... Three energetic mechanisms are considered: multiple supernova explosions (SNe), a hypernova explosion associated with a gamma ray burst (GRB), and the vertical impact of a high velocity cloud (HVC). ... As a consequence, multiple SNe form rings with a high ring-to-center contrast K < 100 in the HI column density, whereas single hypernova explosions form rings with K < 10. ... Our simulations show (see Fig. 6) that both multiple SNe and single hypernovae may form rings of up to 2 kpc in diameter. ...

... The author attempts to approach the problem from the positions of systems analysis with account for the ideological grounds and history of space activities in Russia and abroad, comparing its current interpretation with the initial goals posed by leading theoreticians and practitioners who stood at the cradle of the space exploration era. ... The space systems recognized in Russia as priority projects are largely developed with violations of the systems approach principles. ...

... Dnepr launch record 17 August 2011. ... Baikonur Cosmodrome Yasny launch base Downloads . ... Yasny launch base is located in Orenburg Region, Russia. ... Admin & Hotel Complex including hotels, dining facilities and office premises; . Assembly, Integration and Test Building (AITB) incorporating clean room facilities and fueling station; . ... Yasny launch base AITB is divided into four main areas: Clean room 1 (CR1), Clean room 2 (CR2), Fueling Station and Offloading & Storage Area. ...

... На форуме начался конкурс - Астрофотография месяца: АПРЕЛЬ! ... Астрофотография (Модераторы: Павел Бахтинов , Ivan Mhitarov ) ? Луна и планеты - вебки возвращаются? . ... Рейтинг: +368/-1 . ... По наводке Паши Преснякова нашел статью о разборке новой вебки от Майкрософта. ... Стоит в пределах 3200руб, наличие у продавцов с price.ru не проверял... http://www.ghonis2.ho8.com/lifecam/lifecam1.html . ... Записан . ... Рейтинг: +73/-4 . ... Ответ #1 : 18.11.2009 [15:22:08] ? ... Рейтинг: +565/-49 . ...

... LINKS . ... Founded in 1971 by a group of enthusiasts and star aficionados, our association is now counting more than 130 members.As a national association we attract hobby astronomers from the whole country to our regular night-sky observations and to the meetings in our club at Dudelange. ... Club News . ... by topic : PDF File Download (360KB) . by title : PDF File Download (640KB) . ... Article about AAL in "Le Quotidien" newspaper of Juli 21 2005 - PDF File Download (132KB) . ... SOME LINKS . ...

... 73P/Швассмана-Вахмана 3 . Комета 73P/Швассмана-Вахмана 3 . ... Комета 73P/Швассмана-Вахмана 3 и туманность М57 . ... Телескоп Хаббл и 73P/Швассмана-Вахмана 3 . Комета 73P/Швассмана-Вахмана 3 и М13 . ... Фрагмент С кометы 73P/Швассмана-Вахмана 3 . ... Фрагмент С Кометы 73P/Швассмана-Вахмана 3 . ... Комета McNaught - самая яркая комета 21 века . 12 января 2007 Комета McNaught - самая яркая комета . Комета McNaught - самая яркая комета южного полушария 21 века . ...

General Information . ... The conference is organized by the Sternberg Astronomical Institute (SAI) of Moscow University and the IAU Working group "Site-testing Instruments" . ... Use of site data in telescope operation and adaptive optics. ... Recent conferences on this subject (2007, 2008) demonstrated great interest of the community, hence the need for a new meeting. ... Unlike previous recent conferences, this meeting will cover all aspects of site monitoring for optical/IR astronomy. ...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...