Ground-Based Astrometry 2010-2020
... the most intriguing sources, often at the faint limits of such surveys, from which the science is squeezed out when precise astrometric techniques are applied. We list here some of the most important questions that can be answered during the next decade by targeted optical, infrared, and radio astro ...
... the most intriguing sources, often at the faint limits of such surveys, from which the science is squeezed out when precise astrometric techniques are applied. We list here some of the most important questions that can be answered during the next decade by targeted optical, infrared, and radio astro ...
Astronomical Formulae
... Where D is the diameter of the objective in inches Atmospheric conditions seldom permit Theta > 0.5". The Dawes Limit is one half the angular diameter of the Airy (diffraction) disc, so that the edge of one disc does not extend beyond the center of the other). The working value is two times the Dawe ...
... Where D is the diameter of the objective in inches Atmospheric conditions seldom permit Theta > 0.5". The Dawes Limit is one half the angular diameter of the Airy (diffraction) disc, so that the edge of one disc does not extend beyond the center of the other). The working value is two times the Dawe ...
Considerations about LIRIS MOS observations
... of slitlets is around 25. Observing technique: Given the high and variable sky emission contamination, observations in the near infrared range need frequent sampling of the sky emission. This is usually achieved by nodding the telescope setting the target along the slit at 2 or 3 different well spac ...
... of slitlets is around 25. Observing technique: Given the high and variable sky emission contamination, observations in the near infrared range need frequent sampling of the sky emission. This is usually achieved by nodding the telescope setting the target along the slit at 2 or 3 different well spac ...
Anatomy of a Supernova - hrsbstaff.ednet.ns.ca
... computer simulations used detonation waves to destroy a carbon-ricb whitedwarf star undergoing a runaway nuclear reaction. The problem with these early models was that the supersonic waves moved so rapidly that the stellar material couldn't expand before it burned. Since combustion at very bigh dens ...
... computer simulations used detonation waves to destroy a carbon-ricb whitedwarf star undergoing a runaway nuclear reaction. The problem with these early models was that the supersonic waves moved so rapidly that the stellar material couldn't expand before it burned. Since combustion at very bigh dens ...
Astronomical Facts `n Stuff
... A characteristic of eyepiece/telescope combinations. The actual field of view is the angle, measured on the sky, from one edge of the eyepiece field of view to the other. It is approximately equal to the apparent field of view divided by the magnification. Adaptive Optics or Active Optics Guiding on ...
... A characteristic of eyepiece/telescope combinations. The actual field of view is the angle, measured on the sky, from one edge of the eyepiece field of view to the other. It is approximately equal to the apparent field of view divided by the magnification. Adaptive Optics or Active Optics Guiding on ...
WFIRST-2.4: What Every Astronomer Should Know
... WFIRST-2.4 DRM. It also provides extensive references to background literature, which we have deliberately kept minimal in this brief summary. ...
... WFIRST-2.4 DRM. It also provides extensive references to background literature, which we have deliberately kept minimal in this brief summary. ...
The Sun
... A coronal mass ejection (CME) is an ejection of material from the solar corona, usually observed with a white-light coronagraph, such as SOHO’s LASCO instrument. The ejected material is a plasma consisting primarily of electrons and protons (in addition to small quantities of heavier elements such a ...
... A coronal mass ejection (CME) is an ejection of material from the solar corona, usually observed with a white-light coronagraph, such as SOHO’s LASCO instrument. The ejected material is a plasma consisting primarily of electrons and protons (in addition to small quantities of heavier elements such a ...
Moonlight project - Observations of Lunar rotation and Ephemeris by
... The Moon is the object of interest not only for scientists of planets, astronomy, space geodesy, but for engineers who is going to use the Moon as a new habitation space or a new factory. The Moon is not fully known for either case. Our presents understanding of the internal structure of the Moon is ...
... The Moon is the object of interest not only for scientists of planets, astronomy, space geodesy, but for engineers who is going to use the Moon as a new habitation space or a new factory. The Moon is not fully known for either case. Our presents understanding of the internal structure of the Moon is ...
Binocular Objects (MS Word)
... The most dramatic globular cluster in the northern sky, it is faintly visible to the naked eye as a fuzzy spot. Easily seen through binoculars with a magnitude of 5.9, it lies 23,000 light years away. Its diameter is 160 light years and has more than a million stars. M92 Another excellent globular c ...
... The most dramatic globular cluster in the northern sky, it is faintly visible to the naked eye as a fuzzy spot. Easily seen through binoculars with a magnitude of 5.9, it lies 23,000 light years away. Its diameter is 160 light years and has more than a million stars. M92 Another excellent globular c ...
A Determination of the Deflection of Light by the Sun`s Gravitational
... numberof bright stars in the field, such as would not occur again for many years. With weather conditions as good. as those at Sfax in the 1905 eclipses-and these were by no means perfect-it was anticipated that twelve stars would be shown. Their positions are indicated in the diagram on next page, ...
... numberof bright stars in the field, such as would not occur again for many years. With weather conditions as good. as those at Sfax in the 1905 eclipses-and these were by no means perfect-it was anticipated that twelve stars would be shown. Their positions are indicated in the diagram on next page, ...
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.