... December 14, 1999 . High Velocity Clouds and the Milky Way . ... Explanation: Where are these gas clouds going so quickly? High velocity clouds (HVCs) of gas have been seen for decades but their origins and destinations have remained mysterious. Recent measurements have now placed at least one of these clouds in the halo of our Milky Way Galaxy , while other measurements have determined the relative abundance of cloud elements. ... About APOD > . ...

... Michael E. Lopez-Alegria (Captain, USN, RET.) ... After his second mission, he led the International Space Station (ISS) Operations branch of the Astronaut Office. ... In October 2014 Lopez-Alegria became an independent consultant; he is based in Washington, D.C. SPACE FLIGHT EXPERIENCE: Mission Specialist (MS)-2, STS-73 Columbia (October 20 to November 5, 1995). ... The primary mission objective was delivery of the Expedition 6 crew to the ISS and the return of the Expedition 5 crew to Earth. ...

... It may be added, subtracted, divided or multiplied in any way appropriate for ordinary numbers. A mathematical relationship involving known numbers (like 25 or 40) and unknown ones (like x ) is known as an equation . ... To get a solution, one must replace the given equation (or equations) with others, containing the same information but cleaner in appearance. ... If you have an equation and modify both its sides in exactly the same way , what you get is also a valid equation. ...

Stellarium 0.12.3 . ... Classes . ... FileљStructure . ... Protected Member Functions | ... Protected Attributes . MultiLevelJsonBase Class Reference abstract . ... More... #include < MultiLevelJsonBase.hpp > . ... voidљ . initFromUrl (const QString &url) . ... boolљ . ... Definition at line 34 of file MultiLevelJsonBase.hpp . ... Load the element information from a JSON file. virtual void MultiLevelJsonBase::loadFromQVariantMap . ... Definition at line 107 of file MultiLevelJsonBase.hpp . ...

... Science . ... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: High-mass Star Formation at High-Angular Resolution . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... ESO Data Access Policy . ... This project aims to obtain a better understanding of high-mass star formation by performing a comparative study of sites of high-mass star formation that display SiO maser (radio laser) emission. ...

To main of Laboratory . The research work and design of optical and optical-electronic devices are carries out by laboratory staff: . ... Lens: . ... In the layout 1 prism systems perform functions of dispersive element, corrector of aberrations, optical reducer. ... Spectral range 200 - 400 nm; . ... Back Forward . ... The main corrector's function are compensation of field aberrations of the main spherical mirror of a telescope (diameter of 600 mm, f'=1200 mm) and increase aperture ratio. ...

The beam pattern and the polarization characteristics . of the radio telescope RATAN-600 . The Mueller matrix elements was computed via formulas [1]: . ... The BP were computed by the aperture method, proceeding from the fild distribution in the aperture of the primary mirror. The components of the main and cross-polarization components of the electric field in the vertical aperture of the primary mirror was computed in Frenel diffraction approximation. ...

What if we could determine if a given star is likely to host a planetary system like our own by breaking down its light into a single high-resolution spectrum and analyzing it? ... The dark bands result from specific chemical elements in the star s outer layer, like hydrogen or iron, absorbing specific frequencies of light. By carefully measuring the width of each dark band, astronomers can determine just how much hydrogen, iron, calcium, and other elements are present in a distant star. ...

... 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 : . ...

... However, to avoid excessive central obscuration, a conical baffle is necessary in addition to the usual primary and secondary baffles. ... It is formed of graphite fiber reinforced plastic because of the high stiffness to weight ratio of this material. ... Masking tape is used to limit the extent of adhesive that attaches the outside acrylic ribs to the baffle surface. ... Inside ribs block grazing light-scattering paths from this surface (right image). ... The baffle quality is excellent. ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . ... Meade Series 5000 HD-60 6.5mm 6-Element Eyepiece (1.25") . ... Meade Series 5000 6.5mm HD-60 6-Element Eyepiece, #07730 (1.25"). The latest advancement in the Meade Series 5000 eyepiece series offers a large 60 apparent field of view and a flat field of view which is tack sharp right to the edge. ... Meade Series 5000 Pl ssl Eyepieces offer a very wide field-of-view, with pinpoint edge of field sharpness and contrast. ...

... SSAU History . SSAU roadmap . ... Engineers of SSAU laboratory of additive technologies started to carry out experiments in the field of 3D-printing of metal parts, components and assemblies. The research of Samara scientists will allow producing highly complex and non-standard elements of spatial forms required for design and creation of advanced aviation and space technology. ... SSAU Laboratory of Additive Technologies is established in 2011. ... e-mail: ssau@ssau.ru . ...

ALFA IF/LO System Lisa Wray Edgar Castro Electronics Division ALFA IF/LO System ALFA Galactic Consortium March 2003 ALFA Receiver System Front End § 7 element feed array § corcal available § 40 dB gain § Bandpass filter module Downconverter § Single frequency downconversion § RF: 1225-1525 MHz § IF: 150-450 MHz § Power monitor § Fiber optic converter Buffer ...

Next: Limiting Energy Channels Input Up: *fit* - Fit Data Previous: Raymond Model . The model is a two-temperature Raymond thermal spectrum, low temperature range is 0.55 to 0.65 keV, high temperature range is 1 to 2 keV, element abundance table is cosmic, abundance of heavy elements (atomic number >2 ) is 50% of the value in the table. Note that 0.7 = log(5.0), specifies that the second component normalization will be 5 times the normalization of the first component. ...

... General information . ... Staff . Research staff . ... Research . ... Star formation . ... Information . ... Historical highlights . Historical research . ... Rocky accretion in a young solar-type star . ... The results found in the case of the young solar-type stars 2MASS J08095427-4721419 are presented in " The Gaia-ESO Survey: chemical signatures of rocky accretion in a young solar-type star ", by Lorenzo Spina et al, published on Astronomy and Astrophysics ( A&A 2015, 582,6 ). ...

RATAN-600 as a Multibeam Radio Telescope for CMBA Observations V.Khaikin et al. The Special Astrophysical Observatory of RAS, Russia Multibeam mode seems to be an unavoidable solution for the ex- isting and the next generation re ector radio telescopes where high sensitive(or high speed) mapping is the main goal. In some observation modes RATAN-600 aberrationless focal zone may be signi cant enough to locate a feed array consisting of 500-3500 receiver elements. ...

The approaches mentioned in the section title belong to one family which is called in Newton's book [ 56 ] the short waves or high energy approximation (HEA). It means the scattering by soft particles (or potentials) in the case of the wavelengths short in comparison with the particle size (or correspondingly the case of scattering of high energy particles by the potentials). ...

We have designed the laboratory model of static Fourier spectrometer for onboard usage for spectral study of atmosphere and ionosphere. The gain of model is to simulate onboard FS which will not have any moving elements (all its optical elements will be mounted at fused quartz monolithic construction), to compare experimental results with theoretical estimations and to measure MTF of CCD array. ... This fact connected with low frequency response of CCD array due to small format of it. ...

Microsymposium 40, abstract 28, 2004 (A4 format) HIGH PURITY GE GAMMA-RAY SPECTROMETER ON JAPANESE LUNAR POLAR ORBITER SELENE. ... GRS consists of three parts; gamma-ray detector (GRD), compressor driver unit (CDU) and gammaray and particle electronics (GPE). ... It is retained at ~80K, by means of a mechanical cryostat. ... The asymmetric shape makes it efficient to veto gamma-rays from the SELENE vehicle and leakage photons from the Ge detector, as well as to avoid charged particles. ...

... Clearly, what we need is big telescopes with high resolution spectrographs, to get good data on QSO absorption-lines. With bigger and better telescopes, you could measure the clustering and 3D distribution of gas in the early universe, by looking at lots of faint QSOs in the same parts of the sky. ... With the high resolutions made possible by big telescopes, you could look at the internal velocity structure of the absorbing clouds. ...