Astronomy Picture of the Day . Austrian Analemma . ... Today, the Sun crosses the celestial equator heading south at 14:49 Universal Time. ... Sunrise Analemma (with a little extra) . ... An analemma is that figure-8 curve that you get when you mark the position of the Sun at the same time each day throughout planet Earth's year. ... Ring Nebula Drawn . ... Hints of changing colors and subtle details are brought out in this remarkable sketch of the cosmic ring. ... Cocoon Nebula Wide Field . ...

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... Our restless globe and its companion. ... A Look at the Motions of the Earth in Space and How They Are Changing . ... Earth's rotation as viewed from above the north and south geographic poles. ... The Earth revolves around the Sun-also counterclockwise viewed from above the North Pole, clockwise viewed from the South Pole-to give us our years (see Figure 2 ). The plane of the Earth's orbit is called the ecliptic (where eclipses happen). ... Earth's orbit as viewed from the north ecliptic pole. ...

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• Astronomical Society
• ASP: To Every Season There is a Reason
• ASP: Jim Manning Named ASP Executive Director

... 2007 September 23 . The Equal Night . Credit: STS-68 Crew , NASA . Explanation: Today, the Sun crosses the celestial equator heading south at 0951 UT . Known as the equinox, the astronomical event marks the first day of autumn in the northern hemisphere and spring in the south . Equinox means equal night and with the Sun on the celestial equator, Earth dwellers will experience nearly 12 hours of daylight and 12 hours of darkness. ... About APOD | ...

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• APOD: 2007 October 31 - Halloween and the Ghost Head Nebula
• APOD: 2010 October 31 - Halloween and the Ghost Head Nebula
• APOD: 2001 October 31 - Halloween and the Ghost Head Nebula

. Chairs . Teachers . Postgraduate Students . Undergraduate Students . Courses . Head: A.M.Cherepaschuk . Vice-Head: A.C.Rastorguev . Webmaster: Yuri V. Pakhomov . pakhomov@sai.msu.su

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• Manual page headings
• Rudnitskij Georgij M. Home Page
• Headings

... Bad Astronomy . ... I think I will break from my usual format of Bad Astronomy/ Good Astronomy by saying that the way we define seasons currently is not strictly bad, but I feel (in my opinion!) that it could be better. The definition of when the seasons begin is at the moment of solstice or equinox; that is, winter (in the north) starts on December 22 nd and summer starts on June 22 nd . ... Now imagine breaking up the Sun's 46 degree up-and-down yearly swing into 1 day intervals. ...

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Next: Three-dimensional Data Analysis in IRAF and ZODIAC+ . ... A data analysis system has been developed at SRON, which has been designed to allow rigorous control of the quality of its processed data products. ... This means recording all parameters of all steps which lead to the establishment of the final data products (Figure 1 ). ... Figure: A processing pipeline is a sequence of tasks with several input/output files and parameters, which pass data from one task to the next. ...

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• IRAF Multiple Extensions FITS (MEF) Files Interface
• Proposed FITS Keywords and Column Headers for ALEXIS Mission Data Files
• ADASS 2003 Conference Proceedings

... April 3 , and we have been allocated a slot for an AstroStatistics session. ... When you submit an abstract, be sure to indicate a category of ?Other? and in the comments field state that it belongs with the AstroStatistics special session.If you have questions, please contact Aneta or me. There is also a page for this session on the astrostat google groups site. ... Tags: 2008 , AAS , April , astrostatistics , HEAD , Los Angeles , March , Methods , Omni , special session , techniques , workshop . ...

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• CfA/HEAD Software
• The AstroStat Slog HEAD
• Special Session on AstroStatistics at HEAD 2013

... Lecture course (2015/2016) "Galactic Astronomy" (PPT, PPTX) (for 2nd grade students, in Russian) . ... Lecture course (2015/2016) "Astronomical Distances" (PPT) (for postgraduate students, in English) . Lecture course program "Galactic Astronomy" (DOC, for 2nd grade students, in Russian) . Lecture course program "The Elements of Stellar Dymamics" (for 4-5th grade students, in Russian) . Tutorials on astronomy (PDF, PS, DJVU, HTML) . ... My Reviews and Talks (In Russian) . ...

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• FITShdr: FITS header viewer/editor

МОСКОВСКИЙ ЦЕНТР . НЕПРЕРЫВНОГО МАТЕМАТИЧЕСКОГО ОБРАЗОВАНИЯ . ... Механико-математический факультет МГУ ( в 2000 2010 см также MM-online ) . ... Институт лингвистики РГГУ . ... Школы города Москвы . ... Школа ?179 при МИОО . ... Специализированный учебно-научный центр МГУ (СУНЦ МГУ, школа им. А. Н. Колмогорова, бывш. ... Кировский Центр дополнительного образования ?Одаренный школьник? Центр развития дополнительного образования имени Бернулли (Краснодар) . ... Летняя экологическая школа (ЛЭШ) . ...

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• Address of MCCME
• Alexander Zilberman (04.04.1946--11.11.2010)

. Colleagues Bookmarks 70 birthday photos . Mail to shakura@sai.msu.su . Phone: (095) 939-50-06 .

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... Data was taken with lbw and the mock spectrometers on 05may09 to investigate the problem with higher time resolution and bandwidth. ... 6 172 Mhz bands were taken centered at: 1200,1300,1400,1500,1600, and 1700 Mhz. 8192 channels (20Khz resolution) was used for the low time resolution (.1 second dumps). 4096 channels (40Khz resolution) was used for the high time resolution (.001 second dumps). ... The total power was computed for each 172 Mhz band and then plotted vs time (.1 second resolution). ...

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• Arecibo Planetary Radar
• The CIMAFITS Headers
• astronomy header

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Parkes radio telescope . Australia Telescope Compact Array . ... Australia Telescope Online Archive (ATOA) . ... Australia Telescope 20GHz Survey . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... W ARWICK W ILSON is the Head of the Australia Telescope National Facility's Electronics Group . Warwick Wilson . ...

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• World Coordinate Systems (WCS) in FITS
• difx:vdifio [ATNF VLBI Wiki]
• SPC header items

... Moon . ... Comets and Asteroids . Meteors and Meteorites . ... WeтАЩve become rather obsessed with meteor showers in recent months, and for good reason. ... The first meteor shower peaks around 11- 12 November too, so keep an eye out. ... On 11 November there will be a New Moon, so the night sky will not be flooded with moon light. ... Normally this is a relatively weak meteor shower with the meteors hitting the EarthтАЩs atmosphere at 65 km/s. Finally we will see a Full Moon on 25 November. ...