“The Southern Cross”
... well as calendars for use in religious as well as more general contexts. The ancient Indians used a sidereal system for their astronomical calculations. This uses the stars as a fixed background and times how long it takes an object to make a full orbit relative to them. A year consisted of 360 days ...
... well as calendars for use in religious as well as more general contexts. The ancient Indians used a sidereal system for their astronomical calculations. This uses the stars as a fixed background and times how long it takes an object to make a full orbit relative to them. A year consisted of 360 days ...
Prep/Review Questions - Faculty Web Sites at the University
... Suppose the Moon is in its "crescent" phase. If you were standing on the Moon’s surface and could see the Earth in the sky, what phase would the Earth show? Sagittarius is the most southerly of the constellations of the Zodiac. At about what time of night would you expect to see Sagittarius rise ove ...
... Suppose the Moon is in its "crescent" phase. If you were standing on the Moon’s surface and could see the Earth in the sky, what phase would the Earth show? Sagittarius is the most southerly of the constellations of the Zodiac. At about what time of night would you expect to see Sagittarius rise ove ...
1 - Alice Pevyhouse
... 9. The Sun’s apparent path around the celestial sphere is called? 10. In Ptolemy’s system the planets orbit the Earth and not the Sun. How did the system explain the retrograde motion of planets like Jupiter? 11. We now know that the orbit of a stable planet around a star like the Sun is always in t ...
... 9. The Sun’s apparent path around the celestial sphere is called? 10. In Ptolemy’s system the planets orbit the Earth and not the Sun. How did the system explain the retrograde motion of planets like Jupiter? 11. We now know that the orbit of a stable planet around a star like the Sun is always in t ...
Study Guide: Use your notes and handouts to
... Reading Notes – Galaxies; Graphic Organizer - Galaxies 10. What is a galaxy? 11. What are the three types of galaxies? 12. What is the name of our galaxy? What type of galaxy is it? ...
... Reading Notes – Galaxies; Graphic Organizer - Galaxies 10. What is a galaxy? 11. What are the three types of galaxies? 12. What is the name of our galaxy? What type of galaxy is it? ...
The Observer Newsletter - the TriState Astronomers
... galaxies and double stars. Most of the campers had never looked through a telescope before and many of them live in a big city where they are usually able to see only the moon and a few stars. We were also fortunate to have Jeff do a laser guided tour. It had a historical twist that took us from the ...
... galaxies and double stars. Most of the campers had never looked through a telescope before and many of them live in a big city where they are usually able to see only the moon and a few stars. We were also fortunate to have Jeff do a laser guided tour. It had a historical twist that took us from the ...
PowerPoint - Chandra X
... The young Sun-like stars in Orion produce violent X-ray outbursts, or flares, that are much more frequent and energetic than anything seen today from our Sun. The range of flare energies is large, with some of the stars producing flares that are a hundred times larger than others. The different flar ...
... The young Sun-like stars in Orion produce violent X-ray outbursts, or flares, that are much more frequent and energetic than anything seen today from our Sun. The range of flare energies is large, with some of the stars producing flares that are a hundred times larger than others. The different flar ...
The James Webb Space Telescope: A Vision for the Future
... light it can collect. Webb will be able to see back to a few hundred million years after the Big Bang, when the very first stars and galaxies began to form. Hubble, which sees mostly in visible light and has the largest mirror currently in space, can see back to roughly 600 million years after the B ...
... light it can collect. Webb will be able to see back to a few hundred million years after the Big Bang, when the very first stars and galaxies began to form. Hubble, which sees mostly in visible light and has the largest mirror currently in space, can see back to roughly 600 million years after the B ...
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.