The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

... GCN 8471 | ... TITLE: GCN CIRCULAR NUMBER: 8516 SUBJECT: GRB 081102: MASTER refind and final results DATE: 08/11/11 15:50:10 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina, D.Kuvshinov, P.Balanutsa Sternberg Astronomical Institute, Moscow State University A. Tlatov, A.Parkhomenko Kislovodsk Solar Station of the Pulkovo Observatory V.Krushinski, I.Zalognikh Ural State GCN Circ 8470, Lipunov et al., ...

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. ...

. Search this album . Gallery . :: Stromlo before the 2003 fires . :: Norm Banham's pictures of Mount StromloтАж . :: Buillding optical munitions . Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . Sidebar Right . View full size . Title: Buillding optical munitions . File name: sp0039.jpg . Owner: Gallery Administrator . Dimensions: 1280 x 944 px . Page: 1 2 6 7 8 9 10 11 12 13 14 15 . Powered by Gallery 3.0.9 (Chartres) . Login

... 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; . ...

. Name . Last modified . Size . Description . Parent Directory . - . DRD26a_ESPRESSO-Paranal_ICD_VLT-ICD-ESO-13529-5412_Issue_4.docx . 31-Mar-2016 15:31 . 31M . Thumbs.db . 31-Mar-2016 11:24 . 228K .

The Navy Prototype Optical Interferometer . Articles | ... John Huggins, October 1, 1998 . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

The optical scheme of the instrument is sketched in Figure 1 , it is designed to match the F/20 focal ratio of the TIRGO telescope. We have, following the optical path, the window of the dewar, the order sorting filter (not in figure), a field lens, in Calcium Floride, and the slit, in the focal plane of the telescope. ... The resolving power is (for first order of grating) of about 600 in the center of J band and 950 in the center of the K band, using a slit of two pixel (3.46 arcsec). ...

... Astrophysics Group . Research . Optical Interferometry . ... COAST Interferometer . Magdalena Ridge Observatory Interferometer . ... Very Large Telescope Interferometer . ... These pages describe the research activities of the optical interferometry sub-group of the Cavendish Astrophysics Group . ... To this end, we are primarily involved in two optical interferometer projects, the Magdalena Ridge Observatory Interferometer (MROI), and the Very Large Telescope Interferometer (VLTI). ...

... The optical spectrum of the infrared source IRAS04296+3429 (optical counterpart - G0Ia star, V=14.2) was obtained with the echelle spectrometer PFES at the prime focus of the 6m telescope. ... 1995, Szczerba et al. 1996), our detailed modelling of its spectral energy distribution suggested that this source also should show the 30 m band. ... Stars: abundances - Stars: atmospheres - Stars: AGB and post-AGB - Stars: individual: IRAS04296+3429 . ... Spectral energy distribution . ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... LX850 Series . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... LX70 Series . ... The Meade LX70 Series is the perfect choice for the cultivated observer looking to chase deep sky objects such as galaxies, star clusters, nebulae, and more. ... Optical Tubes . ... LX70 Optical Tube Assemblies . ... Dealer Locator . ...

... Киевский клуб любителей астрономии "Астрополис" > . ... Оборудование (Модераторы: LifeIsGood , Hornet ) > . Delta Optical Titanium 9x63 впечатления . ... Астрономия . ... Астрономия в Украине . ... Ответ #20 : 10 Май 2011, 15:00:41 ? ... Последнее редактирование: 10 Май 2011, 19:27:20 от Альдебаран ? ... Цитата: Stainless_steel от 10 Май 2011, 12:37:23 . Цитата: ds40a от 10 Май 2011, 12:35:48 Интересно, что скажет alexmeade ? ... Последнее редактирование: 13 Май 2011, 23:04:51 от alexmeade ? ...

We present quasi-simultaneous multi-colour optical/near-IR photometry for 157 radio selected quasars, forming an unbiassed sub-sample of the Parkes Flat-Spectrum Sample. ... The spectral energy distributions of the radio- and optically-selected sources are quite different. ... We show that the colours of our red quasars lie close to the stellar locus in the optical: they will be hard to identify in surveys such as the Sloan Digital Sky Survey. ...

Next: Infrared Data Up: Contents Previous: Optical Photometry . ... For example, one method is to derive the spectral energy distribution (SED) for a target star and compare it to the SED of a dereddened standard star. ... Temperature can be determine via the B - V color (Gilliland 1985): . ... The results produced small extinctions to the background stars of between A and A . ... The most accurate extinction calculation requires both IR and spectral data. Infrared Data . Spectroscopic Data . ...

... Despite new observation methods provided by radar and satellite instrumentation , optical measurements are still important when studying auroras . ... Because of the monochromatic nature of the auroral light, photomultiplier tubes with very narrow band filters were used in the measurements. ... The spectra of the background emissions from atmospheric impurities (clouds, ice crystals, etc.) is rather continuous, and measurements just outside the auroral emission lines are valid for the line itself. ...

RTT150 . Russian-Turkish 1.5-m Telescope . ... Telescope has two main foci (Cassegrain and Coude ) and allows to use six optical systems based on Ritchey-Chretien system with a common main mirror . At present scientific observations are being performed at the Cassegrain focus in main optical scheme with focal ratio of 1:7.7. ... flat . ... To use the Coude focus the removable flat diagonal mirror is also needed in the crossing point of declination axis and main optical axis of telescope. ...

23may12: strobe lights from yiye avila's tower on mount roncador . ... On 21may12 I made a video of yiye avila's tower starting around 18:30. ... canon sx230hs camera . ... There are two strobes, one 1/2 way up tower (just below the donut). ... At 240Frames/sec the strobe was seen in two frames (multiple times). 1./240 =4.1 millisecond. ... The strength of the strobe lights was not the same in the two frames, so part of the duration may be that the two strobes are not exactly synchronized . ...

... title='Мышь проводная Dialog Pointer Optical MOP-04BU' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> . ... Платье Love & Light. ... Платье - Laura Bettini - Laura Bettini . ...

Static Fourier spectrometers are often used for spectral measurements of the ionosphere emissions. There are two main advantages of Fourier spectrometers (FS) - large geometric factor and high spectral resolution; these parameters are two orders better than for grating spectral instruments. ... In scanning Fourier spectrometer optical and electric modulation of signal is used to avoid this problem, for static Fourier spectrometer there are no such ways. ...

Astronomy Picture of the Day . ... Credit: P. Stomski ( W. M. Keck Observatory ), Caltech , U. California Explanation: In buildings eight stories tall rest mirrors ten meters across that are slowly allowing humanity to map the universe. Alone, each is the world's largest optical telescope : Keck . ... Since opening in 1992 , the real power of Keck I (left) has been in its enormous light-gathering ability - allowing astronomers to study faint and distant objects in our Galaxy and the universe. ...