Amanda Karakas One of the most important research fields in astrophysics is the study of the origin of the elements. ... Asymptotic Giant Blanch (AGB) Stars: For low and intermediate-mass stars (with initial masses between about 0.8 to 8 solar masses) the most important nucleosynthesis occurs when stars evolve off the main sequence to the giant branches. ... This indicates that these stars obtained their unusual abundances via mass transfer from a previous red giant star, that has long evolved away. ...

... The Utilization of Spatial Enhancement of Landsat Images in the Delineation of Structural Elements, Red Sea Hills, NE - Sudan . ... In contrast to spectral image enhancements, spatial filters emphasize or de-emphasize image data of various spatial frequencies. ... Wherein, most of the structural elements in the area are clear and esily descernible. Subtle enhancements on the structural lineaments in the area enabled the author to produce a structural map of the area under investigation. ...

... The collecting area is increased by nesting concentric mirror pairs, all having the same focal length. ... Figure shows the largest optical element being ground at HDOS. ... X-ray testing demonstrated that the CXO mirrors are indeed the largest high-resolution X-ray optics ever made; the nominal effective area (based on the ground calibrations) is shown as a function of energy in the left panel of Figure , along with those of their Einstein and ROSAT predecessors. ...

TH setINDI 1 .SH NAME setINDI \- set one or more writable INDI property values .SH SYNOPSIS \fBsetINDI [options] device.property.e1[;e2...]=v1[;v2...] ... \fP .SH DESCRIPTION .na .nh .PP setINDI connects to an indiserver and sends commands to set new values for specified properties. ... TP -p <p> connect using alternate port p; the default is 7624. ... SH EXIT STATUS The setINDI program exits with a status of 0 if it suceeded in setting the new value for each specified property. ...

Abstract -- Abundances of heavy elements decreases with increasing galactocentric distance almost in all disk galaxies. ... To explain this gradient in young objects and in the interstellar gas one has to assume that a typical disk galaxy is an open system, i.e. it expels some synthesized heavy elements into the circumgalactic space and/or accretes intergalactic gas with zero metallicity, with rates of both processes depending on the galactocentric distance. ...

... GALAXY: A galaxy is made up of billions or trillions of stars bound together by their own gravity. ... HELIUM (He): The second element in the periodic table, has 2 protons, 2 neutrons, and is a noble gas. ... Helium melts at -272.2 degrees Celsius, and boils at -268.934 degrees Celsius. ... HYDROGEN (H): The first element on the periodic table, is a gas, and has an atomic mass of 1.00794 amu. ... Hydrogen melts at -259.34 degrees Celsius, and freezes at -252.87 degrees Celsius. ...

... Space flight . ... Space Hotel . ... The program of deployment of small orbital station (SOS) consisting of a family of spacecrafts and module-spacecrafts represents a consecutive realization of flight scenarios with consecutive building up of functions. ... Scenario 1 - the regular and revised spacecrafts of class "Soyuz" - TMSC and MNMSC (MNMSC-cargo, MNMSC-MR) are used, pls. see fig fig.8 . ... The terms of transition to this scenario are determined by terms of readiness of one or another module....

MATSYM - symbolic matrix processor . ... To use the program you will need a MAT file (liked CIR file: "User manual for CIRSYM program") of your system. ... In first string of MAT file enter any text you want to be the title of your system. ... Starting from string 2 (if is not comments - "*") enter the system element name, incident row and column and, optionally, its value. ... To generate a solution, run MATSYM.exe and enter "system_file_name.CIR" or click on the "ENTER" (in "MAT" case). ...

Crystals of Siberia Solutions for laser systems CRYSTALS of SIBERIA Ltd. ... LBO crystal, SHG Dimensions: 8 mm(W) x 8 mm(H) x 25 mm(L) Cutting angle: Theta: 90 degrees Phi: 11.6 degrees Anti-reflection Coating: DBAR@1064+532 nm both sides Quantity: 1 element Price: $2070 per element Item 2. ...

... The engine operates with all three propellants (lox, kerosene, hydrogen) in the booster mode (mode 1) and transitions to bipropellant operation (lox, hydrogen) for the latter portion of the trajectory (mode 2). ... In mode 1 operation the hydrogen enhances the combustion of the kerosene to provide to tripropellant specific impulse levels higher than obtainable with separate combustion of the fuels. ... mode 1) . ... DASA, Munchen, February 1994, приведены следующие параметры двигателя РД-701 : . ...

Your First Telescope . Articles | ... Eyepieces . ... You don't really NEED more than 3 or 4 carefully chosen eyepieces, a barlow, and perhaps a filter or two, but most of us eventually wind up with collections, some of them quite impressive. Eyepieces: The first accessory a newcomer buys is usually a new eyepiece. ... The Kellner is a three element design that shows an acceptable 40-45 degree FOV, and good correction of spherical and chromatic aberration. ... www.astronomy.net . ...

. Diameter of circular antenna . 576 m . Number of antenna elements . 895 . Size of an element . 11.4 x 2 m . Geometrical area . 15000 m 2 . Effective area of full circle . 3500 m 2 . Wavelength range . 1 - 50 cm . Frequency range . 610 - 30000 MHz . Maximum angular resolution . 2 arcsec . Accuracy of coordinate determination . 1-10 arcsec . Flux density limit . 0.500 mJy . Absolute brightness temperature limit . 0.050 mK . Tracking time (South sector + Flat mirror) . 1-3 h . [RATAN-600 Homepage]

... For given geographical longitude and time zone show the current data and time, Universal data and time, current local star time. ... Accept 10 different data formats (data&time, data with decimal day of month, data with decimal day of year, decimal year, some Julian dates), calculate from any formate to others, show day of week. Current data and time direct insertion function is exists. ... Calculate angular distance between two points at the sky by its equatorial coordinates. ...

... l - the mean galactic longitude; . ... mul - the median proper motion along galactic longitude of the stars of the OB-association, in units of 0.001 arcsec year -1 ; . dml - the estimation of mul dispersion in the OB-association, in 0.001 arcsec year -1 ; . mub - the median proper motion along galactic latitude of the stars of the OB-association, in units of 0.001 arcsec year -1 ; . dmb - the estimation of mub dispersion in the OB-association, in 0.001 arcsec year -1 ; . ...

Общая Астрономическая Конференция > Форумы общей направленности > Любые вопросы от новичков > Шпионим за спутниками . ... Просмотр полной версии : Шпионим за спутниками . ... 08.07.2007, 22:56 . ... Зайдите на сайт www.stoff.pl (http://www.stoff.pl) Там можно на халяву скачать программу Orbitron (поддержывает множество языков). Потом заходим на сайт - www.celestrak.com/NORAD/elements/ (http://www.celestrak.com/NORAD/elements/) Оттуда берем текущие орбиты интересующих нас спутников - напр. ...

WDC-A Digital Exchange Format for One-Minute Geomagnetic Data (Update August 1993) 1. The logical record length is 400 coded characters containing header information, blank spaces, and data for one element for one hour. ... Each logical record contains header information and data in the following format: North polar distance, longitude, year, month, day, hour, element, observatory code, blank spaces, 60 data values, and an hourly mean. ... ORG is the origin of the data. A = Alaska Chain. ...

Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light Telescopes Class 2 Solar System Characteristics Formation Exosolar Planets Class 3 Stars The S un Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic ... Low mass stars live and die differently than high mass stars. ...

... The axial support is provided by 78 air pistons. ... The transverse support is provided by 38 air pistons, supported by cantilevers from the mirror cell, that act on the mirror local center of gravity surface. ... The locations where the transverse mirror support forces should be applied to the mirror are listed in Table 1 and illustrated in Figure 1. ... Figure 1: CAD drawing showing the 2.5-m primary mirror and the locations of the transverse support posts (black) and axial pneumatic pistons (blue...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... 2/3-m Telescope . ... Irvin M. Winer . ... Science . ... Tom Kaye, an amateur astronomer from the Chicago, Illinois area, installed his Tau Boo campaign equipment at our facility in mid-February, 2000. ... The custom unit fed the starlight to an optical fiber that transmits the light to a bench spectrograph located in the Winer machine shop. ... The daily results from mid-February, 2000 to early March, 2000 are shown on the left. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... At first glance, the asteroid 433 Eros might seem just like every other asteroid. ... But Eros was the first of what later became a sizable class of what we call ``Near Earth Asteroids'', or NEAs for short. ... At 10:33 a.m. Eastern US time, the Near Earth Asteroid Rendezvous, or NEAR, went into orbit around Eros. ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! ...