... Meade Series 4000 Nebular Filters incorporate the very latest in interference coatings technology. ... Technical Basis of the Meade Broadband Nebular Filter: As shown in the transmission graph below, the Meade Broadband Nebular Filter strongly rejects the light of sodium- and mercury-vapor lights as well as natural airglow and auroral emissions. ... Meade Series 4000 Narrowband Nebular Filters . ... Meade Series 4000 Oxygen-III Nebular Filters . ... Meade Series 4000 Photo-Visual Color Filters . ...

Anastasiia O. Kolokolova Center of International Education Department of the Ukrainian and Russian as the Second Languages V.N.Karazin Kharkiv National University Teaching course "Russian for Foreigners (Introductory, Basic)" Themes week AN INTRODUCTORY LEXICAL AND GRAMMATICAL COURSE -- 3 weeks Theme 1. ... Theme 2. ... Grammar: The Genitive case (sentences of negation; the Genitive with numerals; the Genitive denoting possessions; the Genitive denoting date, time; the Genitive with prepositions). ...

. To see a Russian version of this page click here . (Senior Researcher. Graduated from Moscow State University (MSU) in 1982, Ph.D. 1986, MSU) . A member of EAS and IAU. Fields of interest: hot massive stars, close binary systems: optical photometric and spectral observations, X-ray observations; ill-posed problems, X-ray astrophysics. My publications (ADS link) . Linux on CLEVO 8750 (old stuff) . Phones/addresses of my university mates graduated in 1982. E-mail: igor@sai.msu.ru .

... This site is devoted to Russian cosmonautics, its principle is "it's better to see once, than to hear 100 times". Here you will find photos (including rare ones), schemes, and the most important - 3D models of spacecraft and launch pads. webmaster - Alexander Chernov, chernov@vsm.host.ru . ... 1997 . ...

... In spite of the good potential possibilities, some of the station "Dnepr" design characteristics did not allow us to apply the usual special IS radar measurement methods. ... Thus for IS signal measurements at the "Dnepr" station, we have developed special methods for recording and processing IS signals in order to determine plasma ionospheric parameters. ... Equations (4-5) from the basis for data post processing to obtain ionosphere parameters. ...

Eyepieces Forum Message . ... Eyepieces ћ Meade ћ Misc. ... Eyepieces | Post . ... Well, . ... Post Message | ... Posted by Bob Sal on September 9, 2003 21:22:51 UTC . ... I have a 12"LX200 f/10 scope and with the 14MM eyepiece I get 218X. Most nights that's about the most magnification I can use and still have an acceptable focus. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Structure of Data . ... Catalog . ... In SAI OCL Catalog, we introduce our work on investigation of the Milky Way system of open star clusters. The main goal of our study is a search for new clusters using huge surveys. 168 new clusters have been already discovered by us using J,H,Ks data from 2MASS point source catalog. ... For 141 new clusters, we found their physical parameters using J,H,Ks data from 2MASS catalog and, for a number of clusters, our UBVRI CCD observational magnitudes. ...

... 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). ...

... Without further ado, let me introduce you to the wonderful stylings of Mike Allen.. Under A Dog Day (Night) Sky" . ... Black Forest Star Party" . ... But sometimes a hazy summer night can ruin any motivation for observing. ... Hazy skies usually mean steady skies, and steady air is just what the doctor ordered for observing planets and double stars. ... It has an easily observed 10.6 magnitude central star. ... I next held them to my eyes and checked the field and collimation. ... Mike Allen . ...

Catalogue of eclipsing variables (CEV) is the world's principal database of eclipsing binary systems with available classification. CEV contains identifications, classifications, photometry, periods, eclipses data, spectral types, references and notes for 7179 systems. Format of the current CEV . CEV main table (~1.0MB) . ... List of systems, erroneously classified as eclipsing binaries in GCVS (they are not included in the CEV main table) Download all files as a single archive (~0.6MB) . ...

.

MICROSCOPES . ... In the last three to five years, LOMO has developed new lines of products, including new families of biological, fluorescent, and polarizing microscopes, night vision devices, consumer Maksutov telescopes, etc. ... 1939 Company introduces its first student and biological microscopes. as well as its first manual movie camera . ... 1956 LOMO produces its first wide-screen-format movie projector and introduces its first fluorescent microscope for chemical structure analysis. ...

... A rough estimation is that in the United States there is one planetarium per 100,000 population, ranging in size from the Hayden Planetarium's 20-meter dome seating 430 people, to three-meter inflatable portable domes where children sit on the floor. ... Together dblo associates make a huge impact in the architecture, interior design and development arena in London. ... With the holidays around the corner what better way to spoil your family than with your very own private home cinema. ...