The AstroGuide . ... AstroGuide | ... AstroGuide Listing . Login . See many more Astronomy Listings by: Category or Alphabet . ... Last Update July 27, 2006 . Listed Since July 15, 1998 . ... Web Site . http://janus.astro.umd.edu/astro/distance/ . ... Web . www.astronomy.net . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

. Distance Conversion Calculator . by Matt Oltersdorf 2000 04 02 2225 UTC . Type the known value into the appropriate units field, click the . calculate button and the program will show all values for . related unit properties. Kilometers . Meters . mm . Inches . Feet . Yards . Miles . Astronomical Units (A.U.) . Light Year (LY) . Parsec (pc) . Kilometers . Miles .

. Album : asv-album :: Travels to distant places and countries :: 1997/08 Kyoto, Nara (Japan) :: 22/08 Imperial Palace park, KICH . Up . << Prev . Imperial Palace park. At the distance you can see the mountain with a cross on it. On August 16l . night, it is illuminated by fires. Next >> . Photo album generated by album generator from David Ljung 's MarginalHacks on Tue Jun 23 14:46:15 2015 .

... Bad Astronomy . ... Mad Science . ... Suppose a star explodes into a supernova at a distance of about 100 lightyears. ... Supernovae are very bright, and they put out light at all different wavelengths. ... For a typical supernova to be as bright to the human eye as the Sun, it would have to occur at a distance of about a light year from the Earth. ... For a supernova to be as bright as a good solar flare, it would have to be at a distance of about 5-60 light years or so away. ... 2008 Phil Plait. ...

... This distance is equivalent to 3.26 light years. ... The Universe was now a large place and the intrinsic energy output of the stars had to be huge in order that their light could reach us. ... Newton implicitly assumes space is flat . ... An Orbit in Curved Space This is a prediction made by General Relativity and confirmed by direct observation of Mercury. The Ant Universe in Flat Space . ... Hubble noticed a correlation between recessional velocity and distance. ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... Publications of the ASP (PASP) . ... Determining the Earth-Sun Distance Using Mars . ... For more than a century, astronomers tried to measure the average Earth-Sun distance, known as the astronomical unit (AU), by observing rare transits of Venus. ... By measuring this displacement (parallax) and knowing the length of the baseline between the two observing sites, one can determine Mars?s distance. ...

... Tonight's Sky . тАФ . ... RISE тАФ . ... Observing . ... Star Atlas . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... What exactly is a degree in terms of the distance between stars? ... A measurement in degrees has nothing to do with the true distances between celestial objects. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... The region extensions added to the source list comply with the ``ASC FITS File Designers' Guide'' specifications. ... Additionally, the non-standard COVERAGE attribute is provided for order regions and the spatial background region, and the non-standard pair, COVBELOW and COVABOVE , is provided for image regions. ... There is only one extension of this kind. ... image regions . ... There is one extension of this kind for each requested order, for each selected source. order background regions . ...

Rastorguev А.S. "Astronomical Distances" (Lecture course for postgraduates, 2009-2016) . Part 1. ... Trigonometric parallaxes of stars. Moving clusters distances. ... Photometric distances: general approach. Normal stars as "standard candles". ... Main Sequence fitting or distance scale of star clusters. ... Moving photospheres technique. Cepheid distance scale and P-L relations. RR Lyrae distance scale. ... Globular clusters luminosity function. ...

Authors: V.A. Marsakov , Yu.G. Shevelev , . ... Systematic effects of random errors in distances and reddening, metallicity and luminosity indices of F stars from catalogues with photometry are investigated. ... Исследуется систематические эффекты случайных ошибок в определениях расстояний, покраснений, индексов металличности в светимости F -звезд из каталогов с -фотометрией. ...

splitxyz - filter to divide (x,y,z[, distance ,heading]) data into (x,y,z) track segments . splitxyz [ xyz [ dh ] file ] -C course _ change [ -A azimuth / tolerance ] [ -D minimum _ distance ] [ -F xy _ filter / z _ filter ] [ -G gap _ distance ] [ -H [ nrec ] ] [ -M ] [ -N namestem ] [ -S ] [ -V ] [ -Z ] [ -: ] [ -bi [ s ][ n ] ] [ -bo [ s ] ] ... If xy _ filter is non-zero, the data is first divided into segments and then the x,y values of each segment are filtered separately. ...

... After all we cannot send a probe to the star Altair to confirm that it is 17 light years away. ... The "Bessel determined that the star 61 Cygni was about ten light years away" Earth goes around the Sun in one year, so in six month it is in the opposite position in its orbit. ... In 1838 Bessel determined that the star 61 Cygni had a parallax of 0.314 arcseconds and therefore the star was about ten light years away (today the distance is more precisely measured to be 11.4 light years). ...

Estimates for the Set-theoretic Distance between Orbits of Celestial Bodies . ... It is reasonable to use preliminary simple criteria for the proximity to intersection based on estimates of set-theoretic distance ( , 0 ) between orbits , 0 of celestial bodies , 0 . ... We describe here two simple criteria and one more complicated one. ... The third one requires calculation of the distance itself and it amounts to solving a trigonometric equation of the 8-th degree. ...

Альтернативный форум . Scientific.ru Все форумы . ... Time (@) - 13.04.2007 09:15 . Re: Anisotropy in the Hubble constant as observed in the HST Extragalactic Distance Scale Key Project results . x203a; x203a; x203a; в ответ на: Anisotropy in the Hubble constant as observed in the HST Extragalactic Distance Scale Key Project results Котофеич . ... Re: Anisotropy in the Hubble constant as observed in the HST Extragalactic Distance Scale Key Project results Котофеич, 13.04.2007 13:37 . ...

... Primary Mirror after being stripped and recoated in 3-layer protected silver (NiCr-Ag-NiCr) on 12 September 2009. image: CIMG7901.jpg . ... Primary Mirror held by (yellow) handling tool being lifted off transport container (note the tennis balls it rested on), to be put on wash cart during unpacking at VISTA on 29 March 2008. image: P1060207.jpg (taken 29/03/08) . ... VISTA Mirror Blank: Shape of 4m primary mirror blank being tested at Schott Glas in Germany. image: M1_shape_checking-300dpi.jpg . ...