... The spectrum of the brightest star, our Sun, shows several dark gaps perpendicular to the flow of it’s colours (figure 1). These so called spectral absorption lines where discovered in 1802 by the English scientist William Wollaston. ... Some stars as Pollux show a spectrum similar to that of our sun with strong Ca II and Fe II lines, others as Sirius or Vega show strong absorption lines of hydrogen, others, as Mira show very complicated spectra due to molecular absorption lines (see figure 5). ...

Super Rocket Targets . NPO MOLNIYA has been designing rockets-targets for over 30 years using the great experience in crea-ting anti-aircraft guided rockets (AGR) for C-25M. On the basis of B-300 anti-aircraft rockets which expired their service life, there were designed, tested and put into the serial production the following types of the rocket - ... The analogue of this system successfully passed the state tests with the ZVEZDA-4 rocket-target. ...

IDL . Python IDL download calc_kcor.pro . K-corrections calculator in IDL. ... Python download calc_kcor.py . ... Available filter-colour combinations must be present in the ` coeff ` dictionary keys. @type filter_name: string @param filter_name: Name of the filter to calculate K-correction for, e.g. 'u', 'g', 'r' for some of the SDSS filters, or 'J2', 'H2', 'Ks2' for 2MASS filters (must be present in ` coeff ` dictionary) @type redshift : float @param redshift : ... Get the code . ...

... Астрософт (Модератор: tlgleonid ) > . Celestia или как там ее . ... Right drag: orbit the selected object . ... Ctrl + Left drag: adjust distance to selection . Shift + Left drag: change field of view (e.g. => telescopic view) . Wheel (middle button) click: toggle field of view between 45 degrees . ... Chase selected object (orientation is based on selection's velocity) . T : Track selected object (keep selected object centered in view) . ... Ctrl+P : Mark selected object . ...

... Home Articles Choosing and Using Binoculars . ... Beyond New York City . ... Choosing and Using Binoculars . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... For instance, if you observe with a 7 x 50 pair of binoculars under a city sky, this is like observing with a pair of 7 x 35 binoculars. ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Научная панорама ? astro-ph/0703317 Тройное кольцо вокруг SN 1987A: отпечаток слияния двойной . ... astro-ph/0703317 Тройное кольцо вокруг SN 1987A: отпечаток слияния двойной (The Triple-Ring Nebula around SN1987A: Fingerprint of a binary merger) . ... Тут почему-то не аккреция, а слияние. ...

This section of library contains information about "classic" Star Catalogs. ... For a Henry Draper Catalog 272149 stars have received a total of 531,211 identifications in 7 сatalogs: . 270456 - in Astrographic Catalogue ( "Carte du Ciel", 4M), . 251943 - in Guide Stars Catalog (GSC), . ... A file with information on the components of 1788 of multiple systems in catalog HDEC (3681 component, or a combination thereof, with 4054 recording). ... A file with information about 21971 variable stars. ...

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