August 3, 1998 . ... An example of the EUV large-scale chains revealed by the modified TRACE EUV images. (a) - The original TRACE EUV (171 A) mosaic image of August 3, 1998. Some thin chains and threads are seen inside the active complexes A and B in the north-west and south-west sectors of the disk. Large-scale structures outside the complexes are hardy visible. (b) - The same TRACE image, but after a modification. ... Back to the page of the TRACE chains . ... Last update: 9 August 1998 . ...

... Its perihelion would occur on April 1, 1997, at which point the comet would be only 0.92 astronomical units from the Sun, just within the orbit of Earth. ... Taken in April 1993, the photo showed the comet over 13 astronomical units from the Sun, well beyond the orbit of Saturn. ... Hale, as in Comet Hale-Bopp, has written a book, Everybody's Comet (available through the ASP Catalog) and coordinated an Internet project, "Hale-Bopp: Live in the American Classroom." ... Anatomy of a comet. ...

... Operating at a wavelength of 10 ?m, it produces a 135њx135њ image with a resolution of 0.9њ. ... The clouds move from the west-southwest. ... At the same time as the IR images, visible light images were taken with an Apple Computer QuickTake electronic camera. ... At 1540 MDT, the large central cloud is visible in both images. At 1544 MDT, a distinctive cloud is apparent near the center in the visible image and right of center in the IR. The performance of the SDSS cloud scanner is excellent. ...

Calibration targets Sour ce Energy Flux Simplicity Var keV HZ 43 0.2 Bright WD No Sirius B 0.2 HZ43 WD No /10 RXJ1856 1 Faint NS, No simple 1ES0102 0.4-1.5 Bright Complex No PKS2155 0.2Med Blazer Yes 20+ Capella 0.2-2 Bright Brems + Yes lines AR Lac Brems + lines HR 1099 0.5-6 Bright Brems + No lines Algol 0.5-6 Bright Brems + lines Crab 0.5Bright ...

Interstellar matter. Galaxies 77 Properties of the interstellar gas clouds I.V. Gosachinskij St.Petersburg branch of Special Astrophysical observatory, St.Petersburg, Russia The characteristics of interstellar gas clouds play the main role in any theories of star formation. ... So the neutral atomic clouds may be named as "grand parents" of stars and their properties play genetic role for whole chain of matter transformations in the galaxies. ... Ta r : T a : V : l b l b Fig. ...

... Lagoon Nebula, Trifid Nebula and the NGC 6559 Complex . The summer Milky Way brings with it the bright Messier nebulas of M8 (Lagoon) and M20 (Trifid) as well as the NGC 6559 Nebula Complex in Sagittarius. The Lagoon takes its name from the dark nebula that bisects the nebula. ... The NGC 6559 complex (upper left nebulosity) consists of the emission and reflection nebulas of IC1275, IC1274, IC4681 and IC4685. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... Flux density at 1 GHz (/Jy): 20 . ... Molonglo at 408 MHz (3': S=35.5 Jy) and Parkes 64-m at 5 GHz (4': S=7.8 Jy). ADS . ... NRAO 140-ft at 10.6 GHz (3': S=6.8?1.5 Jy). ... VLA observations of nearby source, plus Einstein observations. ... VLA at 327 MHz (1'), 1.5 (7''?14'') and 5 GHz (7''), including spectral comparison. ... VLA at 74 MHz (36''?39'': S=76?10 Jy), 324 MHz (13'': S=39?8 Jy) and 1.5 GHz (17''?19'': S=11.5?1.5 Jy), plus review of flux densities and XMM observations. ...

Properties of the interstellar gas clouds . ... The angular resolution of this Survey was 2.4' x 130', velocity resolution was 6.3 km/s, r.m.s. fluctuations of antenna temperature (T a ) was 0.25 K. All clouds with kinematical distances r a Some selection effects were discovered and our statistic results were corrected for them. Figure 1. ... In the very high mass range the number of neutral gas clouds may be decreased because of gravitational instability or/and molecularization. ...

... Earth is the tiny spot between Jupiter and the Sun). ... Distance Radius Mass Name Orbits (000 km) (km) (kg) --------- ------- -------- ------- ------- Sun 697000 1.99e30 Jupiter Sun 778000 71492 1.90e27 Saturn Sun 1429000 60268 5.69e26 Uranus Sun 2870990 25559 8.69e25 * Neptune Sun 4504300 24764 1.02e26 * Earth Sun 149600 6378 5.98e24 Venus Sun 108200 6052 4.87e24 Mars Sun 227940 3398 6.42e23 Ganymede Jupiter 1070 2631 1.48e23 + Titan ... Extrema .. ...

... Satellite data ] . SMIS ] . The program is designed to process the specific AVHRR instrument data for calculation and analysis of temperature fields on the sea surface and upper level of clouds. It performs brightness correction for visible channels with regards to clouds altitude. ... The program features a wide variety of classification algorithms (including two-dimensional histogram analysis) and enables to construct personal procedures for classification. ... Back to SMIS Home Page . ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

... The ancient chronical said about the colour rings around the Sun and the Moon, about three suns in the sky, light columns, bright lightning, different "comets" rushing to the Earth, moving among the stars or round the Earth with the sky. All these occurrences may be divided into three categories: one that occur in the near or far space, processes going on in the Earth atmosphere under the influence of cosmic factors and at last the occurrences connected with the Earth atmosphere. ... Rainbow . ...

Numerical simulation of electromagnetic scattering by morphologically complex objects Janna M. Dlugach*, Michael I. Mishchenko** *Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kyiv, Ukraine **NASA Goddard Institute for Space Studies, New York, USA Radiation mechanisms of astrophysical objects: classics today 21 ­ 25 September, 2015, St.Petersburg. ... Phase angle dependence of the degree of linear polarization for the center of the Jovian disk. ...

... Invisible airwaves crackle with life Bright antenna bristle with the energy Emotional feedback on timeless wavelength Bearing a gift beyond price, almost free All this machinery making modern music Can still be open-hearted. ... You can choose a ready guide in some celestial voice. ... SONG: Different Strings Who's come to slay the dragon, Come to watch him fall? ... Tide Pools When the ebbing tide retreats Along the rocky shoreline, It leaves a trail of tidal pools In a short-lived galaxy. ...

... Развивающая игрушка Лягушка Bright Starts привлечет ребенка красочным видом, подарит новые ощущения и вскоре станет любимой игрушкой, приятной и веселой. ... Цвет: розовый . ... Цвет: Коричневый . ... Цвет: натуральный . ... Кружка имеет силиконовую крышку оранжевого цвета с прорезью для питья. ... Цвет: синий . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Moon . ... Stars . ... Space Flight . ... Monthly Sky Notes . ... June . ... NASA has been studying NCLтАЩs for some time and are trying to determine if there is a relationship between climate change and these wonders of the night sky. ... Spica and Saturn actually form a triangle with the bright orangish star Arcturus which is higher in the sky. ... The ancient Greeks saw the stars of Libra as part of Scorpius, specifically the scorpionтАЩs claws. ...

... The described algorithm is suitable for measurements of complex images of stars. ... a) the zero-based number of stars in the complex (multicentric) image, . b) set of preliminary coordinates - x i , y i , for all stars, index i is number of a star, . ... i - index of a star in the complex image; . ... These parameters are calculated by a nonlinear method of a least squares.The main output parameters of this algorithm are x i , y i ; where the index i is number of a star in the multicentric image. ...

Тема : Nubecula Minor (Cape Clouds) - Малое Магелланово Облако (Small Magellanic Cloud), карликовая галактика NGC 292 в созвездии Тукан (Tucana) .. ... Nubecula Minor (Cape Clouds) - Малое Магелланово Облако (Small Magellanic Cloud), карликовая галактика NGC 292 в созвездии Тукан (Tucana) .. ... Малое Магелланово Облако (Small Magellanic Cloud, NGC 292) .: . ... Как найти Малое Магелланово Облако (Small Magellanic Cloud, NGC 292)? ... NGC 292, Small Magellanic Cloud (SMC), Малое Магелланово Облако .. ...

You Can Make Stellar Images Brighter . Articles | ... A few months ago I wrote an article titled "You Can’t Make Them Brighter". So why am I now writing that you can make them brighter. ... The image of a focused star is actually a small disk called the Airy disk, named after the 19 th century scientist Sir George Airy. ... For a given aperture, a smaller Airy disk means that the light is focused to a smaller disk and is therefore brighter. ... www.astronomy.net . About Astronomy Net | ...

... The main field of my investigations is stellar spectrophotometry. As a result of scientific activity of our group spectrophotometric catalog was created including energy distribution data on 900 stars in the range 3200-7600AA and 250 stars in the range 6000-10800AA (Voloshina et al., Spectrophotometry of Bright Stars, ed. I.N.Glushneva, 1982, Moscow, Nauka, in Russian). ...