... 2004 December 8 . In the Center of the Heart Nebula . ... The red glow and the larger shape are all created by a small group of stars near the nebula's center. A close up spanning about 30 light years contains many of these stars is shown above in a recent image taken by the Canada France Hawaii Telescope . ... The Heart Nebula is located about 7,500 light years away toward the constellation of Cassiopeia . News: The answer to Lewin's Challenge APOD can be found here . ... About APOD | ...

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Pulkovo Photographic Plate Database . To find a certain plate, type its number, choose instrument and click button FIND Instrument: Normal Astrograph 26-inch refractor Plate number: . To find plates with a certain sky area: choose instrument, type coordinates (R.A. and Dec.) of the center of this area, type radius of this area, type (optionally) names of required objects, and click button FIND . ...

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EPIC ESAC Correct treatment of fast mode ARFs Marcus G. F. Kirsch , G. Schoenherr, E. Kendziorra, M.J. Freyberg Marcus Kirsch , XMM-Newton European Space Astronomy Center Page 1 menu EPIC ESAC Ї recap fast mode operations Ї Extraction region normalization treatment in fast modes Ї arf generation window versus fast modes Marcus Kirsch , XMM-Newton European Space Astronomy ...

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function fringevissq,c,k,n,normal=normal . ... Zero if no counts. The first index in the frames must correspond to the phase bins. Use k to select a baseline, if multiple baseline are present. ; . ... if n_elements(k) eq 0 then k=1 . ... nominator=add(abs(fringevis(c-avg(c),k))^2-s,n,r(0)-2)/n . denominator=(add(s,n,r(0)-2)/n)^2 . index=where(denominator eq 0,count) . if count gt 0 then denominator(index)=1 . ... if normal then norm_factor=4.0/sinc(float(k)/n0)^2 $ . ...

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At 08:32, Moscow Time, Soyuz TMA-14 descent vehicle returned to Earth. ... Russian cosmonaut G. Padalka (commander of ISS-19/20, commander of Soyuz TMA-14) and NASA astronaut M.Barratt (flight engineer of ISS-19/20 and of Soyuz TMA-14) completed their mission to the International Space Station (ISS) under the program of Expedition ISS-19/20, and a spaceflight participant, Canadian citizen G. Laliberte has completed his mission under the program of the 17th visiting mission. ...

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Stellarium 0.12.3 . ... Classes . ... Class List . ... Protected Member Functions | ... MpcImportWindow Class Reference . Window for importing orbital elements from the Minor Planet Center. ... void  . ... Public Slots inherited from StelDialog . ... Retranslate the content of the dialog. ... Signals inherited from StelDialog . ... Protected Attributes inherited from StelDialog . ... Public Member Functions inherited from StelDialog . ... virtual void MpcImportWindow::createDialogContent . ...

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... It is found that the metallisity distribution of disk stars has a gap which subdivide the disk population into two groups. The distribution may be described by the sum of two normal curves which are centered at [Fe/H]=-0.22 and +0.08. The curves can be interpreted as distributions of random errors in metallisity of sample stars. This leads to the conclusion that all stars in each group have actually the same value of [Fe/H]. ... Рассмотрен вопрос о происхождении подсистем Галактики. ...

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. An artist s impression of ULAS J222711-004547. This newly discovered brown dwarf is characterized by an unusually thick layer of clouds, made of mineral dust. These thick clouds give ULAS J222711-004547 its extremely red color, distinguishing it from normal brown dwarfs. Neil J Cook, Center for Astrophysics Research, University of Hertfordshire

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h3.title { font-size : 16pt; font-weight: bold; font-variant: small-caps; color :rgb(255, 255, 66); text-decoration : none ; text-align:center; } h2.title { font-size : 22pt; font-weight: normal; font-variant: small-caps; color :rgb(255, 255, 0); text-decoration : none ; text-align:center; } .inputclass { color : black; font-size : 12px; line-height: 11px; font-family :Verdana, Arial , Helvetica ; border-style: ...

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PRO lightcurve, w, t, f, lc, dm ;; extract lightcurve from 2d spectra ;; Input ; ; w wavelength array ; t timing array ; f 2d spectra f(w,t) ; ;; Output ; lc light curve F(t), where F = Int[ f(w)dw ] ; dm light curve in differential magnitudes ; ;; nw = n_elements(w) nt = n_elements(t) ;; trapezoidal integration lc = fltarr(nt) lc = 0. ...

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Japanese Probe to Halley's Comet . Courtesy of NASA's National Space Science Data Center . Sakigake is a test spacecraft similar to Suisei (Planet-A). It flew by comet P/Halley on its sunward side at a distance of about 7 million kilometers (4.4 million miles) on March 11, 1986. ... Sakigake made an Earth swingby on January 8, 1992. The closest approach was at 23 hours, 8 minutes, 47 seconds Japan Standard Time with a geocentric distance of 88,997 kilometers (55,303 miles). ...

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