. Album : asv-album :: Travels to distant places and countries :: 2004/06 Leiden, Hague, Amsterdam (Netherlands) :: 01/06/04 Moscow-Leiden. Flight, trip to Leiden, first walk . Up . << Prev . A small architectural detail... Runaway car stop? . Next >> . Created with the tool album generator a script by D. Madison on Tue Jun 23 14:47:53 2015 .

... Why is this moon of Saturn so smooth? ... Astronauts on board the International Space Station first saw it far in the distance. ... Its early morning launch to orbit from Kennedy Space Center's pad 39A followed the long, graceful, eastward arc seen in this 2 minute time exposure. Teide Sky Trails . ... Pictured above, the space shuttle Endeavour lifted off in yesterday's early morning hours from Launch Pad 39A in Kennedy Space Center, Florida, USA, bound for the International Space Station (ISS). ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2005 August 24 . Epimetheus: A Small Moon of Saturn . Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA . Explanation: How did Epimetheus form? ... To help answer that question, this small moon has recently been imaged again in great detail by the robot spacecraft Cassini now orbiting Saturn . ... About APOD | ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Stars . ... Space Flight . ... Although they look tranquil here, observed up close such young stars would seethe and glare violently. ... Once thought to be a satellite of our own galaxy, increasingly the Small Magellanic Cloud is believed to be an interloper from the intergalactic void which has wandered into its present location and will eventually recede away into the darkness. ... Your email address will not be published. ...

... Home aaa-logo-by-marcelo-cabrera-(fonts-traced)-updated-smaller . ... Lecture Series 2014-2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Published February 15, 2015 at dimensions 250 250 in aaa-logo-by-marcelo-cabrera-(fonts-traced)-updated-smaller . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Rough topography, a large mountain, impact craters, grooves, and steep scarps characterize this region. ... Dawn Science Team Presents Early Science Results . ... Scientists with NASA's Dawn mission are sharing with other scientists and the public their early information about the southern hemisphere of the giant asteroid Vesta. ... If you enjoyed this excerpt from a feature article and would like to receive our quarterly Mercury magazine, we invite you to join the ASP and receive 4 issues a year. ...

Presented on Tuesday, January 7, 2003 . We construct a detailed longitude-velocity diagram through the actual midplane of the Galactic H I disk. The Galactic midplane definition is based on single-dish sky surveys, and the detailed l-v slice ( Fig. 1 ) is extracted from the Canadian Galactic Plane Survey ( CGPS ; Taylor et al. 2003 ). ... Note: other slices offset from this one were not shown in the AAS poster for lack of space, but they are available here . ...

... Abstract Return the value of the smallest (negative) number representable in a SpiceInt variable. ... Detailed_Output The function returns the value of the smallest (negative) number that can be represented in an SpiceInt variable, where SpiceInt is a typedef defined in SpiceZdf.h. The returned value will be less than or equal to -2147483647. ... Particulars The typedef SpiceInt is used throughout the CSPICE API to refer to integers; the precise type of integer is platform-dependent. ... Files None....

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

... Some equations, identities or formulas contain small quantities , and these can be made much simpler and easier to use by sacrificing a little accuracy. ... When we derive squares, 3rd powers, 4th powers etc. of numbers larger than 1 , the results are always bigger , while for numbers smaller than 1 , the results are always smaller . ... power . ... number . ... The above also holds for negative numbers, if one understands "bigger" and "smaller" to refer to the absolute value (the value without sign...

. This is a new popup window - close it when you are done . Submitted by Mario Motta M.D. on 08/27/2008 20:03:30 . Veil East, NGC6992 . Very small segment of Eastern Veil Nebula, 17x17 arc minute view, but very detailed . Logon to post a follow-up comment or review comments from others . Copyright (c) Amateur Telescope Makers of Boston, Inc. About Us Contact Us

... The formation of the disks of disk galaxies remains poorly understood. ... Many disk galaxies have only the thin disk component, with no bulge or significant thick disk. ... Almost all disk galaxies have an exponential radial surface brightness distribution. The reason for this exponential form is not known; nor is it known when the exponential form is established. ... We would compare low redshift galaxies observed in the I band with galaxies at z =0.5 in the J band and at z =1 in the H band. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . Springtime observing for small telescopes . ... small (4 inches or smaller) . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... Archives . ... Please, do not confuse adaptive filter (hereafter, AF ) with adaptive optics (hereafter, AO ). ... Not just the hardware part, but I was interested in how astronomers have applied theories and algorithms of AF to acquire cleaner data that are processed with speed and efficiency. ... A long story short, against my expectation for frequent allusion from ADS, adaptive filter turned out to be almost [MADS]. ... Tags: adaptive filter , adaptive optics , MADS . ... Comment ( RSS ) | ...

About us . ... Telescopes . ... Apart from the 6-meter telescope BTA two small telescopes are operative at SAO: the 1-m and 0.6-m telescopes, both manufactured by Carl Zeiss, Jena, are located near the BTA. ... These telescopes are used for adjusting the equipment and techniques of observations used at the BTA. ... The observational time allocation and also a brief description of the equipment of the 1-m telescope, which is used either permanently or mainly on this telescope, are presented below. ...

... In brief: the frequency-dependent radiative transfer equation is solved for a dust under assumption of spherically-symmetric geometry for its distribution taking into account particle size distribution and quantum heating effects for the very small dust particles. ... Table: Model parameters for IRAS04296+3429. ... parameter . ... hot dust shell) . ... The best fit to the spectral energy distribution of IRAS04296 is shown by heavy solid line (see Table2 for details concerning parameters of the model...

Using the Huygens and Babinet principles van de Hulst [ 11 ] considered the problem of light scattering and extinction by a particle having the size and the refractive index . ... The absorption cross-section is . ... The range of applicability of the anomalous diffraction theory for the scattering amplitude is limited by small angles, however the formules for the cross-sections became good approximations for a wide class of particles. ... This problem for spherical particles was solved by A.Ya. ...

... A cyclic convolution of an input image weighted by gives output according to the following prescription: . ... The Fast Fourier Transform (FFT) algorithm used by the task works most efficiently if each dimension of the image is a multiple of 2, 3, 5 or 7. ... If the image is large and the number of convolvers small, this will generally be the FFT method; however direct convolution becomes more efficient if the image is divided into many small patches of different convolution. ...

Two weeks ago a small space rock called 2008 TC3 made astronomical history as the first asteroid that both impacted the Earth and was also observed telescopically while still out in space and on its collision path with our planet. Since then, three more small near-Earth objects making very close approaches have been picked up by the Mount Lemmon Survey in Arizona, the third just a day ago. ... See also: Objects currently known to be within 45 million kilometres of the Earth . ...