Professor in Astrophysics, Head of Group . ... Department address: . ... Battcock Centre for Experimental Astrophysics, . Cavendish Laboratory, . ... Cambridge CB3 0HE. Telephone: (+44) (0)1223 337477 . Fax: (+44) (0)1223 337563 . College address: . Jesus College, . ... Cambridge CB5 8BL. Telephone: (+44) (0)1223 339432 . ... Cavendish | Astrophysics Home ] . ...

... ATNF Colloquium . Elizabeth Alexander, the 'Norfolk Island Effect' and the Genesis of Solar Radio Astronomy in Australia . ... In this seminar I will review Elizabeth Alexander's investigation of the `Norfolk Island Effect' and explain how her work led to the pioneering solar radio astronomy investigations carried out by Joe Pawsey and his colleagues at the Collaroy, North Head and Dover Heights radar stations between October 1945 and March 1946. ... today * ATNF | ...

... Точность изготовления поверхности зеркала, т.е. максимально допустимые отклонения от заданной формы, зависит от длины волны света, на которой будет работать зеркало. ... К примеру, зеркало, работающее в видимом свете (длина волны = 0,5 микрона), должно быть изготовлено с точностью 0,06 мкм (0,00006 мм). ... В простейшем случае окуляр может состоять только из одной положительной линзы (в этом случае мы получим сильно искаженное хроматической аберрацией изображение). ... на astronom-ntl.narod.ru . ...

... Alexander Gusev, Sternberg Astronomical Institute . Andrei Tokovinin, National Optical Astronomy Observatory . ... Antonia M. Varela, Instituto de Astrofisica de Canarias . ... Behnam Javanmardi, Shiraz University-Biruni Observatory . Boris Safonov, Sternberg Astronomical Institute . ... Davoud Afshari, Zanjan University . ... Florian Kerber, European Southern Observatory . Gianluca Lombardi, European Southern Observatory . ... Hiroshi Matsuo, National Astronomical Observatory of Japan . ...

... We demonstrate through numerical simulations that model parameters estimated with our technique are essentially bias-free, even when the average number of counts per bin is 1. ... The IW technique avoids such biases by estimating through successive iterations, where for each iteration, j, , and the best-fit parameters are determined by minimization of . ... In our sample, we find that the minimum values and best-fit parameters converge after about 6 iterations. ...

. Statistics of sunspot activity . The sunspot indices . My observations . NGDC's observations . The solar regions . Links . About authors . Russian pages . About authors . Observer: Alexey Ryback . Web-design: Alexander Burkov .

XEphem Forum Message . Forums: . ... God and Science ћ SETI ћ Software ћ UFO ћ XEphem . ... Discussion Forums | XEphem Ephemeris Software Discussion | Post . ... Linux Motif RPM Installation . Forum List | ... Post Message | ... but is in the development RPM: . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Tonight's Sky . ... DISK т?? ... Star Atlas . ... solar system . ... stars . ... Some orbits more popular than others in solar systems . ... Computer simulations suggest high-energy radiation from baby Sun-like stars are likely to create gaps in young solar systems, leading to pile-ups of planets in certain orbits. ... The experiments revealed that just as observations of real solar systems have shown, giant planets migrate inward before they finally settle on a stable orbit around their star. ...

We hosted an interdisciplinary two-day workshop on Solar Astronomy and Statistical inference at the CfA on Feb 16-17, 2012. ... Format: On the first day of the workshop, we had two tutorial sessions, one describing solar data for statisticians and the other describing statistics methods for astronomers. ... Presentation slides and video recordings are available via SIP (see links in session schedule details below). ... Video [.mov] (@SIP) . ... Massive solar data streams -- Alisdair Davey (CfA) . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . Colin Johnston . ... Space Flight . Human Exploration . ... Science Fiction . ... I?m Colin Johnston, Armagh Planetarium?s Science Education Director. ... Colin Johnston Visiting Armagh Planetarium . Since 2006, I have edited Astronotes€а (firstly as a printed journal, then as a blog) which gives me the opportunity to write about astronomy, space exploration and related fields. ... Colin Johnston: Armagh Planetarium | ...

Proposal Identification No.: ... Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Director Discretionary Time Pulsars Galactic 10 Hours 45 minutes Searching for Pulsed Radio Emission from the Magnetar SGR 1935+2154 Magnetars are rare neutron stars with extremely high magnetic fields, which display X-/gamma-ray outbursts frequently but irregularly. ...

... разработка теории и методов расчета лучевых дифференциалов первого, второго и третьего порядков в градиентных оптических системах; . ... разработка методов расчета геометрических аберраций второго и третьего порядка осесимметричных оптических систем, содержащих асферические поверхности и градиентные среды типа "псевдоаксикон"; . ... получены формулы для расчета смещения изображения и геометрических аберраций второго порядка в градиентных оптических системах с малыми нарушениями осевой симметрии; . ...