... These are the filter transmission, the field of view (determined by the NICMOS optics external to the dewar, in combination with the HST mirrors), the reflectivities of the various external mirrors and the transmission of the dewar window. ... The sensitivity will obviously be affected by the pixel field of view. ... Finally, the optical efficiency will be degraded further by the reflectivities of the aluminum with MgF 2 overcoated HST primary and secondary mirrors. ... Primary mirror temperature . ...

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• ST ScI Preprint #1350
• Gratings and Optical Elements
• Absorption line spectra of the UV bright z=2.4 QSO HE 1122-1649

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• Astronomy HyperText Book: Fusion Sequences in Stars
• Formation of the Elements

... Content Model: %Body.Content . ... Note that the ID, LANG and CLASS attributes can be used with virtually all of the elements permitted in the document body. ... CLASS . ... The CLASS attribute is most commonly used to attach a different style to some element, but it is recommended that where practical class names should be picked on the basis of the element's semantics, as this will permit other uses, such as restricting search through documents by matching on element class names. ...

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• The IMG (Image) Element
• Information Type Elements
• Fill-Out Forms

... Plastic forming and welding of optical elements for laser technologies and optical telecommunications. A set of technological processes of manufacturing of optical elements with sophisticated profiles for laser technologies and optical telecommunications has been developed in the Institute of Solid State Physics . ... тАв€а to form optical surfaces with non-spherical and rather sophisticated profiles, improving essentially effectiveness of laser technologies and optical telecommunications; . ...

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• About RATAN

Radiative losses have been determined by using the Arcetri Code line emissivities for each element calculated adopting a plasma electron density of 10 10 cm -3 . Each emissivity line is structured using the following format: An example from the Mg file (Phot cm 3 s -1 ) is given below: . ... Mail comments regarding interface to landi@poppeo.nrl.navy.mil Mail comments regarding spectrum data to mlandini@arcetri.astro.it, landi@poppeo.nrl.navy.mil ...

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• Descrizione tecnica NICS
• Language Elements
• Index of /science/chianti/chianti_3.03/elements

... Elements in the Aftermath . ... CXC , NASA Explanation: Massive stars spend their brief lives furiously burning nuclear fuel. ... And so a supernova explosion , a massive star's inevitable and spectacular demise, blasts back into space debris enriched in heavier elements to be incorporated into other stars and planets (and people!) ... Cataloged as G292.0+1.8, this young supernova remnant in the southern constellation Centaurus resulted from a massive star which exploded an estimated 1,600 years ago...

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• Астронет > Elements in the Aftermath
• Elements of the Swan Nebula
• Астронет > Elements of the Swan Nebula

... 2001 October 26 . Elements in the Aftermath . ... CXC , NASA . ... And so a supernova explosion , a massive star's inevitable and spectacular demise, blasts back into space debris enriched in heavier elements to be incorporated into other stars and planets (and people! ... Just below and left of center, a point like object in the Chandra image suggests that the enriching supernova also produced a pulsar in its aftermath, a rotating neutron star remnant of the collapsed stellar core. ...

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• APOD: 2003 August 11 - Elements of the Swan Nebula
• APOD: May 9, 1996 - Supernova Remnant: Cooking Elements In The LMC
• APOD: 2002 July 25 - NGC 1569: Heavy Elements from a Small Galaxy

... HS2253+8023 is a helium-rich white dwarf with traces of metals and hydrogen, which was recently discovered in the Hamburg Quasar Survey. We have derived temperatures and element abundances from optical and UV spectra by comparison with synthetic line profiles. In addition UV (HST, IUE) and optical spectra of the well-known white dwarf GD 40 with very similar atmospheric parameters were analysed and element abundances determined. ...

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• Spectrum - control
• Atomic data for Stellar Atmospheres: lte_lines
• Stars Beyond Maturity

Smithsonian Astrophysical Observatory . Potential SAO Predoctoral Projects, 2004 . ... Quasar Winds . ... 10(4) papers written about quasars make no connection with this paradigm, and deal with the gas surrounding the quasar: the broad and narrow emission lines, and various UV and X-ray absorbing material. ... Do the famous broad emission lines of quasar also come from this wind? ... How much do quasar winds pollute intergalactic space? Do quasar winds make dust on their way out? ...

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• Two-Temperature Raymond Model
• Raymond Model
• The AstroStat Slog light curve

... Crossed Dipoles for dual polarization conducting plane Droopy Dipoles for broad-band, dual polarization LOFAR -Low Band dipole element 4x4 array of dipoles on ground plane - the ` LOFAR -High band' element h s s (many analogies to gratings for optical wavelengths) 4x4 Tuned for 150 MHz sin projection ZA = 0 deg 45 15 60 30 75 4x4 Patterns · · ZA = 30 deg tuned for 150 MHz 120 150 180 210 240 Lofar stations ??? a ` station ' = 101 ` ...

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• The Elements of Gravitational Lensing
• casacore: casa::SpectralFit Class Reference
• casacore: components/SpectralComponents/SpectralFit.h Source File

Subject, Problems and Objects of Theoretical Astrophysics. ... Stellar Photospheres, Their Features. ... Physics of Continuous Radiation Absorption in Stellar Photospheres. ... Continuous Radiation Absorption in Stellar Photospheres of Various Spectral Classes. Solar Type Photospheres. ... Characterisics of Absorption Lines. ... Interstellar Absorption Lines, Their Features. ... Physical and Dynamic Features of Interstellar Medium, Which Follows from Observations of Interstellar Absorption Lines. ...

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• Introduction to Astronomy
• Laboratory static Fourier-spectrometer
• Elements of osculating planetary orbits. Explanation for Computer Ephemeris.

... Format of the orbital elements | Estimation of the extrapolation errors | Version 1" of the orbital elements collection, determined by KIAM during flight and used for operations planning . Version 2" of the of the orbital elements collection, modified by IKI during flight and recommended for the orbital calculations during scientific data processing . ... Three kinds of the INTERBALL Auroral probe (IB_AUR) orbital elements' collections are presented here. ... IKI RAN | SSC IKI RAN | ...

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• Multi-element X-ray detection module
• The INTERBALL Tail PROBE orbital elements
• About modification of the INTERBALL orbital elements

... self-absorption - the absorption of light shining on an object by a process similar to that which produced the light originally; if a cloud emits less light than it absorbs from other clouds behind it, this net loss of light, termed self-absorption , causes the foreground cloud to appear darker than the background field (the term is from spectroscopy, where small absorption dips sometimes occur in larger emission lines, making the latter look as if it is absorbing part of itself) . ... HISA Main ...

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... In laboratory the design and a manufacturing techniques mirror aspherical optics are developed ("fokon", ellipsoid, aspherical mirror).Such optical elements are made of widespread aluminium alloys on the standard equipment without use diamond turning. ... Using: optical blocks of not image optical devices for transitions, collimation, focus (concentration) radiations in a wide spectral range from UV to IR. Focusing and collimation of light; . ... circle aperture/ring aperture; . ... Back Forward . ...

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• Optical systems and devices

Cosmology, Religion & Kansas . ... Cosmology is the study of the origin, current state, and future of our Universe. ... My cosmology tutorial is an attempt to summarize these discoveries. ... These measurements of very small CMB temperature fluctuations over 1% of the sky with a beam size 40 times smaller than COBE's 7 o beam confirm earlier work by a group at Penn & Princeton and data from BOOMERanG's test flight, but provide 3 to 4 times more accuracy. ... Ned Wright's Home Page . ...

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• Optical spectroscopy
• Eddington's Temperature of Space
• Specifying Elements in a Table

Research Activities . Integrated superconducting submm receivers and spectrometers. Technology for fabrication of superconducting integrated circuits based on high quality submicron Nb and NbN tunnel junctions with high current density. Development, study and optimization of the superconducting phase locked Local Oscillator for integrated spectrometer. ... Development of the superconducting elements for operation at frequencies up to 1 THz. ... Activities | ...

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• Lab234 - Design, fabrication and experimental studies of a novel device: Cold
• Project 1 - SfP - Ovsyannikov, Supersensitive high-Tc superconducting
• Lab234 - Superconducting Integrated Submm Spectrometer for Laboratory

... Made with Swarovski Elements - известный бренд, специализирующийся на производстве одежды и аксессуаров, украшенных кристаллами Swarovski. ... В нашей акции представлена богатая коллекция кожаных женских сумок, инкрустированных кристаллами.Артикул: 00_92_BLUE_JEANЦвет: синийСостав: 100% натуральная кожаОсобенности: кожаная сумка с двумя ручками на молнии, украшенная кристаллами Swarovski. ... Тип: Сумка . ... Сумки . ... Тип гриля: Электрический . ... Полезный объем духового шкафа: 66 . ...

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• Lua - Roccat - Roccat Соковыжималка Element
• Villeroy & Boch Home Elements Тарелка десертная глубокая круглая 2 25 см -
• Жакет - Shoreline by Violana - Shoreline by Violana Паяльник Element 878

... We describe enhancements made to Sherpa for the CIAO 2.0 release, concentrating upon those that enable a user to: (1) analyze Chandra X-ray Observatory grating data with wavelength- or energy-space models; (2) simultaneously fit background and source datasets; and (3) estimate and visualize confidence intervals and regions. ... Sherpa is the modeling and fitting tool of the Chandra Interactive Analysis of Observations (CIAO) software package (Doe et al. 1998 and references therein). ...

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• Modelling Spectro-photometric Characteristics of Eclipsing Binaries
• Numerical Simulations of Plasmas and Their Spectra

... They were determined as a result of orbit improving on the base of all kinds of optical observations available in the catalog of observations of the Minor Planet Center on March 16, 2014 (radar observations have not been used at this stage). ... As the MPC orbits do not all were improved simultaneously with EMP orbits, only 383866 sets of elements were used for data comparison (for selected sets of elements process of improvement had started with the use of the same observations). ...

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• ENGAMPLE

... 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. ...

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• AXAF-Chandra