... Almost all DSOs require a telescope to see in any detail at all, though some can be detected with just binoculars, and a few can be barely seen with the unaided eye. ... DEGREE: Distances on the sky (sometimes called the celestial sphere) are measured in angular degrees rather than inches or feet. ... The magnification is the focal length of the telescope divided by the focal length of the eyepiece. ... Short focal length eyepieces are also termed high power, long focal length are low power. ...

... Институт прикладной математики им. М.В.Келдыша . БАЛЛИСТИЧЕСКИЙ ЦЕНТР . ... В 1965 году для координации этих работ на базе отдела был организован Баллистический Центр института , руководителем которого был назначен Аким. ... Баллистический центр Института прикладной математики (ИПМ) был создан по инициативе М.В. Келдыша и С.П. Королева для баллистико-навигационного обеспечения космической программы, в особенности пилотируемых полетов и полетов автоматических аппаратов к Луне и планетам. ...

... Observatory . ... THE HISTORY OF AAAP . ... After introductory remarks by Robert Sanders, founder of the Association, it was moved that the name of the organization be Amateur Astronomers Association of Princeton. ... 2/72 First issue of Sidereal Times, so named by Editor Roxanne Tobin. ... 5/72 Election of officers: Norman Sperling, Director; John Church, Assist. ... Sidereal Times, John gives the following report: . ... Sidereal Times.) ... Amateur Astronomers Association of Princeton Т? 2015. ...

... The VSM: Lunokhod-2 25-year anniversary . Luna-21 with Lunokhod-2 landed on Moon 16 January 1973. ... All photos here except full Moon and Mare Serenitatis were made by author in NPO Lavochkina museum. ... which is very similar to Lunokhod-2, except its cameras. Luna-21 landed 15 Jan at 23:35 GMT inside 55-km Le Monnier crater on the eastern edge of Mare Serenitatis. ... Frame - Mare Serenitatis . ... Any wheel could be permanently disconnected from its motor if the motor gets stuck. ...

Sternberg astronomical institute activities on site testing programs review Victor Kornilov comprehensive/characterization/of/astronomical/sites > kislovodsk/russia/2010/october/4-9 > Introduction This presentation responds on our activity in 5 last years only, inspite of that in SAI site testing researches have been started many years ago. ... More detailed discussion is devoted to MASS and DIMM measurements processing, some additional effects which were taken in account in last year. ...

... The VSOP Survey Continuum Source List . The radio sample for the VSOP continuum survey was defined to include all extragalactic radio sources with: . a total flux density at 5 GHz, S>=1.0 Jy . ... The sample also included all sources in the sky with a 5 GHz flux density S>5 Jy, regardless of spectral index and galactic latitude. ... The source would then be included in the VSOP sample (three of the sources were found with a flux density above 1 Jy and added to the sample). ...