... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

... Close inspection shows these strange columns of light occur over bright lights, and so likely are light pillars that involve falling ice crystals reflecting back these lights. ... The air was noted to be quite cold and indeed filled with small ice crystals, just the type known to create several awe-inspiring but well known sky phenomena such as light pillars , sun pillars , sun dogs , and moon halos . ... Publications with keywords: light - ice crystals . ... Light Pillars over Alaska . ...

... 2014 December 28 . Unusual Light Pillars over Latvia . ... The above image and several similar images were taken with a standard digital camera in Sigulda , Latvia in late 2009. ... The air was noted to be quite cold and indeed filled with small ice crystals, just the type known to create several awe-inspiring but well known sky phenomena such as light pillars , sun pillars , sun dogs , and moon halos . ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

... Surface Brightness of Background Light . Home . ... Data . ... WFPC2 Home . ... Instrument Home . WFPC2 History . ... LRF Data . ... Data Analysis Home . ... Instrument Handbook . Data Handbook . ... Input the surface brightness in magnitudes per square arcsecond. ... Galaxy U-B and B-V colors are drawn from Longo and deVaucouleurs 1983 for representative objects;V-R and R-I are estimated from WFPC2 Handbook Table 6.1. ... AB_xxxxx are AB magnitudes at the standard WFPC2 filter bands. ...

... What's New? Bad Astronomy . ... News . ... The questions was: "During a flight, I saw a round rainbow shaped like a doughnut. ... However, she said that all rainbows are actually circles, and that she could not find a name for this phenomenon. ... One is that rainbows really aren't full circles. ... Basically, rainbows are due to light getting bent ("refracted") inside of raindrops. ... It's called a "glory", and is formed in a somewhat different way than rainbows. ... 2008 Phil Plait. ...

... Using my little fractal asteroid generator I thought it would be fun to vbuild a hypothtical asteroid and see what kind of rotational lightcurves it would produce. There are a lot of free variables here - asteroid rotation axis, illumination direction and then there's a whole slew of surface properties which I could look at.... anyway here' a few examples... 0 degrees . ... 135 Degrees . ... All these angles are taken with respect to the viewer, and in the plane of the object's rotation. ...

... The general term for these waves is "Electromagnetic Waves". ... ASTR1001 Wavelengths · Electromagnetic waves, while all travelling at the same speed, can have different wavelengths (the distance between the crest of one wave and the next). ... Red Light: Wavelength 700nm Green Light: Wavelength 550nm Blue Light: Wavelength 400nm Ultra-Violet Light: Wavelength 300nm ASTR1001 The Electromagnetic Spectrum · Electromagnetic waves can have any wavelengths at all: anywhere from picometres to light-years....

... Plate bending . ... The plug-plates of SDSS project are responsible for locating the optical-fiber plugs spatially and for defining the plug tilt with respect to the surface of best focus. ... It can be seen from the graphs that after bending the plate and adding a central suport, the curvature of the plate was quite near that of the desired Kent005 curve. ... Upon adding a central support, however, the slope of the plate decreases to a value slightly less than that of the Kent005 curve. ...

... Full cut-off fixtures . These fixtures contain and direct all their light downward. ... The fixtures can contain most any kind of lamp but usually are seen with high-pressure sodium or metal halide lamps, both reasonably energy efficient. ... Light Pollution and the U.S. National Science Education Standards . The only good thing about light pollution is that it makes an excellent topic for teaching and learning about science and technology and their relationships to society. ...

... Laboratory for Spectroscopy of Molecular Structures . ... Optics and spectroscopy of molecular and liquid crystals, fullerenes, superthin molecular films. Optical studies of structure, phase transitions, pretransitional phenomena, structural modifications in external field and under high pressure. ... Methods developed in the laboratory enable to determine in free standing films of different types liquid crystals values of polarization, two-dimensional constants of orientational elasticity. ...

... A good way to keep track of these concepts is the space-time diagram . ... The usual convention is that time runs up the diagram, so the bottom is the past, or early times, and the top is the future, or late times. ... The space-time diagram above shows particles with different velocities. ... The fancy light picture on the left shows both the past and future light cones of the event where the two worldlines cross, while the schematic version on the right is easy to use in more complicated diagrams....

Titan . ... Hubble Space Telescope Images of Titan's surface . ... Later that year, it will release the European-built Huygens probe for a descent through Titan's atmosphere. ... This artist's rendering shows the European Space Agency's Huygens probe descending into the atmosphere of Saturn's moon Titan after being released by NASA's Cassini spacecraft. ... This artist's rendering shows the Huygens probe on the surface of Saturn's moon Titan after being released by NASA's Cassini spacecraft. ...

Next: Caverns in Binary Systems Up: Ejectors in Massive Binary Previous: The Number of Ejectors . In the very first years after the discovery of radiopulsars, it became clear that for some reason they avoid forming binary systems. ... Illarionov and Sunyaev (1975)[ 76 ] noted the fact that coherent radiowaves with a wavelength longer than 75 cm, which make it possible to observe most of the radiopulsars, are absorbed effectively in the stellar wind of a normal star. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Our Galaxy . ... Stars . ... Space Flight . ... This activity is believed to be promoting the unusually high rate of star formation seen in M82. ... Radio image of M82 made with the MERLIN and VLA telescopes. Insets show MERLIN images from April 25th and May 3rd 2009 demonstrating the sudden appearance of the mystery object.€а All images are at a frequency of 5 GHz. ... Mystery object in Starburst Galaxy M82 . ...

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

... Обзор LPR фильтра. Впечатления от наблюдений с LPR фильтром. ... Характеристики цветных фильтров Baader-Planetarium . Мой перевод pdf- файла о фильтрах с сайта Baader-Planetarium (379 кб) . ...

... This is usually defined as the direction pointing toward the center of the primary body. ... NODE: The place where the plane of one orbit crosses the plane of another. ... ORBITAL PLANE: The flat surface that would result if every point on the orbit of a body was connected to the center of its primary. ... PENUMBRA: The edge of the primary body's shadow. ... PERIOD : The time required for one body to orbit the primary body. ... PROBE: A vessel designed to pass and observe an astronomical object. ...

... Telescopes ћ Binoculars ћ Microscopes . Meade Ultra-High Transmission coatings (UHTC ) Group . ... Meade Standard Coatings: The optical surfaces of all Meade telescopes include high-grade optical coatings fully consistent in quality with the precision of the optical surfaces themselves. ... These specialized, and extremely advantageous, coatings are offered here as the Meade Ultra-High Transmission Coatings (UHTC) group, a coatings group available optionally on many Meade telescope models. ...

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