Chandra
... however, concluded that their observations required too Iowa wind column density for a coronal model and too high a source temperature for a wind interaction model. Lucy & White (1980) were the first to suggest that shocks could be produced within the wind itself by instabilities in the line-driving ...
... however, concluded that their observations required too Iowa wind column density for a coronal model and too high a source temperature for a wind interaction model. Lucy & White (1980) were the first to suggest that shocks could be produced within the wind itself by instabilities in the line-driving ...
X-Ray Spectroscopy of Stars
... as X-ray sources, with only a few exceptions, most notably A-type stars and the coolest giants of spectral type M. But even for those two classes, important exceptions exist. X-rays have been identified from the most massive and hottest stars, i.e., O-type and Wolf-Rayet stars, for which shocks form ...
... as X-ray sources, with only a few exceptions, most notably A-type stars and the coolest giants of spectral type M. But even for those two classes, important exceptions exist. X-rays have been identified from the most massive and hottest stars, i.e., O-type and Wolf-Rayet stars, for which shocks form ...
siamois
... • Mode excitation mechanisms (convection) • Rotation and internal structure Specification: ...
... • Mode excitation mechanisms (convection) • Rotation and internal structure Specification: ...
alignment of the fold mirror
... Align the spaceframe to the weldment assembly to within 1/32 to 1/64 of an inch. Place a laser at the dewar end of the spaceframe, but independent of the spaceframe/weldment assembly. Align the laser so that it crosses the cross hairs of the spaceframe assembly. A best average positioning will have ...
... Align the spaceframe to the weldment assembly to within 1/32 to 1/64 of an inch. Place a laser at the dewar end of the spaceframe, but independent of the spaceframe/weldment assembly. Align the laser so that it crosses the cross hairs of the spaceframe assembly. A best average positioning will have ...
PowerPoint
... Electrons orbit the nucleus of each atom (a little like planets around the Sun) The nucleus consists of protons and neutrons Number of protons = number of electrons (so total charge is ...
... Electrons orbit the nucleus of each atom (a little like planets around the Sun) The nucleus consists of protons and neutrons Number of protons = number of electrons (so total charge is ...
25 Years of the Hubble Space Telescope - Speaker
... field into the upper atmosphere. The electrons excite atmospheric gases, causing them to glow. The electric-blue image of Jupiter’s northern aurora shows the main oval of the aurora, which is centered on the magnetic north pole, plus more diffuse emissions inside the polar cap. Though the aurora res ...
... field into the upper atmosphere. The electrons excite atmospheric gases, causing them to glow. The electric-blue image of Jupiter’s northern aurora shows the main oval of the aurora, which is centered on the magnetic north pole, plus more diffuse emissions inside the polar cap. Though the aurora res ...
RPT-O-G0047 Gemini Telescopes f/16 Optical
... light. The configuration section includes information on the optical properties of the telescopes as well as a detailed description of their optical components. The image quality section contains information on the imaging properties of the telescopes under various conditions. The last section descr ...
... light. The configuration section includes information on the optical properties of the telescopes as well as a detailed description of their optical components. The image quality section contains information on the imaging properties of the telescopes under various conditions. The last section descr ...
Christiaan Huygens and his telescopes
... didn’t owe this discovery to his visual observations only: it was also the result of his deductive reasoning. Christiaan came to the right solution of the puzzle by examining old telescopic observations made by other astronomers during the first half of the 17th century. These astronomers didn’t yet ...
... didn’t owe this discovery to his visual observations only: it was also the result of his deductive reasoning. Christiaan came to the right solution of the puzzle by examining old telescopic observations made by other astronomers during the first half of the 17th century. These astronomers didn’t yet ...
APS Apr 2008 - User Web Pages
... • Bursts tend to decrease in frequency at higher accretion rates, rather than increasing, as expected theoretically • Such bursts are often much fainter than might be expected (given the wait time and inferred accretion rate), suggesting an “energy leak” • A (possibly) related issue is that “normal” ...
... • Bursts tend to decrease in frequency at higher accretion rates, rather than increasing, as expected theoretically • Such bursts are often much fainter than might be expected (given the wait time and inferred accretion rate), suggesting an “energy leak” • A (possibly) related issue is that “normal” ...
AG Optical Systems iDK Manual V10 2014
... Once the secondary mirror has been aligned, carefully tighten the lock screws in a sequential order. AG Optical Systems recommends that you tighten one lock screw until you feel it just touch the secondary cell, repeat for the second lock screw, repeat for the third lock screw, and so on. Then, afte ...
... Once the secondary mirror has been aligned, carefully tighten the lock screws in a sequential order. AG Optical Systems recommends that you tighten one lock screw until you feel it just touch the secondary cell, repeat for the second lock screw, repeat for the third lock screw, and so on. Then, afte ...
Design and Analysis for Interferometric Testing of the GMT Primary
... meet GMT specifications, including the difficult requirement that the separate segments have matching radius of curvature. Additional corroborative testing will be performed to assure that the mirror segments are correctly ...
... meet GMT specifications, including the difficult requirement that the separate segments have matching radius of curvature. Additional corroborative testing will be performed to assure that the mirror segments are correctly ...
AstroMaster Series Telescopes
... needed reference material and helpful hints guaranteed to make your observing experience as simple and pleasurable as possible. Your telescope is designed to give you years of fun and rewarding observations. However, there are a few things to consider before using your telescope that will ensure you ...
... needed reference material and helpful hints guaranteed to make your observing experience as simple and pleasurable as possible. Your telescope is designed to give you years of fun and rewarding observations. However, there are a few things to consider before using your telescope that will ensure you ...
Meade® Illuminated Reticle Eyepiece Systems
... operated from internal batteries, with variable brightness control; batteries are included with each eyepiece. Corded Model: The same eyepiece as above, but with 6 ft. cord and connector for direct plug-in to the control panels of Meade LX200, LX200GPS, and ED/APO telescopes. Separation of the power ...
... operated from internal batteries, with variable brightness control; batteries are included with each eyepiece. Corded Model: The same eyepiece as above, but with 6 ft. cord and connector for direct plug-in to the control panels of Meade LX200, LX200GPS, and ED/APO telescopes. Separation of the power ...
Teacher Guide Whole-no background
... As an educational experience, The Journey to Palomar can lead to an entire unit of study for middle or high school students, which is far richer than the 90-minute video itself. Standards-based Unit Plans on three major themes of the film are provided for structuring a sequence of activities that ma ...
... As an educational experience, The Journey to Palomar can lead to an entire unit of study for middle or high school students, which is far richer than the 90-minute video itself. Standards-based Unit Plans on three major themes of the film are provided for structuring a sequence of activities that ma ...
IN 175 SkyView Pro 8 EQ
... casting at the top is threaded clockwise as far as it will go before attaching the shaft. Once the shaft is installed, turn the casting counter-clockwise until the top of the casting is flush with the mount. 7. Remove the knurled “toe saver” retaining screw on the bottom of the counterweight shaft a ...
... casting at the top is threaded clockwise as far as it will go before attaching the shaft. Once the shaft is installed, turn the casting counter-clockwise until the top of the casting is flush with the mount. 7. Remove the knurled “toe saver” retaining screw on the bottom of the counterweight shaft a ...
Herschel Observers` Manual
... InfraRed Submillimetre Telescope) its name was officially changed in the year 2000 in recognition of the 200th anniversary of the discovery of infrared radiation by William Herschel in 1800. Herschel covers the range from 55 to 672 microns (530-5000GHz) - a region that is effectively totally closed ...
... InfraRed Submillimetre Telescope) its name was officially changed in the year 2000 in recognition of the 200th anniversary of the discovery of infrared radiation by William Herschel in 1800. Herschel covers the range from 55 to 672 microns (530-5000GHz) - a region that is effectively totally closed ...
Discoveries with the Green Bank Telescope
... Stars form in clusters in the densest parts of molecular clouds under conditions that are still uncertain. The GBT is a superb instrument for studying this process on a variety of angular scales in the Milky Way and other galaxies as well. Mapping clouds in multiple molecular species reveals the ove ...
... Stars form in clusters in the densest parts of molecular clouds under conditions that are still uncertain. The GBT is a superb instrument for studying this process on a variety of angular scales in the Milky Way and other galaxies as well. Mapping clouds in multiple molecular species reveals the ove ...
Ground-Conjugate Wide Field Adaptive Optics for the ELTs F. Rigaut
... Figure 2 displays the natural and compensated median FWHMs at Cerro Pachon and Cerro Paranal for the three bands V, J and K, versus the eld of view. This gure shows that this compensation scheme, like any other phase compensation method, is very wavelength dependant. Apparently, a threshold is pas ...
... Figure 2 displays the natural and compensated median FWHMs at Cerro Pachon and Cerro Paranal for the three bands V, J and K, versus the eld of view. This gure shows that this compensation scheme, like any other phase compensation method, is very wavelength dependant. Apparently, a threshold is pas ...
1 Scope
... The MONS Field Monitor is needed because of the possibility of light from neighbouring stars, particularly variables, entering the field stop of the MONS Telescope and affecting the photometry. Although ground-based observations can provide a snapshot of the field of the target stars, they will not ...
... The MONS Field Monitor is needed because of the possibility of light from neighbouring stars, particularly variables, entering the field stop of the MONS Telescope and affecting the photometry. Although ground-based observations can provide a snapshot of the field of the target stars, they will not ...
MAGIC II Mirrors - Padua Astroparticle group.
... • 1 panel at ETH (Zurich) for test on mechanical implementation • 1 panel at MPI for water immersion and optical testing • 2 panels now in La Palma to be installed in Magic II (or MAGIC I?) ...
... • 1 panel at ETH (Zurich) for test on mechanical implementation • 1 panel at MPI for water immersion and optical testing • 2 panels now in La Palma to be installed in Magic II (or MAGIC I?) ...
XMM-Newton
The XMM-Newton, also known as the X-ray Multi-Mirror Mission and the High Throughput X-ray Spectroscopy Mission, is an orbiting X-ray observatory launched by ESA in December 1999 on an Ariane 5 rocket. It is named in honor of Sir Isaac Newton. The telescope was placed in a very eccentric 48 hour elliptical orbit at 40°; at its apogee it is nearly 114,000 kilometres (71,000 mi) from Earth, while the perigee is only 7,000 kilometres (4,300 mi).