1985e - Astrophotography with small telescopes
... faint and fuzzy gliding through the field of view. Such an object could be a new comet; more often these would be clusters, nebulae, galaxies or small groups of faint stars. Nearly eight years before, on the morning of September 12, 1978, I uncovered an object which turned out to be a comet. Being n ...
... faint and fuzzy gliding through the field of view. Such an object could be a new comet; more often these would be clusters, nebulae, galaxies or small groups of faint stars. Nearly eight years before, on the morning of September 12, 1978, I uncovered an object which turned out to be a comet. Being n ...
OUR SOLAR SYSTEM
... potentially could exist — as a way to identify exoplanets that may be capable of supporting life as we understand it. While we can quibble with the definition — perhaps there’s a biology that uses solvents other than water or maybe life can develop entirely beneath the surface — it’s a place to star ...
... potentially could exist — as a way to identify exoplanets that may be capable of supporting life as we understand it. While we can quibble with the definition — perhaps there’s a biology that uses solvents other than water or maybe life can develop entirely beneath the surface — it’s a place to star ...
GBT Control System
... • The GBT has had over 10 receivers and over 10 backends available for use during the 10 years since its commissioning. • Each receiver to backend must be routed through a complicated IF chain. • If any part of the configuration is incorrectly setup, the observation will fail and telescope time will ...
... • The GBT has had over 10 receivers and over 10 backends available for use during the 10 years since its commissioning. • Each receiver to backend must be routed through a complicated IF chain. • If any part of the configuration is incorrectly setup, the observation will fail and telescope time will ...
The Classification of Stellar Spectra
... If the convective cells created during this helium fusion runaways reach all the way to the hydrogen fusion layer, this would potentially provide a mechanism for material deep within the star to be dredged up to its surface. This may nicely explain several stellar types which seem analogous with K a ...
... If the convective cells created during this helium fusion runaways reach all the way to the hydrogen fusion layer, this would potentially provide a mechanism for material deep within the star to be dredged up to its surface. This may nicely explain several stellar types which seem analogous with K a ...
Lecture 8 - Kepler and Brahe
... that this is a voluntary choice based on his attitude. He refused to add epicycles. But now, of course, he had no model of the motions of the planets. Kepler realized that to get the most out of Tycho’s data, he first needed to determine the Earth’s orbit, since all planetary observations are made f ...
... that this is a voluntary choice based on his attitude. He refused to add epicycles. But now, of course, he had no model of the motions of the planets. Kepler realized that to get the most out of Tycho’s data, he first needed to determine the Earth’s orbit, since all planetary observations are made f ...
Initial performance of the aspect system on the Chandra
... Two Inertial Reference Units are located in the front of the spacecraft, on the side of the HRMA. Each IRU contains two gyros, each of which measures an angular rate about 2 gyro axes (X and Y). This gives a total of eight gyro channels. Data from four of the eight channels can be read out at one ti ...
... Two Inertial Reference Units are located in the front of the spacecraft, on the side of the HRMA. Each IRU contains two gyros, each of which measures an angular rate about 2 gyro axes (X and Y). This gives a total of eight gyro channels. Data from four of the eight channels can be read out at one ti ...
Experimental single photon exchange along a space link of 7000 km
... One of the main challenges of QC consists in extending the length of the communication channel, which on ground is nowadays limited to few hundreds of kilometers, both for free space [7] and optical fibers [13]. To overcome these limitations, in the last decade the feasibility of a quantum channel f ...
... One of the main challenges of QC consists in extending the length of the communication channel, which on ground is nowadays limited to few hundreds of kilometers, both for free space [7] and optical fibers [13]. To overcome these limitations, in the last decade the feasibility of a quantum channel f ...
Chapter 15: The Milky Way Galaxy
... How many stars does the Milky Way Galaxy contain? The Milky Way has about 200 billion stars. Where is our solar system located in the Milky Way Galaxy? The solar system is between the Sagittarius and Perseus spiral arms about 26,000 ly from the center of the Galaxy. Is the Sun moving through the Mil ...
... How many stars does the Milky Way Galaxy contain? The Milky Way has about 200 billion stars. Where is our solar system located in the Milky Way Galaxy? The solar system is between the Sagittarius and Perseus spiral arms about 26,000 ly from the center of the Galaxy. Is the Sun moving through the Mil ...
The HIRES science case
... In general planets were thought to be mostly on orbits coplanar with their star's equator, something in line with predictions of disc migration. Recent results have shown that hot Jupiter planets on non-coplanar orbits are common, including some planets on retrograde orbits (Triaud et al. 2010). Tho ...
... In general planets were thought to be mostly on orbits coplanar with their star's equator, something in line with predictions of disc migration. Recent results have shown that hot Jupiter planets on non-coplanar orbits are common, including some planets on retrograde orbits (Triaud et al. 2010). Tho ...
ISS RAM Direction
... • Bright Object Protection – Anecdotal evidence from other JEM-EF payload shows there is a need for Bright Object Protection • Sun glint from the robotic arm while operating or parked near the JEM-EF may be of concern – The IDL Concept includes a Bright Object Safety Shutter (BOSS) located after the ...
... • Bright Object Protection – Anecdotal evidence from other JEM-EF payload shows there is a need for Bright Object Protection • Sun glint from the robotic arm while operating or parked near the JEM-EF may be of concern – The IDL Concept includes a Bright Object Safety Shutter (BOSS) located after the ...
Annual report 2004 - Département d`Astrophysique, Géophysique et
... - research on quasars and active galaxies has been extended to the high energy domain (XMMNewton satellite; see details in chapter IV of the report) - thanks to a substantial investement in hardware and software development, Belgium is represented at the co-PI level in the consortium for the PACS in ...
... - research on quasars and active galaxies has been extended to the high energy domain (XMMNewton satellite; see details in chapter IV of the report) - thanks to a substantial investement in hardware and software development, Belgium is represented at the co-PI level in the consortium for the PACS in ...
gunclubscope
... "Do you intend, then, to increase the luminous power of the moon?" "Exactly so. If I can succeed in diminishing the density of the atmosphere through which the moon's light has to travel I shall have rendered her light more intense. To effect that object it will be enough to establish a telescope on ...
... "Do you intend, then, to increase the luminous power of the moon?" "Exactly so. If I can succeed in diminishing the density of the atmosphere through which the moon's light has to travel I shall have rendered her light more intense. To effect that object it will be enough to establish a telescope on ...
Life in the galactic danger zone
... in the journal Science. “The massive planets could not have formed so close to their host stars so they must have migrated [or been scattered] into smaller orbits. When this happens, it is likely that they would destroy any terrestrial planets in the circumstellar habitable zone.” Consequently, Line ...
... in the journal Science. “The massive planets could not have formed so close to their host stars so they must have migrated [or been scattered] into smaller orbits. When this happens, it is likely that they would destroy any terrestrial planets in the circumstellar habitable zone.” Consequently, Line ...
Desert Skies - Tucson Amateur Astronomy Association
... (between 1st quarter and full), so that’s probably the best object to set up on. You might want to try using a neutral density filter to cut down on the intensity, or use higher power and zoom in on an interesting part of the terminator. The impact crater Copernicus will be well placed for observing ...
... (between 1st quarter and full), so that’s probably the best object to set up on. You might want to try using a neutral density filter to cut down on the intensity, or use higher power and zoom in on an interesting part of the terminator. The impact crater Copernicus will be well placed for observing ...
Project 3. Colour in Astronomy
... M50, but most of the dimmer, red stars do not. M50 lies about 3000 light-years from Earth and is about 20 light years across. Magnitude is a number that measures the brightness of a star or galaxy. In magnitude, higher numbers correspond to fainter objects, lower numbers to brighter objects; the ver ...
... M50, but most of the dimmer, red stars do not. M50 lies about 3000 light-years from Earth and is about 20 light years across. Magnitude is a number that measures the brightness of a star or galaxy. In magnitude, higher numbers correspond to fainter objects, lower numbers to brighter objects; the ver ...
Extragalactic Astrophysics 1 AA 2011-2012 Prof. LA Antonelli
... for open and globular clusters more precise distance determinations are possible, because all the stars of the same cluster have about the same age, chemical composition, and distance. optimal agreement of isochrones with HR diagram can be found ...
... for open and globular clusters more precise distance determinations are possible, because all the stars of the same cluster have about the same age, chemical composition, and distance. optimal agreement of isochrones with HR diagram can be found ...
Network Telescopes: Technical Report
... host as the product of the rate at which packets are sent, r, times the elapsed time, T . The probability of seeing at least one packet in T seconds is given by P (t ≤ T ) = 1 − (1 − p) rT . Figure 1 shows this cumulative probability of observing at least one packet from a host with a targeting rate ...
... host as the product of the rate at which packets are sent, r, times the elapsed time, T . The probability of seeing at least one packet in T seconds is given by P (t ≤ T ) = 1 − (1 − p) rT . Figure 1 shows this cumulative probability of observing at least one packet from a host with a targeting rate ...
Milky Way Galaxy
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
ASTR 1010 Homework Solutions
... 29. Andromeda arrives at a position in the sky 4 hours later than Cygnus. Therefore on July 21, Andromeda will be highest in the sky at 4 A.M. 34. (a) For an observer at the north pole, Figure 2-10 would have the Earth’s north pole and the north celestial pole at the top of the diagram. (b) For an o ...
... 29. Andromeda arrives at a position in the sky 4 hours later than Cygnus. Therefore on July 21, Andromeda will be highest in the sky at 4 A.M. 34. (a) For an observer at the north pole, Figure 2-10 would have the Earth’s north pole and the north celestial pole at the top of the diagram. (b) For an o ...
Brown et al. 2008 Studying Resolved Stellar
... One of the core goals of the James Webb Space Telescope (JWST) is to determine the history of star formation and metal enrichment in the Universe. JWST will pursue this goal primarily by searching for luminous objects at very high redshift. An important complement to the high-redshift observations w ...
... One of the core goals of the James Webb Space Telescope (JWST) is to determine the history of star formation and metal enrichment in the Universe. JWST will pursue this goal primarily by searching for luminous objects at very high redshift. An important complement to the high-redshift observations w ...
Space and Technology
... deep blue gas planet gives off more energy than it receives from the sun. ...
... deep blue gas planet gives off more energy than it receives from the sun. ...
Chapter 14. Stellar Structure and Evolution
... Inevitably a star will exhaust the H in its core, having converted it to He. The Sun is about half way through that process. In the core of the Sun, we believe the present composition is about 50% He. As the He is created, the core of the star must move to slightly higher temperatures and pressures ...
... Inevitably a star will exhaust the H in its core, having converted it to He. The Sun is about half way through that process. In the core of the Sun, we believe the present composition is about 50% He. As the He is created, the core of the star must move to slightly higher temperatures and pressures ...
Here - Amateur Observers` Society of New York
... introduction to the night sky visible from North America. Using this observing program is an excellent way to gain knowledge and experience in astronomy. Experienced observers find that a planned observing session results in a more satisfying and interesting experience. This program will help introd ...
... introduction to the night sky visible from North America. Using this observing program is an excellent way to gain knowledge and experience in astronomy. Experienced observers find that a planned observing session results in a more satisfying and interesting experience. This program will help introd ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.