Vireo Manual - Gettysburg College
... catalog from the US Naval Observatory on-line services, which includes positional and photometric data on 1.1 billion point sources, with photometric magnitudes in the B, V, R, J, H, and K passbands. Because it simulates a very large and diverse sample of the observable astronomical sky as seen with ...
... catalog from the US Naval Observatory on-line services, which includes positional and photometric data on 1.1 billion point sources, with photometric magnitudes in the B, V, R, J, H, and K passbands. Because it simulates a very large and diverse sample of the observable astronomical sky as seen with ...
Apollo 8 Technical Debriefing, Part 1
... There was a lot more light scatter in the scanning telescope than I had believed there would be prior to flight. At first this appeared to be the case at almost any attitude. In many occasions the light appears as a bar or a shaft across the scanning telescope -.a horizontal shaft. At other times it ...
... There was a lot more light scatter in the scanning telescope than I had believed there would be prior to flight. At first this appeared to be the case at almost any attitude. In many occasions the light appears as a bar or a shaft across the scanning telescope -.a horizontal shaft. At other times it ...
New Moons for Pluto!
... Many other telescopes had studied the region close to Pluto, but none had found anything interesting. To the surprise of astronomers, the Hubble snapshots revealed two objects close to Pluto that had never before been noticed. The newly discovered objects are much smaller than Charon. Charon is abou ...
... Many other telescopes had studied the region close to Pluto, but none had found anything interesting. To the surprise of astronomers, the Hubble snapshots revealed two objects close to Pluto that had never before been noticed. The newly discovered objects are much smaller than Charon. Charon is abou ...
Low-Res Version - Chandra X
... as radio, infra-red, ultra-violet and gamma, cannot be seen with the human eye, and thus do not have any "color". To see the invisible wavelengths, we need detectors that are especially designed to see those other wavelengths, such as the instruments on Chandra. Sometimes images taken by telescopes ...
... as radio, infra-red, ultra-violet and gamma, cannot be seen with the human eye, and thus do not have any "color". To see the invisible wavelengths, we need detectors that are especially designed to see those other wavelengths, such as the instruments on Chandra. Sometimes images taken by telescopes ...
Variable Star Spectroscopy 2008
... By far the simplest way to get started in spectroscopy though is just to use a filter cell mounted diffraction grating positioned a few cm in front of the camera sensor to produce a low resolution spectrum (R~ 100 or 50A), similar to those shown on the title slide. This particular grating is the St ...
... By far the simplest way to get started in spectroscopy though is just to use a filter cell mounted diffraction grating positioned a few cm in front of the camera sensor to produce a low resolution spectrum (R~ 100 or 50A), similar to those shown on the title slide. This particular grating is the St ...
X-Ray Astronomy Poster_Final
... The first technology useful for research above the atmosphere was that of the V2 rockets available after World War II. With these, scientist revealed that Sun is a powerful source of UV and Xradiation. This is only because Sun is extremely close to us. But this discovery caused many scientist to los ...
... The first technology useful for research above the atmosphere was that of the V2 rockets available after World War II. With these, scientist revealed that Sun is a powerful source of UV and Xradiation. This is only because Sun is extremely close to us. But this discovery caused many scientist to los ...
VERA Project : overview and current status
... VERA telescope : dual-beam antenna Dual-beam antenna : 2 receivers at focal plane Simultaneous observations of two adjacent sources can cancel out atmospheric fluctuation ...
... VERA telescope : dual-beam antenna Dual-beam antenna : 2 receivers at focal plane Simultaneous observations of two adjacent sources can cancel out atmospheric fluctuation ...
INTERSTELLAR MedLab
... Reflection – dust clouds that reflect (scatter) a star’s light to us Dark – high densities of dust and gas that redden or extinct the light from the stars located behind the cloud. These are also where molecules are likely to be found. During the course of this laboratory exercise, you will study th ...
... Reflection – dust clouds that reflect (scatter) a star’s light to us Dark – high densities of dust and gas that redden or extinct the light from the stars located behind the cloud. These are also where molecules are likely to be found. During the course of this laboratory exercise, you will study th ...
A6 - Vicphysics
... some IR for instance) we need to place telescopes in space to observe at those wavebands. This becomes VERY expensive, the size and lifespan of such instruments is limited and there is little or no chance of fixing faults or installing equipment upgrades (other than with the HST prior to the 2003 gr ...
... some IR for instance) we need to place telescopes in space to observe at those wavebands. This becomes VERY expensive, the size and lifespan of such instruments is limited and there is little or no chance of fixing faults or installing equipment upgrades (other than with the HST prior to the 2003 gr ...
The Search for Planet X Transcript
... month later observed it close to a star on two successive nights. He noted that their separation had changed and could easily have reached the conclusion that this was because one was not a star but a planet! It was later observed by John Herschel, William's son, who also believed it to be a star. T ...
... month later observed it close to a star on two successive nights. He noted that their separation had changed and could easily have reached the conclusion that this was because one was not a star but a planet! It was later observed by John Herschel, William's son, who also believed it to be a star. T ...
Think about the universe
... sun, the destruction begins when the outer layers are thrown off into space and the core flares brightly, forming a ring of expanding gas called a planetary nebula. The name planetary nebula is misleading because it is not related to planets. But it does have the cloud-like nature of other nebulae. ...
... sun, the destruction begins when the outer layers are thrown off into space and the core flares brightly, forming a ring of expanding gas called a planetary nebula. The name planetary nebula is misleading because it is not related to planets. But it does have the cloud-like nature of other nebulae. ...
– 1 – 1. Historical Notes for Ay 123 1.1.
... Best centroiding of image of a bright point source: aboue 1/100 of the image size. So from the Earth’s surface, we can measure a parallax of 0.01 arcsec or larger, corresponding to distances of 100 pc or smaller. At larger distances, we must rely on indirect estimates based on calibrated properties, ...
... Best centroiding of image of a bright point source: aboue 1/100 of the image size. So from the Earth’s surface, we can measure a parallax of 0.01 arcsec or larger, corresponding to distances of 100 pc or smaller. At larger distances, we must rely on indirect estimates based on calibrated properties, ...
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.