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 . ...

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 . ...

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. ...

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. ...

Peremennye Zvezdy", . ... We present the historical light curve of NGC 4151 for 1906 - 2007. The light curve is primarily based on our published photoelectric data (1968 - 2007, about 1040 nightly mean measurements) and photographic estimates (mostly Odessa and Moscow plates taken in 1906 - 1982, about 350 measurements; Oknyanskij 1977, 1978, 1983). ... 1983) (Harvard and Steward observatories' patrol plates taken in 1910 - 1968, about 210 measurements). ... Light Curve . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The light curves of AM CVn systems obtained using the Liverpool Telescope which showed an outburst. We show the start date of the observations in the top right of each panel and the orbital period of each system towards the right. ... The orbital period of the outbursting systems lie in the range 24тАУ44 mins and is remarkably consistent with disk-instability predictions. ... Systems which have short periods ( . ...

... 2013 January 17 . Cas A: Optical and X-ray . Image Credit: X-ray - NASA , JPL-Caltech, NuSTAR ; Optical - Ken Crawford ( Rancho Del Sol Obs. Explanation: The aftermath of a cosmic cataclysm, supernova remnant Cassiopeia A (Cas A) is a comfortable 11,000 light-years away. ... The scene combines color data of the starry field and fainter filaments of material at optical energies with image data from the orbiting NuSTAR X-ray telescope. ... About APOD | ... A service of: ASD at NASA / GSFC . ...

... OEM OPTICAL COMPONENTS . ... Home Products OEM Optical Components . ... Objective, Plan Achromatic, 4 X 0.12, BF . ... Objective, Flatfield Achromatic, 20 X 0.40, BF . ... Objective, Flatfield Achromatic, 30 X 0.90, Iris, H2O Imm., ... Objective, Flatfield Achromatic, 60 X 1.00-0.70, Oil, Iris, BF . ... Objective, Flatfield Achromatic, 100 X 1.25, Oil, BF . ... Q-Plan™ Achromat Objective, 2.5 X 0.08, BF . ... Q-Plan™ Achromat Objective, 60 X 0.85, dry, BF . ... Eyepiece, Widefield, 10X, F.N. 18 . ...

The basic characteristics of the instrument are set by the aperture, focal length and resolution of the image forming lens, the dispersion of the spectrometer, and the sensitivity of the detector. ... The lens is internally focused, and maintains acceptable focus (2 pixels in the detector plane) over a typical spectral coverage of one grating setting. ... along the spatial dimension of a 25mm square detector in the final spectral image plane the 400mm lens is 3.2њ. ... Diffraction grating . ...

Общая Астрономическая Конференция > Все про астрономическое оборудование > Астрономическое оборудование . Guan Sheng Optical . ... Поиск . ... конференции. ... IMG] код Вкл. ... Созвездия (поиск и описание) .. Созвездия южного неба (поиск и описание) .. Осенние созвездия (поиск и описание) .. Летние созвездия (поиск и описание) .. Околополюсные созвездия (поиск и описание) .. Весенние созвездия (поиск и описание).. Зимние созвездия (поиск и описание) .. ...

... Seminar archive . ... Type Ia Supernovae (SNe Ia) have an important role to measure a distance to an anonymous galaxy because they have a good correlation of the decline rates of the light curves with the absolute luminosity. ... First, super-Chandrasekhar SNe which have extremely high luminosity, slow decline rate of the light curves, slow expansion velocity and strong carbon features. ... As another example of diversity of SNe Ia, I would like also to introduce Type Iax SNe. ... All seminars: . ...

Seven months ago, on Mar 19, 2008, at 09:12 Moscow time, a new star appeared on the sky. The Sun had already risen over the Russia, but people of the Western hemisphere might be able to see by their eyes a faint starlet near one of Bootes constellation stars. This starlet appeared and faded by an order of magnitude in a minute. Astronomers named it GRB080319B or, informally, the Naked-Eye Burst, as it was twice as bright as human eye can see a star. ... Royal Astronomical Society . ...

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Wide-angle telescopes for photometry and polarimetry in optical and infrared ranges . ... Investigation of the Earth’s atmosphere, comets, interplanetary and interstellar medium with brightness and linear polarization measurements of extended sources and sky background in optical and infrared spectral ranges. ... The devices are small diameter telescopes with CCD-detectors for optical and infrared spectral range with spectral and polarization filters. ... 15-cm telescope with cooling down to 80 K . ...

MFS . Data archive MFS . ... Data archive HSFA . ... Catalogue of solar flares . Atlas MFS . Data archive MFS [FTS, AVI] . Data MFS-2009 . Data MFS-2010 . Data MFS-2011 . Data MFS-2012 . Flares archiv with asymmetry absorption . ... Catalogue of prominence 2011 . Catalogue of prominence 2012 . ... Data MFS-2013 . Data MFS-2014 . Data MFS-2015 . ...

JournИes SystХmes de RИfИrence Spatio-Temporels , St Petersburg, Russia, 22-24 Septembre 2014 Optical monitoring of QSO in the framework of the Gaia space mission F. Taris (1), G. Damljanovic (2), A. Andrei (3), A. Klotz (4) , F. Vachier (5) (1) Observatoire de Paris - SyRTE, France , (2) Astronomical observatory of Belgrad, Serbia, (3) Observatorio Nacional MCT, Brasil, (4) UniversitИ de Toulouse, France (5) Observatoire de Paris ­ IMCCE, ...

Optical Observatories . ... National Optical Astronomy Observatories . ... Adam Mickiewicz University - Astronomical Observatory . ... Astronomical Institute and National Observatory of Athens . ... Jagiellonian University Astronomical Observatory - Scientific research here comprises radio and extragalactic astronomy, solar radio emission, active galactic nuclei, interstellar matter, galaxies, cosmology, variable stars and comets. ... National Radio Astronomy Observatory Home Page . ...

... Time delay determinations in astrophysics are used most often to find time delays between flux density variations in different spectral bands and/or lines in AGNs, and different images of gravitationally lensed QSOs. ... OB used an idea to take into account the known gravitational lensing time delay to get combined radio and optical light curves and then to use them for determination of the possible radio-from-optical time delay. ... Correction for change of time delay and radio flux. ...

... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...

. Departement of Quantum Astrophysics . Head: Kurt V.G. , Prof. ultraviolet spectroscopy of planetary upper atmospheres and interplanetary/interstellar medium; . observations of gamma-bursts and optical identification of their sources; . long-base optical interferometry. Staff: .