets, etc., to be painted on the inside of this dome. You see the EARTH only as far as the HORIZON and to you it looks like a circular flat disk. The point directly above you (the top of the dome) is called the ZENI ...
... Imagine the sky to be a dome, and like in antiquity, imagine all stars, galaxies, planets, etc., to be painted on the inside of this dome. You see the EARTH only as far as the HORIZON and to you it looks like a circular flat disk. The point directly above you (the top of the dome) is called the ZENI ...
The Southern Winter PDF
... sight passes through the dust that gravity constrains to the flat disk of the Milky Way, and, as is the way with silhouettes, it is difficult to determine the distance of the obscuration, although there are clues. To the right in the picture is the bright orange star Antares at a distance of about 6 ...
... sight passes through the dust that gravity constrains to the flat disk of the Milky Way, and, as is the way with silhouettes, it is difficult to determine the distance of the obscuration, although there are clues. To the right in the picture is the bright orange star Antares at a distance of about 6 ...
The Northern Winter Constellations - Science
... grouped. These are the Pleiades, or the Seven Sisters. ...
... grouped. These are the Pleiades, or the Seven Sisters. ...
Crux
Crux /ˈkrʌks/, located in the deep southern sky, is the smallest yet one of the most distinctive of the 88 modern constellations. Its name is Latin for cross, and it is dominated by a cross-shaped asterism that is commonly known as the Southern Cross. Although visible to the Ancient Greeks, it was seen as part of the constellation Centaurus, and not defined or accurately mapped till the 16th century.Known as Acrux, blue-white Alpha Crucis is the constellation's brightest star and the bottom star of the cross. Nearly as bright are Beta and Gamma, while Delta and Epsilon make up the asterism. Many of the constellation's brighter stars are members of the Scorpius–Centaurus Association, a loose group of hot blue-white stars that appear to share a common origin and motion across the Milky Way. Two star systems have been found to have planets. The constellation also contains four Cepheid variables visible to the naked eye under optimum conditions. Crux also contains the Jewel Box, a bright open cluster, and the Coalsack Nebula, the most prominent dark nebula in the sky.