... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . The distance of the Sun from Earth is the basic unit of all astronomical distances. ... The 18th century transits of Venus allowed a proper geometrical determination of this unit to be made for the first time. ... One of the most famous of these problems is the black drop effect. ... They calculated the mean distance to the Sun to be 95 million miles whereas the currently accepted value is close to 93 million miles. ...

... Observing . ... Home Gallery Observing Events . ... AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 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 . ... The AAA will host public events in and around New York City to observe astronomical phenomena. ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Donate to Support Science Literacy . ... 2016 Annual Awards . The ASP is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach. ... Shop the AstroShop . ... The Astronomical Society of the Pacific (ASP) is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach.. ...

... Use of This Manual . ... Spectral-Line Observing at Arecibo (3.25 Mbyte) + Spectral line Appendices (0.56 Mbyte) ( HTML page ) . ... Data Analysis . ... Continuum Observing at Arecibo (0.36 Mbyte) + Continuum Appendices (0.31 Mbyte) . ... Pulsar Observations at Arecibo (4.03 Mbyte) + Pulsar Appendices (0.70 Mbyte) ( HTML page ) . ... VLBI Observing at Arecibo (0.36 Mbyte) + VLBI Appendices (0.35 Mbyte) . ... Introduction to Computing at Arecibo (0.33 Mbyte) + Computing Appendices (0.32 Mbyte) . ...

... HST . ... Hubble Heritage Project . ... HST Peer Review Process . Hubble Fellowships . ... HST Overview . ... Cycle 24 Announcement . ... Proposal ID = 12537 Principle Investigator = David Ehrenreich - Universite de Grenoble I Title = "Venus observed as an extrasolar planet" Time = Jun 5, 2012 15:28:10 - Jun 6, 11:34:00 Targets = MOON-HIPPARCHUS-C Instrument = ACS/WFC, STIS/CCD, WFC3/UVIS . ... Astronomers are beginning to address this question using transits (eclipses) of extrasolar planets. ...

... Science Users Information > Observing Facilities > La Silla Facilities > La Silla Science Operations . ... La Silla News . ... Internal Pages . La Silla Science Operations Department (LSO) is part of the La Silla Paranal Observatory and is in charge of the operations of the telescopes on La Silla. ... In the La Silla Science Operation pages, you should find all the information you need for your observations from the time you have an idea of observations until when you finish processing your data. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Astrophysics graduate student programs . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... The Astronomical Society of Australia (ASA) was formed in 1966 as the organisation of professional astronomers in Australia. ...

SAI 175 anniversary . ... Moscow University . Search for in SAI Moscow University Search for in Russian astronomical resources . ... SAI Astronomical Databases . ... Browse SAI Software archive(ftp.sai.msu.su) . ASTRONET.RU - Russian Astronomical Network (available in translit also) . ... SAI Supernovae Research Group . ... Department of the Galaxy and Variable Stars (in Russian) . Sternberg Ast