... There are two kinds of people: Those who enjoy the ebb and flow of the seasons, the dapples of autumnal color, the hoary headed frosts of winter, the flowers anew of spring, the live murmur of a summer's day. ... Geometry of the Seasons . ... In the Northern Hemisphere, the coldest temperatures generally occur in January and February, and the hottest in July and August. ... During winter in the Northern Hemisphere, it's summer in the Southern Hemisphere, and vice-versa (see figure 1 ). ...

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... The observing season of Jupiter's Galilean satellites (Io, Europa, Ganymede and Callisto) occultations start in Ireland on the 24th of July and end on the 11th of November. The occultations are seen from Earth only once every six years. ... Continue reading and get prepared. ... Sunday, 5 July 2009 14:37 . ... International Year of Astronomy, Ireland National Node . ...

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... Tonight's Sky . ... Observing . ... Subscriber Extras . Sky this Month . ... Web Extras . ... Observing Podcasts . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Observing Basics . ... Web Extra: Titanт??s seasons slowly change . ... Get instant access to subscriber content on Astronomy.com! ... BONUS web extras not included in the magazine . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

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... 2015 - 2016 . ... Eugene Higgins Professor of Astrophysics, Princeton University . ... December 8, 2015 . ... November 10, 2015 . ... University of the Sciences in Philadelphia author . ... Amateur Astronomer . ... 2014 - 2015 . ... June 9, 2015 . ... Digital Planetarium and the 2012 Transit of Venus from Hawaii . 2013 - 2014 . ... International Occultation Timing Association . ... 2012 - 2013 . ... 2011 - 2012 . ... Princeton University . ... Amateur Astronomers Association of Princeton, Inc., ...

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. Previous slide . Next slide . Back to first slide . View graphic version .

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Next: Discussion Up: Other Stars Previous: Stars with Less . While periods were detected on 59 of 105 stars monitored only 12, ten in Orion OB1a and OB1b plus TAP 26 and P1724, had detections with FAP's below 1%. This seems consistent with results from the Van Vleck Observatory. ... The Van Vleck Observatory has reported periods for 75 stars (Choi & Herbst 1996) and variability has been seen in 186 stars (Attridge & Herbst 1992) over four years. ... Thu Dec 5 13:29:36 EST 1996 ...

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... 2009 Eclipse - Bruce Berger . ... Bruce Berger . ... Astro-Images . ... Astro-Images from Wingaersheek Observatory, 32 inch relay telescope, Mario Motta, vol 1 . ... Mario Motta M.D. Astro-images from Wingaersheek Observatory, 32 inch relay telescope, Mario Motta, Vol 4 . ... Mario Motta M.D. Astro-Images from Wingaersheek Observatory, 32 inch relay telescope, Mario Motta, vol 5 . ... Mario Motta M.D. Astro-Images?2 . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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. 26th of December 2014 . Merry Christmas and Seasons Greetings . We are in the process of creating a daily astronomy image server to which all ATNF users are invited to contribute. This will take a little while, so in the meantime have a lovely Christmas and happy holidays. | archive | about | today * ATNF | Parkes | ATCA | Mopra | VLBI | ASKAP | .

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Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Site . Weather . Roof Status . ... Average Max. ... 0.0 . ... In 2004, the roof was operated manually, while in 2005 through 2007, it was operated automatically by computer, but was not closed by weather sensors. ... The "Closed" column includes those nights outside the Monsoon season when the Observatory was closed due to weather (the usual cause), equipment failures, or vacation by the Winer staff in 2004 through 2006. ...

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Глава 3. ... Глубинная дифференциация вещества . В предыдущей главе мы выяснили, что все небесные тела Солнечной системы не являются неизменными на протяжении миллиардов лет, как полагают многие астрономы и небесные механики. ... Итак, первым рабочим веществом в планетной геологической эволюции, по нашему предположению, является углекислота, которая вследствие этого играет в развитии небесных тел великую роль в процессе глубинной дифференциации вещества. ... Происхождение материков и океанов . ...

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... The then president of the Society, Mr. Robert Burke, appointed a committee of eight or ten members, most of whom had made smaller mirrors, as an instrument committee, with Mr. Thorpe as chairman. ... Seriously, the best practicable solution seemed to be to build a machine to do the grinding and polishing. ... It was decided to grind the edges of the mirror to make it truly circular, as the rough cast glass was some 3/8 inch longer on one diameter than on the other. ...

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... WFIRST . ... Missions . ... Science . ... The design reference mission described in the Final Report of the WFIRST-AFTA Science Definition Team has two instruments to execute the mission science program : . ... The WFI will have 6 imaging filters, a grism (for redshift measurements in support of BAO science), and an Integral Field Unit (IFU) for spectroscopic characterization of supernovae. ... A three-tiered WFI supernova survey, with both imaging and IFU spectroscopy, taking a total of 0.6 years. ...

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... Home Education Classes AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 2015 . ... AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 2015 . AAA Winter Astronomy Class: Measuring Distances in Space тАУ Dec 2015 тАУ Feb 2016 . AAA Spring Astronomy Class: The Physics of Astronomy тАУ February - March 2016 . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ...

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The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . Tele Vue is a seasoned manufacturer of Nagler eyepieces. ... Listed Since July 15, 1998 . ... Web Site . ... Web . www.astronomy.net . About 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 ...

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... Subject of Astronomy. ... Basis of Spherical and Practical Astronomy. ... Celestial Sphere. ... Changes of Star's Coordinates as a Result of Daily Rotation of Celestial Sphere. ... Time Measuring. ... Changes of Solar Equatorial Coordinates. ... Stellar Day, Stellar Time. ... Real Solar Time. ... Mean Solar Time. ... Connections between Stellar and Mean Time. ... Apparent Path and Configuration of Planets. ... Ways of Energy Transportation to Stellar Surface.Basis of Spectral Analysis. ... Solar...

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... Contacting and discussing with people sharing your interests, participating in night sky observations with telescopes as well as a large choice of astronomical books, magazines and video-tapes out of our club library. ... A reasonable compromise for observing both planets and brightest deep sky objects ( nebulae, galaxies) are either a 4 to 8 inch mirror telescope ( Newton, Schmidt-Cassegrain ) or a 3 to 4 inch refracting ( lens) telescope. ... Where can I buy a telescope in Luxembourg ? ...

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... Barbara Hubal . ... Tom Whiting . Hidden Hollow 2008 . ... May 2 - 4, 2008 . ... The Hidden Hollow weekend Star Party at Warren Rupp Observatory will be back again this year the weekend of May 2nd - 4th! ... This year we are pleased to welcome back Tom Whiting again to Hidden Hollow and to have him speak. ... Tom will be doing a presentation again this year on how to get the most out of your observing and quick, efficient ways of finding what you're looking for. ... BDH/TJP 12-Feb-2008 ...

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