Faster access than browser!
37 relations: Amateur astronomy, Amateur telescope making, Apochromat, Asteroid, Astrometry, Astrophotography, Blink comparator, BOOTES, Cardinal point (optics), Catadioptric system, Charge-coupled device, Clyde Tombaugh, Coma (optics), Comet, Cooke triplet, Dwarf planet, Ecliptic, F-number, Field flattener lens, Field of view, List of telescope types, Lowell Observatory, Meteoroid, Minute and second of arc, Newtonian telescope, Non-achromatic objective, Nova, Objective (optics), Planet, Pluto, Proper motion, Reflecting telescope, Refracting telescope, Ritchey–Chrétien telescope, Schmidt camera, Stellar classification, Variable star.
Amateur astronomy
Amateur astronomy is a hobby whose participants enjoy observing or imaging celestial objects in the sky using the unaided eye, binoculars, or telescopes.
New!!: Astrograph and Amateur astronomy · See more »
Amateur telescope making
Amateur telescope making is the activity of building telescopes as a hobby, as opposed to being a paid professional.
New!!: Astrograph and Amateur telescope making · See more »
Apochromat
An apochromat, or apochromatic lens (apo), is a photographic or other lens that has better correction of chromatic and spherical aberration than the much more common achromat lenses.
New!!: Astrograph and Apochromat · See more »
Asteroid
Asteroids are minor planets, especially those of the inner Solar System.
New!!: Astrograph and Asteroid · See more »
Astrometry
Astrometry is the branch of astronomy that involves precise measurements of the positions and movements of stars and other celestial bodies.
New!!: Astrograph and Astrometry · See more »
Astrophotography
Astrophotography is a specialized type of photography for recording photos of astronomical objects, celestial events, and areas of the night sky.
New!!: Astrograph and Astrophotography · See more »
Blink comparator
A blink comparator was a viewing apparatus used by astronomers to find differences between two photographs of the night sky.
New!!: Astrograph and Blink comparator · See more »
BOOTES
BOOTES, the Burst Observer and Optical Transient Exploring System, is a network of astronomical observatories with sites in Southern Spain, New Zealand, China and Mexico (mostly 0.6m diameter telescope with EMCCD camera at the Cassegrain focus and a g'r'i'ZY filterset. The main goal of the network is to quickly observe transient events within few seconds/minutes of being detected by scientific satellites. BOOTES provides an automated real time observing response to the detection of Gamma Ray Bursts GRBs. Error box size depending, it uses wide field cameras (WFC), ultra wide field cameras (UWFC) and narrow field cameras (NFC) attached to small robotic telescopes or the telescopes themselves. To study GRBs it is of the utmost importance to perform prompt optical follow up observations, to detect longer wavelength transient emission associated to them. BOOTES can perform such follow ups. Its scientific objectives include: • Simultaneous and quasi simultaneous observations of GRB error boxes. • Detection of optical flashes of cosmic origin. • All-Sky monitoring with the CASANDRA cameras down to 10th mag every 60 s. • Monitoring of different types of variable objects (galactic or extragalactic) down to 20th mag in order to search for optical variabilitity. • Discovery of comets,, asteroids, variable stars, novae and supernovae. BOOTES is part, within the framework of an international collaboration led by Spain, which started in order to support the ESA’s satellite INTEGRAL with ground-based observations. The project also was focused to perform rapid follow up observations of events detected by several spacecraft (BATSE, BeppoSAX, RossiXTE, IPN, Hete-2, Swift and Fermi). Results in the GRB field are multifold: • Predetection images: they set up upper limits for any possible precursors. • Simultaneous images: the first was achieved last 20 February 2001, although no counterpart was detected. • Follow-up images: with several gamma-ray bursts being discovered or monitored starting several dozen of seconds after the onset of the event.
New!!: Astrograph and BOOTES · See more »
Cardinal point (optics)
In Gaussian optics, the cardinal points consist of three pairs of points located on the optical axis of a rotationally symmetric, focal, optical system.
New!!: Astrograph and Cardinal point (optics) · See more »
Catadioptric system
A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses (dioptrics) and curved mirrors (catoptrics).
New!!: Astrograph and Catadioptric system · See more »
Charge-coupled device
A charge-coupled device (CCD) is a device for the movement of electrical charge, usually from within the device to an area where the charge can be manipulated, for example conversion into a digital value.
New!!: Astrograph and Charge-coupled device · See more »
Clyde Tombaugh
Clyde William Tombaugh (February 4, 1906January 17, 1997) was an American astronomer.
New!!: Astrograph and Clyde Tombaugh · See more »
Coma (optics)
In optics (especially telescopes), the coma, or comatic aberration, in an optical system refers to aberration inherent to certain optical designs or due to imperfection in the lens or other components that results in off-axis point sources such as stars appearing distorted, appearing to have a tail (coma) like a comet.
New!!: Astrograph and Coma (optics) · See more »
Comet
A comet is an icy small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process called outgassing.
New!!: Astrograph and Comet · See more »
Cooke triplet
The Cooke triplet is a photographic lens designed and patented (patent number GB 22,607) in 1893 by Dennis Taylor who was employed as chief engineer by T. Cooke & Sons of York.
New!!: Astrograph and Cooke triplet · See more »
Dwarf planet
A dwarf planet is a planetary-mass object that is neither a planet nor a natural satellite.
New!!: Astrograph and Dwarf planet · See more »
Ecliptic
The ecliptic is the circular path on the celestial sphere that the Sun follows over the course of a year; it is the basis of the ecliptic coordinate system.
New!!: Astrograph and Ecliptic · See more »
F-number
The f-number of an optical system (such as a camera lens) is the ratio of the system's focal length to the diameter of the entrance pupil.
New!!: Astrograph and F-number · See more »
Field flattener lens
Field flattener lens is a type of lens used in modern binocular designs (e.g. Canon 10 x 42 L IS WP, 18 x 50 IS All Weather and Swarovski EL 8.5 x 42, EL 10 x 42) and in astronomic telescopes.
New!!: Astrograph and Field flattener lens · See more »
Field of view
The field of view is the extent of the observable world that is seen at any given moment.
New!!: Astrograph and Field of view · See more »
List of telescope types
The following are lists of devices categorized as types of telescopes or devices associated with telescopes.
New!!: Astrograph and List of telescope types · See more »
Lowell Observatory
Lowell Observatory is an astronomical observatory in Flagstaff, Arizona, United States.
New!!: Astrograph and Lowell Observatory · See more »
Meteoroid
A meteoroid is a small rocky or metallic body in outer space.
New!!: Astrograph and Meteoroid · See more »
Minute and second of arc
A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.
New!!: Astrograph and Minute and second of arc · See more »
Newtonian telescope
The Newtonian telescope, also called the Newtonian reflector or just the Newtonian, is a type of reflecting telescope invented by the English scientist Sir Isaac Newton (1642–1727), using a concave primary mirror and a flat diagonal secondary mirror.
New!!: Astrograph and Newtonian telescope · See more »
Non-achromatic objective
A non-achromatic objective is an objective lens which is not corrected for chromatic aberration.
New!!: Astrograph and Non-achromatic objective · See more »
Nova
A nova (plural novae or novas) or classical nova (CN, plural CNe) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star, that slowly fades over several weeks or many months.
New!!: Astrograph and Nova · See more »
Objective (optics)
In optical engineering, the objective is the optical element that gathers light from the object being observed and focuses the light rays to produce a real image.
New!!: Astrograph and Objective (optics) · See more »
Planet
A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.
New!!: Astrograph and Planet · See more »
Pluto
Pluto (minor planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune.
New!!: Astrograph and Pluto · See more »
Proper motion
Proper motion is the astronomical measure of the observed changes in the apparent places of stars or other celestial objects in the sky, as seen from the center of mass of the Solar System, compared to the abstract background of the more distant stars.
New!!: Astrograph and Proper motion · See more »
Reflecting telescope
A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image.
New!!: Astrograph and Reflecting telescope · See more »
Refracting telescope
A refracting telescope (also called a refractor) is a type of optical telescope that uses a lens as its objective to form an image (also referred to a dioptric telescope).
New!!: Astrograph and Refracting telescope · See more »
Ritchey–Chrétien telescope
A Ritchey–Chrétien telescope (RCT or simply RC) is a specialized variant of the Cassegrain telescope that has a hyperbolic primary mirror and a hyperbolic secondary mirror designed to eliminate off-axis optical errors (coma).
New!!: Astrograph and Ritchey–Chrétien telescope · See more »
Schmidt camera
A Schmidt camera, also referred to as the Schmidt telescope, is a catadioptric astrophotographic telescope designed to provide wide fields of view with limited aberrations.
New!!: Astrograph and Schmidt camera · See more »
Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
New!!: Astrograph and Stellar classification · See more »
Variable star
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.
New!!: Astrograph and Variable star · See more »
Redirects here:
Astrographic camera, Astrographs.
References
[1] https://en.wikipedia.org/wiki/Astrograph
