Night Sky Observations
... Alt-Azimuth: An easy coordinate system. Altitude is measured from the horizon to the zenith (the point directly above you). The horizon is equal to 0 degrees and the zenith is 90 degrees. Azimuth is the 360 degree circle around you, 0 degrees being due north, 90 degrees east, 180 degrees south and 2 ...
... Alt-Azimuth: An easy coordinate system. Altitude is measured from the horizon to the zenith (the point directly above you). The horizon is equal to 0 degrees and the zenith is 90 degrees. Azimuth is the 360 degree circle around you, 0 degrees being due north, 90 degrees east, 180 degrees south and 2 ...
Virgo constellation
... Messier objects found in the Virgo constellation. They are as follows. The M49 an elliptical galaxy, type E2 this galaxy has a large collection of globular clusters estimated about 5,900.There is strong evidence for a stellar mass black hole through observations made over a span of a few years. M49 ...
... Messier objects found in the Virgo constellation. They are as follows. The M49 an elliptical galaxy, type E2 this galaxy has a large collection of globular clusters estimated about 5,900.There is strong evidence for a stellar mass black hole through observations made over a span of a few years. M49 ...
A Bluetooth Telescope Controller - ATM
... Introduction.................................................................................................... 3 ...
... Introduction.................................................................................................... 3 ...
Icy Visitor Makes First Appearance to Inner Solar System
... of its discoverers. ISON stands for the International Scientific Optical Network, a group of observatories in ten countries who have organized to detect, monitor, and track objects in space. Astronomers have been tracking the comet with many telescopes, including the Earth-orbiting Hubble Space Tele ...
... of its discoverers. ISON stands for the International Scientific Optical Network, a group of observatories in ten countries who have organized to detect, monitor, and track objects in space. Astronomers have been tracking the comet with many telescopes, including the Earth-orbiting Hubble Space Tele ...
Powerpoint slides
... stars within the galaxy, many audience members will try to send your second volunteer to another city! Surprisingly enough, the answer is eight feet, or approximately 20 CD diameters away. Galaxies are much closer together than stars, relative to their size. Do not be fooled, however; it is still ve ...
... stars within the galaxy, many audience members will try to send your second volunteer to another city! Surprisingly enough, the answer is eight feet, or approximately 20 CD diameters away. Galaxies are much closer together than stars, relative to their size. Do not be fooled, however; it is still ve ...
Propagation of Light Through Atmospheric Turbulence Lecture 5
... horizon (larger zenith angles ζ ) Page 29 ...
... horizon (larger zenith angles ζ ) Page 29 ...
Properties of Ellipticals and Spirals
... the arms are star forming regions. The massive, hot, young and luminous stars dominate the overall light, thus giving it a bluish hue. The bright yellowish looking regions, mostly the bulge, also have some young stars, however, since there is relatively more dust in the bulge, we see only the longer ...
... the arms are star forming regions. The massive, hot, young and luminous stars dominate the overall light, thus giving it a bluish hue. The bright yellowish looking regions, mostly the bulge, also have some young stars, however, since there is relatively more dust in the bulge, we see only the longer ...
Experience with the Hubble Space Telescope: Twenty Years
... 565 km [13]. During a typical ~96 minute orbit, it will spend most of its time in pointed astronomical observations. This efficiency of ~50% or better was reached during the first 6 years of science operations as improvements were made in how HST was utilized and operated. ...
... 565 km [13]. During a typical ~96 minute orbit, it will spend most of its time in pointed astronomical observations. This efficiency of ~50% or better was reached during the first 6 years of science operations as improvements were made in how HST was utilized and operated. ...
The Ages of Astrophotography - Powered by Catchers of the Light
... features 100 of the most important, iconic and famous of astronomical objects, instruments, surveys, telescopes and cameras. For each ‘object’ two images are depicted side by side, one taken by an early Pioneer of Astrophotography and a second imaged by one of today’s finest Astronomical Photographe ...
... features 100 of the most important, iconic and famous of astronomical objects, instruments, surveys, telescopes and cameras. For each ‘object’ two images are depicted side by side, one taken by an early Pioneer of Astrophotography and a second imaged by one of today’s finest Astronomical Photographe ...
H2CO and CO in S140
... peak (Fig 1). Thus, we confirm that the strongest H2CO absorption does not occur near the Hα arc where the CO emission is brightest. How can we explain these differences? ...
... peak (Fig 1). Thus, we confirm that the strongest H2CO absorption does not occur near the Hα arc where the CO emission is brightest. How can we explain these differences? ...
W The X-Ray Universe X-ray images of the Universe are
... nuclei of galaxies, and hot gas in intergalactic space. The X rays detected by X-ray astronomers, like those put to use in industry, medicine, and laboratory research, must be produced by high-energy particles. It is not surprising, then, that an X-ray image of the sky can look markedly different fr ...
... nuclei of galaxies, and hot gas in intergalactic space. The X rays detected by X-ray astronomers, like those put to use in industry, medicine, and laboratory research, must be produced by high-energy particles. It is not surprising, then, that an X-ray image of the sky can look markedly different fr ...
observing manual - Texas Tech University
... need to take images of a region with no bright stars or non-stellar objects, moving the telescope a little between exposures. Under those circumstances you would use “The Sky”, move the telescope to a region of the sky containing no bright stars (nothing brighter than magnitude 8) and no non-stel ...
... need to take images of a region with no bright stars or non-stellar objects, moving the telescope a little between exposures. Under those circumstances you would use “The Sky”, move the telescope to a region of the sky containing no bright stars (nothing brighter than magnitude 8) and no non-stel ...
Here - Astrophysics Research Institute
... Earth's rotation axis precesses slowly, with a period of 25,600 years. This happens because the Earth is not quite spherical, but is oblate and tilted. Therefore, the direction of the Sun's gravity does not pass directly through the Earth's centre of rotation. The overall effect is that the position ...
... Earth's rotation axis precesses slowly, with a period of 25,600 years. This happens because the Earth is not quite spherical, but is oblate and tilted. Therefore, the direction of the Sun's gravity does not pass directly through the Earth's centre of rotation. The overall effect is that the position ...
orion® skyView Pro™ EQ Mount
... was developed to work with many different telescope optical tubes. Designed for astronomical use, this precision mount allows convenient “tracking” of celestial objects as they move slowly across the sky, so they remain within your eyepiece’s field of view. The setting circles built into the mount w ...
... was developed to work with many different telescope optical tubes. Designed for astronomical use, this precision mount allows convenient “tracking” of celestial objects as they move slowly across the sky, so they remain within your eyepiece’s field of view. The setting circles built into the mount w ...
New Worlds on the Horizon: Earth-Sized Planets Close to Other Stars.
... But the discovery of planets not too unlike the Earth may not be far off: Doppler velocimetry with more stable instruments has recently discovered several objects much less massive than Saturn and as small as five times larger than Earth (2–4); one of these has now been observed to transit its star ...
... But the discovery of planets not too unlike the Earth may not be far off: Doppler velocimetry with more stable instruments has recently discovered several objects much less massive than Saturn and as small as five times larger than Earth (2–4); one of these has now been observed to transit its star ...
Galaxies - SD43 Teacher Sites
... Despite the immense number of galaxies, most can be classified according to one of three basic shapes: spiral, elliptical, and irregular. • A spiral galaxy, when viewed from above, looks like a pinwheel, with many long “arms” spiralling out from a centre core (Figure 10.11). Viewed from along its ed ...
... Despite the immense number of galaxies, most can be classified according to one of three basic shapes: spiral, elliptical, and irregular. • A spiral galaxy, when viewed from above, looks like a pinwheel, with many long “arms” spiralling out from a centre core (Figure 10.11). Viewed from along its ed ...
15.6 Planets Beyond the Solar System
... Jupiter and an orbital period of 6 years. You can see why it has taken so long to discover planets in Jupiter-like orbits: You have to observe for at least one orbital period. It takes six years for this planet to orbit just once, and observers usually demand more than one orbit for confirmation. Th ...
... Jupiter and an orbital period of 6 years. You can see why it has taken so long to discover planets in Jupiter-like orbits: You have to observe for at least one orbital period. It takes six years for this planet to orbit just once, and observers usually demand more than one orbit for confirmation. Th ...
An Unbiased Near-infrared Interferometric Survey for Hot
... evolution of extrasolar planetary systems. However, debris discs that are relatively easy to detect are located several astronomical units (au) to a few hundreds of au from their host stars, and thus only trace the outer regions of planetary systems. In order to study the inner regions close to the ...
... evolution of extrasolar planetary systems. However, debris discs that are relatively easy to detect are located several astronomical units (au) to a few hundreds of au from their host stars, and thus only trace the outer regions of planetary systems. In order to study the inner regions close to the ...
History of Astronomy
... still less a book on "speculative astronomy." Something of each of these is essential, however, for tracing the progress of thought and knowledge which it is the object of this History to describe. The progress of human knowledge is measured by the increased habit of looking at facts from new points ...
... still less a book on "speculative astronomy." Something of each of these is essential, however, for tracing the progress of thought and knowledge which it is the object of this History to describe. The progress of human knowledge is measured by the increased habit of looking at facts from new points ...
I. The Spectrometer and the Balmer Series
... Qualitatively observe the sodium spectrum in first order for m=+1, identifying as many lines as possible. To observe fainter lines, it may be necessary to open the slit a little more, but not so much that the scattered light causes the background to become too light. You will also want to use the bl ...
... Qualitatively observe the sodium spectrum in first order for m=+1, identifying as many lines as possible. To observe fainter lines, it may be necessary to open the slit a little more, but not so much that the scattered light causes the background to become too light. You will also want to use the bl ...
Open access - ORBi
... etc.) in the dusty disks to due gravitational interactions. There is therefore a major scientific interest in studying exozodiacal disks. The detection and characterization of exozodiacal disks by classical spectro-photometry is a very difficult task, because the spectral energy distribution of warm du ...
... etc.) in the dusty disks to due gravitational interactions. There is therefore a major scientific interest in studying exozodiacal disks. The detection and characterization of exozodiacal disks by classical spectro-photometry is a very difficult task, because the spectral energy distribution of warm du ...
Hubble Space Telescope Observations of the Light Echo around
... – Therefore it does not seem to be related to an accretion event involving a companion star, debris disk, infalling planets, or other exotic external cause ...
... – Therefore it does not seem to be related to an accretion event involving a companion star, debris disk, infalling planets, or other exotic external cause ...
Lyman-α: The Many Applications and Challenges of This Powerful
... studying stellar mass loss, fluorescent excitation of molecular hydrogen in the environments of very young stars, the deuterium/hydrogen ratio in the Galaxy, and mass loss and photochemical processes in exoplanet atmospheres. These powerful applications result from Lyman-α being the strongest emissi ...
... studying stellar mass loss, fluorescent excitation of molecular hydrogen in the environments of very young stars, the deuterium/hydrogen ratio in the Galaxy, and mass loss and photochemical processes in exoplanet atmospheres. These powerful applications result from Lyman-α being the strongest emissi ...
Quasars
... measured by C. Hazard and co-workers, using lunar occultations. • In 1962, M. Schmidt obtained a spectrum of this “object", which showed a large redshift of 0.158, indicative of being very far away according to Hubble‟s Law. ...
... measured by C. Hazard and co-workers, using lunar occultations. • In 1962, M. Schmidt obtained a spectrum of this “object", which showed a large redshift of 0.158, indicative of being very far away according to Hubble‟s Law. ...
Spitzer Space Telescope
The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space observatory launched in 2003. It is the fourth and final of the NASA Great Observatories program.The planned mission period was to be 2.5 years with a pre-launch expectation that the mission could extend to five or slightly more years until the onboard liquid helium supply was exhausted. This occurred on 15 May 2009. Without liquid helium to cool the telescope to the very low temperatures needed to operate, most of the instruments are no longer usable. However, the two shortest-wavelength modules of the IRAC camera are still operable with the same sensitivity as before the cryogen was exhausted, and will continue to be used in the Spitzer Warm Mission. All Spitzer data, from both the primary and warm phases, are archived at the Infrared Science Archive (IRSA).In keeping with NASA tradition, the telescope was renamed after its successful demonstration of operation, on 18 December 2003. Unlike most telescopes that are named after famous deceased astronomers by a board of scientists, the new name for SIRTF was obtained from a contest open to the general public.The contest led to the telescope being named in honor of astronomer Lyman Spitzer, who had promoted the concept of space telescopes in the 1940s. Spitzer wrote a 1946 report for RAND Corporation describing the advantages of an extraterrestrial observatory and how it could be realized with available or upcoming technology. He has been cited for his pioneering contributions to rocketry and astronomy, as well as ""his vision and leadership in articulating the advantages and benefits to be realized from the Space Telescope Program.""The US$800 million Spitzer was launched from Cape Canaveral Air Force Station, on a Delta II 7920H ELV rocket, Monday, 25 August 2003 at 13:35:39 UTC-5 (EDT).It follows a heliocentric instead of geocentric orbit, trailing and drifting away from Earth's orbit at approximately 0.1 astronomical unit per year (a so-called ""earth-trailing"" orbit). The primary mirror is 85 centimeters (33 in) in diameter, f/12, made of beryllium and is cooled to 5.5 K (−449.77 °F). The satellite contains three instruments that allow it to perform astronomical imaging and photometry from 3 to 180 micrometers, spectroscopy from 5 to 40 micrometers, and spectrophotometry from 5 to 100 micrometers.