Astronomical Ideas Fall 2012 Homework 3 Solutions 1. How bright
... Every element has its own unique spectrum - unique energies at which it can emit or absorb energy - just like fingerprints are unique. We can thus identify the presence of hydrogen in a gas by observing this pattern of energy lines emitted or absorbed by that gas. A gas produces spectral lines when ...
... Every element has its own unique spectrum - unique energies at which it can emit or absorb energy - just like fingerprints are unique. We can thus identify the presence of hydrogen in a gas by observing this pattern of energy lines emitted or absorbed by that gas. A gas produces spectral lines when ...
06-angles and resolution
... Wave nature of light, Heisenberg “uncertainty principle” Diffraction is the unavoidable propensity of light to change direction of propagation, i.e., to “bend” Cannot focus light from a point source to an arbitrarily small ...
... Wave nature of light, Heisenberg “uncertainty principle” Diffraction is the unavoidable propensity of light to change direction of propagation, i.e., to “bend” Cannot focus light from a point source to an arbitrarily small ...
Riaz - protostar sha.. - University of Hertfordshire
... molecular cloud, with the Cerro Tololo Inter-American Observatory (CTIO) 4-m telescope in Chile. They found an odd feature in their image – a shadowed dark lane just to the west of the protostar with a thickness of about 54 billion kilometres (360 times the distance from the Earth to the Sun). Silho ...
... molecular cloud, with the Cerro Tololo Inter-American Observatory (CTIO) 4-m telescope in Chile. They found an odd feature in their image – a shadowed dark lane just to the west of the protostar with a thickness of about 54 billion kilometres (360 times the distance from the Earth to the Sun). Silho ...
HW4 due - Yale Astronomy
... exciting (for me, at least!) because it means that we can measure the distances to very remote galaxies, using supernovae as standard candles. Type Ia supernovae have well-‐known luminosities, and at thei ...
... exciting (for me, at least!) because it means that we can measure the distances to very remote galaxies, using supernovae as standard candles. Type Ia supernovae have well-‐known luminosities, and at thei ...
Astronomers Demonstrate the Global Internet Telescope
... "monster in the middle" of a galaxy far away from our Milky Way. For this, they have used the world's research computer networks to create a giant virtual telescope. This allows imaging of the objects with unprecedented detail, and in real-time, which would have been impossible only a few years ago. ...
... "monster in the middle" of a galaxy far away from our Milky Way. For this, they have used the world's research computer networks to create a giant virtual telescope. This allows imaging of the objects with unprecedented detail, and in real-time, which would have been impossible only a few years ago. ...
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.