Field Programmable Gate Array
A Field Programmable Gate Array is a programmable hardware device used in signal processing applications.
A field is a mathematical construct to help visualize the effects of forces. The lines of the field indicate the direction a particle will move (be forced) if dropped into the field at that point.
Here Are the smaller fields that are involved with astronomy.
Physics
A major component of astronomy is physics which is refered to as astrophysics and high-energy astrophysics. A good way to put it is simply this.
Field characteristics
The field is similar to that of a bar magnet, but this similarity is superficial.
Lichfield is a city status in the United Kingdom and civil parish in Staffordshire, England. One of seven civil parishes with city status in England, Lichfield is situated 25 km north of Birmingham and 200 km northwest of central London....
WIDE FIELD SAGITTARIUS
The Milky Way runs from top to bottom in this photo taken in October of 1990. Sagittarius (the Archer), with its prominent Little Milk Dipper, dominates the center of the image.
[edit] Field generation
Stellar magnetic fields are believed to be caused within the convective zone of the star. The convective circulation of the conducting plasma functions like a dynamo.
Actual Field of View
By Paul Markov
Knowing the actual field of view for all your eyepieces can be very helpful if you rely on star hopping for finding deep sky objects.
Spiral field lines
Now connect--preferably with a red pen, or in some color different from that of the rest of the drawing--all points with the number 2, also the ones with 3, 4, 5, 6 or 7, and perhaps also those with 8, 9 and 10.
The field is unusual not only because the dipole is tilted and offset from the centre of the planet but also because the small-scale components of the field are relatively large.
The field is doughnut shaped (toroidal), containing giant versions of the Earth's Van Allen Belts that trap high-energy charged particles (mostly electrons and protons).
The field is so small that only a few foreground stars in the Milky Way lie within it; thus, almost all of the 3,000 objects in the image are galaxies, some of which are among the youngest and most distant known.
A force field generated by moving electrical charges. An electrical current running through a loop of wire generates a magnetic field. The strength of the field depends on the current and area of the wire loop.
Magnetic fields and turbulence in the gas clouds are both thought to hinder the gravitational collapse in varying amounts.
Academic field
This is a (partial) list of academic disciplines.
Natural sciences
Astronomy ...
THE HUBBLE DEEP FIELD
In December 1995, the Hubble Space Telescope, high above the Earth, focused on a tiny spot of dark sky for over 150 consecutive orbits. The result was the deepest view into space we had ever had up to that time.
Eyepiece Apparent Field of View (FOV) Table
Eyepiece
Apparent FOV
(degrees) ...
In 2369, the shuttlecraft Fermi was trapped in and destroyed by such a field. Traveling aboard the shuttle were Captain Jean-Luc Picard, Ensign Ro Laren, Keiko O'Brien, and Guinan.
Planet Atmospheres and Magnetic Fields
This data is from the National Space Science Data Center's Fact Sheet site. Click on a planet's name to bring up the fact sheet at NSSDC. I have put together a list of links to excellent tours of each planet.
Definition: magnetic field: A description of the strength of the magnetic force exerted by an object. Bar magnets have "di-polar" fields, as the force is exerted from the two ends of the bar.
The Galileo spacecraft exploring the area around Jupiter revealed that Ganymede has its own magnetic field. The stirring of its molten core of iron sulfide may have generated the magnetic field.
XMM-Newton observes Hubble Deep Field
XMM-Newton's image of the region containing the Hubble Deep Field North.
Field of view corresponds to 30 x 28 arcminutes with North toward lower left corner.
Map created in Guide 7.0 - 7°45' x 10°. North is up.
Centaurus Page ...
field of view
the area of sky visible in a telescope or binoculars
filter ...
Field intensity
The study of the intensity of the earth's magnetic field is valuable from the points of view of pure science and of engineering, and also for geological prospecting for mineral and energy resources.
Field-lens This is the lens within an eyepiece that gathers the light from the objective lens or mirror. It is the eyepiece lens that is nearest to the objective lens or the primary mirror.
Field Effect Transistor A tiny transistor amplifier in which the current flow between two terminals, called the source and the drain, ...
Field of View (FOV) - The amount of a scene that is captured by a given focal-length lens. Wide-angle, short-focal length lenses capture a wide field of view. Telephoto lenses and telescopes capture a very narrow field of view.
Field- something that exists throughout space and time, as opposed to a particle that exists at only one point at a time ...
Field
A way of explaining action at a distance.
Filar Micrometer ...
Field Guide to Atmospheric Optics by Larry Andrews.
Using Meteorological Forecasts to Predict Astronomical 'Seeing'. (2009) by Hervé Trinquet & Jean Vernin.
Fields of Astronomy
With the incredible advances of both technology and knowledge of physics since the early 17th century have come similar advances in astronomical technology and understanding.
Hadfield, Chris
Canadian astronaut who was a Mission Specialist on Space Shuttle missions in November 1995 and in April 2001, when he installed Canadarm2. He was the first Canadian astronaut to perform a spacewalk.
The Field Guide to the Stars and Planets by Donald H. Menzel;
1964; Houghton Mifflin Company Boston; ISBN 0-395-07998-5
The Night Sky by Ian Ridpath;
1994; Running Press, Pennsylvania; ISBN 1-56138-386-4 ...
Wide Field Camera 3
The STS-125 crew will install Wide Field Camera 3. The camera can detect three types of light: ultraviolet, visible and near infrared. UV is the kind of radiation that causes sunburn.
Wide Field of View. Schmidt telescopes can cover a wide field of view, the UK Schmidt Telescope for instance covers a 6° × 6° field on a single plate.
Battlefield Surveillance Aircraft
A History Of Balloons & Ballooning
Dassault Combat Jets: ...
Butterfield ~: a pocket sundial by, or in the style of, Michael Butterfield (Paris, 17th century).
STREWN FIELD - Area on the surface containing meteorites and fragments from a single fall. Also applied to the area covered by tektites, which are produced by large meteorite impacts.
Richest Field Telescopes (RFT). RFT's have short focal ratios of f/3 to f/5 and are used for wide-field observations, deep-sky objects, and comet studies and are excellent fast photographic systems.
Gravity Field Surveys
Another science experiment, like radio science but not strictly classified as such, does not use an instrument aboard the spacecraft.
field of view: what you see when you loook through a telescope or binoculars. Generally, the lower the magnification, the wider the field of view.
< previous page > < next page > ...
Field of View (FOV)
A telescope's viewing area, measured in degrees, arc minutes, or arc seconds. A telescope that can just fit the full moon into its complete viewing area has a field of view of roughly 30 arc minutes.
Geocentric ...
A field of small volcanoes is seen here. There are quite a few regions of Venus that are just covered with small basaltic volcanoes, similar to those seen in Hawaii. Yet there are many more of these! ...
FIELD OF VIEW
Another binocular specification describes how much field you actually see. More complex eyepieces allow a greater area of image to be seen, almost like a camera using a bigger piece of film.
The field originated with the work of Karl Jansky at Bell Labs in 1931, but only after the technological push of World War II did it grow into a distinct branch of astronomy.
The field we have defined is divisible into at least two parts, that of Astronomy proper, or " Astrometry," which treats of the motions, mutual relations and dimensions of the heavenly bodies; and that of Astrophysics, ...
Like field biologists who study the populations and life cycles of animal herds, the SOHO researchers analyzed the appearances and disappearances of large numbers of the small magnetic concentrations on the solar surface.
Wide field, "true-color" image
with satellite trail (more).
Brown dwarfs are actually
reddish, like the binary
DENIS 1228-1547, or
magenta in color for the
cooler and dimmer T-dwarfs
that are rich in methane.
force field - (n.)
A way of describing phenomena that result from action at a distance, that is, even though objects are not touching.
Fraunhofer lines - (n.) ...
A Wide Field Camera with its own mirror system
(62-206 eV) FOV 5 ° diameter
Science Highlights: ...
The new field of archeoastronomy has blossomed since its beginnings in the 1960s discoveries at Stonehenge, the world's most famous megalithic structure.
Magnetic field lines loop through the solar atmosphere and interior to form a complicated web of magnetic structures. Many of these structures are visible in the chromosphere and corona, the outermost layers of the Sun's atmosphere.
electric field A field extending outward in all directions from a charged particle, such as a proton or an electron.
Magnetic Field
Uranus' magnetic field is odd for it is not centered on the center of the planet and is tilted almost 60° from the axis of rotation. It is probably generated by motion at relatively shallow depths within Uranus.
Magnetic field lines
These lines are a way to show the structure of a magnetic field. A compass needle will always point along a field line. The lines are close together where the magnetic force is strong, and spread out where it is weak.
MAGNETIC FIELD
A magnetic field is a region near a magnet where other magnets are affected. The Earth's magnetic field is probably caused by its molten iron-nickel core.
Magnetic Field: Jupiter has a very strong magnetic field. The magnetic field is probably generated as the planet spins its deep metallic-hydrogen layer with electrical currents .
Magnetic Field
The area near a planet where magnetic forces can be detected.
MMU ...
Magnetic field on Moon is not polarized; worthless for navigation
14
Fifteen liters of water ...
 See also: Earth, Time, Light, Solar, Planet
|
