... OXIDIZED AND HYDRATED SILICATES ON M- AND S- ASTEROIDS: SPECTRAL INDICATIONS. ... In particular, it was shown that a considerable fraction (ab. 35%) of the mainbelt M-type asteroids have absorption bands at 3 µm [3, 6] diagnostic of water of hydration. At the same time it was found that the visible-range reflectance spectra of some M- and Sasteroids include absorption features characterizing presence of oxidized silicates [4, 5]. ... The reflectance spectra of 161 Athor (Fig. 1), 497 Iva (Fig. ...

... Ballistics, navigation and flight control of the spacecraft, going to the L2 point of Sun-Earth system. ... and calculation algorithms have been developed: - an algorithm, building nominal trajectories for one impulse flights to the L2 point of Sun- Earth system, including a Moon swingby maneuver or not. - an algorithm, calculating corrections of spacecraft trajectory needed for the flight from Earth to halo orbit and for stationkeeping of the spacecraft moving in halo ...

... LEFT?, expression, RIGHT?, %math? . where expression is %math or %math tag %math, see below. The BOX element is used for a variety of purposes: . ... The BOX element can be used with the LEFT and RIGHT tags for delimiters that stretch to match the size of the enclosed expression. ... Left delimiters should be given before the LEFT tag, while right delimiters should be given following the RIGHT tag, for instance: ( 1 + x ) f(x) = {(<left> f(x) = ( ----- ) 1+x<over> sin x ( sin x ) <right>)} . ...

... Meade Instruments Corporation . ... How to Calculate Power . How to Calculate Power: The magnification, or power, at which a telescope is operating is a function of the focal length of the telescope's main (objective) lens (or primary mirror) and the focal length of the eyepiece employed. ... Example: The Meade DS-2070AT telescope has an objective lens focal length of 700mm; when this telescope is used with a 25mm eyepiece, a power of 700/25 = 28 power (written as "28x") results. ... about meade | ...

... Galaxies with polar rings (PRGs) are a unique class of extragalactic objects, consisting of a ring or disk of gas, stars and dust orbiting in a plane nearly perpendicular to the disk of a central galaxy. ... At present, there are only about two dozen kinematically confirmed galaxies in this PRG class, mostly from the Whitmore et al. (1990) catalogue, based on photographic images. ... Examples of object from our catalogue SPRC (=SDSS-based Polar Ring Catalogue). ...

Blackholes Forum Message . ... So How Can We Calculate The Mass Of The BH? ... Posted by Lukas on January 25, 2005 14:00:31 UTC . ... Gravity is the weakest force of all - secretary - January 25, 2005 - 18:53 UTC . Singularity - bazukaz - January 25, 2005 - 23:19 UTC . Only in theory - secretary - January 26, 2005 - 02:15 UTC . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Its apparent diameter of 18.0 arc minutes corresponds to a linear extension of about 180 light years; Kenneth Glyn Jones mentions an estimate of even 20 arc minutes from deep photographic plates, corresponding to about 200 light years linear diameter. It appears somewhat smaller in amateur instruments, perhaps about 10 minutes of arc. ... Red: 20x3 minute subs, totaling 1 hour . Green: 20x3 minute subs, totaling 1 hour . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... public class EDM . ... Euclidean Distance Map: The value of each pixel is the distance to the nearest background pixel (for background pixels, the EDM is 0) - Ultimate Eroded Points (UEPs) are maxima of the EDM. ... static int . ... Unit in old make16bitEDM: this pixel value corresponds to a distance of one pixel. static int . ... int . ... For compatibility with previous versions of ImageJ only. public FloatProcessor makeFloatEDM ( ImageProcessor ip, int backgroundValue, boolean edgesAreBackground)...

... Research objects and scientific purposes . Space scientific program includes development and launch of two supersmall spacecrafts "Universitetskiy" and "Kompas-2" intended for monitoring of radiation conditions near the Earth. ... All the studies conducted in the near-Earth space are characterised by strong radiation fields. ... The circular polar orbits, which cover all the near-Earth space, are the most favorable for comprehensive studies of the radiation conditions near the Earth. ...

Astronomy Picture of the Day . ... 28.07.2007 . ... Credit: Frank Barrett Explanation: The brilliant full Moon might not look quite like this to skygazers next Monday, but the image is a mosaic of 18 digital frames recorded when the Moon was only about seven hours past its exact full phase or time of maximum illumination as viewed from Earth. ... July . ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: full moon . Publications with words: full moon . ...

The Race to the Planets Leader Kit is the second release in our series of family events and activities on topics in astronomy for Family ASTRO Event Leaders . It allows you to take your Astronomy Event participants on a hands-on tour of the Solar System. ... Follow one or more of the links below for more information on the "planet tour" you want to take ( note that Frequently Asked Questions about Race to the Planets can also be found by clicking on these links ): . ... Race to the Planets . ...

KOLIBRY KONSTRUKTOR EDUCATION-SA EDUCATION WINOGRAD CHONDRO VIDEO-2 APIS THEBAS ARISS-2 VIDEO-3 ARISS-3 SEEDS GRAPHABOX BUGENERGY BOP ESD ARISS-4 CHROPHYL MATI-75 TOP PICTURE ARISS-TV MAI-75 FIZIKA-OBRAZOVANIE . ... Complex of amateur radio communications package consisting of: . ... Different video information received during photo and video recording per scenario plans of experiment MAI-75 and other recordings made onboard the ISS RS, earlier recorded and in real time as well. ... VIDEO | ...

Рэймонд Дэвис в ИЯИ РАН. Беседа с руководителем эксперимента по измерению . массы нейтрино, член-корреспондентом РАН Владимиром Лобашевым . Дальше . Ray Davis in INR RAS. With Vladimir Lobashev, the Head of . Troitsk Neutrino Mass Experiment, corresponding member of RAS . фото: Сергей Феклюнин . На ФотоЭксперимент

... Russian Academy of Sciences, . Sibirian Department, Yakutsk Scientific Center . Directors: Germogen F. Krymsky, Director, corresponding member of Russian Academy of Sciences . Evgeny G. Berezhko, Deputy Director . ... The main scientific directions are physics and astrophysics of cosmic rays, physics of solar-terrestrial interactions, investigations of interplanetary and near-the-Earth space, physical processes in magnetosphere and ionosfhere of the Earth. ...

... Radio astronomical tests of the engineering model of the space radio telescope (SRT) were completed in Pushchino - see Results . ... Monitoring of the development of the upgrade on-board 1.35-cm receiver (R-SRT-1.35 cm): . ... EM Engineering Model . ... OHCFS-SRT Space Radio Telescope On-board Heterodyne and Clock Frequency Synthesizer set . OHFS-SRT Space Radio Telescope On-board Hydrogen Frequency Standard . ORFS-SRT Space Radio Telescope On-board Rubidium Frequency Standard . ...

... Heracles Triplane and Aerospace Systems . The key characteristics of two-stage aerospace systems are determined according to speed and carrying capacity of the aircraft-carrier used . ... So the SPIRAL system hypersonic carrier was expected to launch the second stage by weight 63 tons at a speed corresponding to 6M; whereas launching weight of the MAKS system orbital stage with the use of the An-225 MRIYA heavy subsonic aircraft reaches 275 tons, and the HERACLES aircraft - 450 tons. ...

Atlas of the Arcturus MgH line's families spectrum* O. M. Ivanyuk, Ya. V. Pavlenko Atlas consists on three parts: The first part ­ is a spectrum atlas in range from 4925е till 5225е that covers MgH A -X 0-0 , MgH A-X 1-1 and MgH A-X 2-2 line's families The second part of atlas shows range from 5375е till 5625е in accordance with MgH A-X 0-1 and MgH A-X 1-2 families And the third ...

A year is a time interval approximately equal to the period of the Earth's rotation around the Sun. ... 2) a tropical year is a time interval between the Sun's two centre successive passing through the medium point of the vernal equinox (365,2422 days); . 3) anomalistic year is a time interval between the Sun's two centre successive passing through the perihelion of its visible heliocentric orbit (365,2596 days); . ... 6) lunar year includes 12 lunar synodic months (about 354, 367 days); . ...

... The storm began quite unexpectedly. The strongest geomagnetic storm for the last seven months began on Earth almost precisely at the same time as the solar eclipse reached its maximal stage, the culmination of which occurred at GMT 02:35 (06:35 Moscow time). ... Oscillations of such amplitude in the magnetic field have not been observed since October, 11th of last year, which is more than seven months ago. ... We can only add that the magnetic storm lasted approximately 9 hours. ...

... President of V.љN.љKarazin Kharkiv National University . Doctor of Sciences (Sociology), Full Professor, Academician of the National Academy of Sciences of Ukraine, Corresponding Member of the Academy Pedagogical Sciences of Ukraine . ... Kharkiv Institute of Radio Electronics (1972-1982), V.N. Karazin Kharkiv National University (since 1982). ... The President of V.N. Karazin Kharkiv National University (since 1998). ... Copyright 2010 V.љN. Karazin Kharkiv National University. ...