... Роман Евгеньевич Ильинский email : ilinsky_r@mail.ru . ... Ильинский Р. Е., Ровенская Т. С. Дифференциалы луча в оптической системе // Вестник МГТУ. ... 1998.- ... Roman Ilinsky , Gradient-index meniscus lens free of spherical aberration, Journal of Optics A: Pure and Applied Optics, volume2, number 5, pages 449-451, year 2000 . ... Ильинский Р. Е. Определение реальных габаритов пучков в градиентных оптических системах // Прикладная оптика -2000: Тез. докл. ... 2000.- ... ROMAN ILINSKY . ...

... It is notoriously difficult to identify weak cosmic ray events in long exposure observations. ... The method is to compare the probability distribution function (PDF) of cosmic ray events between an observation and a dark frame matched in exposure time. We illustrate the basic idea using dark exposures from a Tek 1024 1024 CCD with varying exposure lengths and read-out times. ... Figure: Histogram of cosmic ray events in a two hour dark frame. ... Original PostScript figure (78 kB) . ...

... Tonight's Sky . ... Observing . ... stars . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Super-sized galaxy . New observations made with the Gemini South telescope show spiral galaxy NGC 300 is considerably larger than previous estimates. ... The Gemini astronomers hoped their star-counting technique would provide a more accurate view than previous studies of NGC 300. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

home resources > links . SEARCH ASP SITE: Match ALL words Match ANY word . ... NGC Table of Contents . ... Non-NGC Images . The ASP would like to thank Al Stern for his hard work in the re-establishment of these lists of astronomical images. ... Appendix: Great Non-NGC Images . ... Sources of Images . ... Sources of Image data information . Home of oposite image data information for the Hubble Space Telescope images . Home of aao image data information for AAT, UKS images . ... home | ...

Bishop School and the . Everyday Classroom Tools . Project . This year, nine of the Bishop teachers volunteered to be a part of the Spirit of Inquiry curriculum designed by the Smithsonian Astrophysical Observatory's Everyday Classroom Tools project. Participating teachers are from all grades represented at Bishop school. Linda Cohn -- ACE Resource Teacher . ... Article in the January 5th edition of the Boston Globe about Bishop School and the Everyday Classroom Tools Project . ...

... Stars . ... By admin August 13, 2013 Posted in: Stars . This is a Digitized Sky Survey image of HD 140283, the oldest star with a well-determined age in our galaxy. ... However astronomers are refining their models of exactly how stars work all the time.Тљ The estimated age of 16 billion years had an uncertainty of two billion years from the inaccuracy of its measured distance alone, if any of the predicted details of the star?s interior processes were off this uncertainty could be larger still. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit†йs . ... les plus belles images de l'Univers d†йcrypt†йes pour vous . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Kaguya sur la Lune : la photo de l'impact . ... La sonde japonaise Kaguya, en orbite lunaire depuis 2007, s'est †йcras†йe sur la Lune le 10 juin, aux environs de 20h25 (heure fran†зaise...