SASS_Talk_4_16_08
... • Stars and other things outside our solar system have a particular Right Ascension and Declination or RA and DEC (almost constant) • Earth’s Equator, North Pole, and South Pole line up with the Equator and North Pole, and South Pole, of the Celestial Sphere ...
... • Stars and other things outside our solar system have a particular Right Ascension and Declination or RA and DEC (almost constant) • Earth’s Equator, North Pole, and South Pole line up with the Equator and North Pole, and South Pole, of the Celestial Sphere ...
Unit 4: Astronomy
... 3. Describe a couple of ways that our atmosphere interferes with the observation of objects in space and a couple of ways that astronomers can reduce or eliminate this interference. 4. What is a “non-optical telescope”? Describe a couple of advantages to using one of these in addition to an optical ...
... 3. Describe a couple of ways that our atmosphere interferes with the observation of objects in space and a couple of ways that astronomers can reduce or eliminate this interference. 4. What is a “non-optical telescope”? Describe a couple of advantages to using one of these in addition to an optical ...
practice exam - UW-Madison Astronomy
... c) Newton’s laws were at the level of the Ancient Greeks whereas Kepler was breaking new ground d) Kepler’s laws were mathematical whereas Newton had a deeper, more general physical theory (i.e. gravity) e) Newton’s laws could not be used to explain orbital motion 21. If a telescope’s spatial resolu ...
... c) Newton’s laws were at the level of the Ancient Greeks whereas Kepler was breaking new ground d) Kepler’s laws were mathematical whereas Newton had a deeper, more general physical theory (i.e. gravity) e) Newton’s laws could not be used to explain orbital motion 21. If a telescope’s spatial resolu ...
The Sky This Month
... • On the Equinox the Sun shines down directly on the equator – your shadow is just beneath your feet. • Winter Solstice : Sun directly overhead at the (northern) tropic of Cancer. • Summer Solstice : Sun directly overhead at the (Southern) tropic of ...
... • On the Equinox the Sun shines down directly on the equator – your shadow is just beneath your feet. • Winter Solstice : Sun directly overhead at the (northern) tropic of Cancer. • Summer Solstice : Sun directly overhead at the (Southern) tropic of ...
Welcome to Astro 10! - UC Berkeley Astronomy w
... • Average distance between the Earth and Sun is 150,000,000 km = 1.5 x 108 km = 1.5 x 1011 m. This is known as an “Astronomical Unit.” Stars and galaxies are much, much further away. • Convenient way to give distance: use the light travel time • The speed of light in a vacuum is constant and the lar ...
... • Average distance between the Earth and Sun is 150,000,000 km = 1.5 x 108 km = 1.5 x 1011 m. This is known as an “Astronomical Unit.” Stars and galaxies are much, much further away. • Convenient way to give distance: use the light travel time • The speed of light in a vacuum is constant and the lar ...
Coordinate Systems for Astronomy or: How to get
... as Greenwich Mean Time (GMT). It is the time measured by a evenly running clock positioned on the Greenwich Meridian. The world is divided into Time Zones; 15 degrees change in longitude is equivalent to an hour's change in time. South Africa is roughly 30 degrees east of Greenwich, and so South Afr ...
... as Greenwich Mean Time (GMT). It is the time measured by a evenly running clock positioned on the Greenwich Meridian. The world is divided into Time Zones; 15 degrees change in longitude is equivalent to an hour's change in time. South Africa is roughly 30 degrees east of Greenwich, and so South Afr ...
A Short History of Astronomy
... The Transit of Venus • Kepler calculated a transit of Venus would occur in 1631, which was not observed. • An exceptional mathematician, Jerimiah Horrocks calculated that a second transit of Venus would occur in 1639. • Horrock’s was the first person (one of only two) to accurately observe and reco ...
... The Transit of Venus • Kepler calculated a transit of Venus would occur in 1631, which was not observed. • An exceptional mathematician, Jerimiah Horrocks calculated that a second transit of Venus would occur in 1639. • Horrock’s was the first person (one of only two) to accurately observe and reco ...
Astrophotography
Astrophotography is a specialized type of photography for recording images of astronomical objects and large areas of the night sky. The first photograph of an astronomical object (the Moon) was taken in 1840, but it was not until the late 19th century that advances in technology allowed for detailed stellar photography. Besides being able to record the details of extended objects such as the Moon, Sun, and planets, astrophotography has the ability to image objects invisible to the human eye such as dim stars, nebulae, and galaxies. This is done by long time exposure since both film and digital cameras can accumulate and sum light photons over these long periods of time. Photography revolutionized the field of professional astronomical research, with long time exposures recording hundreds of thousands of new stars and nebulae that were invisible to the human eye, leading to specialized and ever larger optical telescopes that were essentially big cameras designed to collect light to be recorded on film. Direct astrophotography had an early role in sky surveys and star classification but over time it has given way to more sophisticated equipment and techniques designed for specific fields of scientific research, with film (and later astronomical CCD cameras) becoming just one of many forms of sensor.Astrophotography is a large sub-discipline in amateur astronomy where it is usually used to record aesthetically pleasing images, rather than for scientific research, with a whole range of equipment and techniques dedicated to the activity.