You Can Make Stellar Images Brighter . Articles | ... A few months ago I wrote an article titled "You Can’t Make Them Brighter". So why am I now writing that you can make them brighter. ... The image of a focused star is actually a small disk called the Airy disk, named after the 19 th century scientist Sir George Airy. ... For a given aperture, a smaller Airy disk means that the light is focused to a smaller disk and is therefore brighter. ... www.astronomy.net . About Astronomy Net | ...

... Hand Made (Модераторы: Diskus , Hornet ) > . Measuring the Brightness of the Sky RL1 . ... Cartes du Ciel - Sky Charts . ... Оффлайн . Сообщений: 7320 . Благодарностей: 1001 . ... Ответ #80 : 24 Январь 2012, 22:52:39 ? ... Сообщений: 6212 . Благодарностей: 251 . ... Сообщений: 504 . Благодарностей: 31 . ... Сообщений: 3068 . ... Сообщений: 4703 . Благодарностей: 245 . ... Телескоп Sky-Watcher BK DOB8 . ... Сообщений: 28 . ... Ответ #88 : 09 Сентябрь 2014, 16:46:26 ? ...

Atmospheric influence on the different radio-engineering system functioning . ESTIMATION OF ATMOSPHERIC OPTICAL CHARACTERISTICS AND REMOTELY SANSED IMAGE CORRECTION . ... Direct transmittance estimation results for 12 channels of the spectrometer CHRIS. ... We have managed to develop a direct method of estimating the discrete Normalized Atmospheric Point Spread Function (NAPSF) from available images alone, not using any external sources of information about the atmosphere. ... IRE RAS 1996-20 11 ...

Images and text 2003 Paul Valleli . While up at Stellafane for pre-convention preparations, I spent some early morning times, experimenting with different videography setups on the 13" F/10 Schupmann at the McGregor Observatory. ... Mars was too bright and would have required neutral density filters. ... Next time, I will try 12mm and 9mm projections. ... I aquired about ten thousand frames by 3AM, at which time a breeze picked up and the seeing went to Hellas! ... 2003 Paul Valleli . ...

... The ancient chronical said about the colour rings around the Sun and the Moon, about three suns in the sky, light columns, bright lightning, different "comets" rushing to the Earth, moving among the stars or round the Earth with the sky. All these occurrences may be divided into three categories: one that occur in the near or far space, processes going on in the Earth atmosphere under the influence of cosmic factors and at last the occurrences connected with the Earth atmosphere. ... Rainbow . ...

... Particle distribution: dN d - with =1- ln pcn ln g Electron-photon conversion e + _ + _ electron _ e e electron/ positron high- energy photon e+ positron -25 cm cross-section, 10 8 6 4 2 0.5 1.0 center-of-momentum energy , MeV (log scale) 2 e + _ Proton-neutron conversion cm cross-section, 10 proton u +2/3 2 -28 d -1/3 6 u +2/3 4 resonance _ u d d+1/3 -1/3 d u+2/3 +2/3 -1/3 2 150 340 center-of-momentum ... Does the peak (cut-off) energy decrease with observation angle? Not always. ...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...

New reduction of minor planets photographic plates obtained with Pulkovo Normal Astrograph A.A. Berezhnoy Pulkovo Observatory of RAS, Saint-Petersburg, Russia Minor Planet observations at Pulkovo Periodical observations of 14 bright asteroids named Selected Minor Planets (SMP) were performed at Pulkovo since 1948 within the international framework started by works of B.V. Numerov and D. Brouwer. ... 108 133 113 74 124 67 97 88 14 84 64 5 20 19 Epochs (YYYY.MM) 1200 Mean values of total obs. ...

... Лента абразивная FIT на тканевой основе для ленточных шлифовальных машин. ... 100 Г. MasticDent Hios Herbs- это синтезированная паста с витаминами А, Е и В5 и мастичным маслом, которые укрепляют десны и зубную эмаль. ... Шаг измерения секундомера 1/100, максимальное время измерения 24 часа. ... Внешний слой: 100% полиэстер, саржа деним или 100% полиэстер, оксфорд с принтом . Подкладка: 100% тафта из нейлона / 100% ворсованный полиэстер и плюшевый трикотаж / сетка из 100% полиэстера . ...

Page 1 I*M*P*R*S on ASTROPHYSICS at LMU Munich Astrophysics Introductory Course Lecture given by: Ralf Bender and Roberto Saglia in collaboration with: Chris Botzler, Andre Crusius-WДtzel, Niv Drory, Georg Feulner ... , Ulrich Hopp, Claudia Maraston, Michael Matthias, Jan Snigula, Daniel Thomas Powerpoint version with the help of Hanna Kotarba Fall 2007 IMPRS Astrophysics Introductory Course Fall 2007 ... IMPRS Astrophysics Introductory Course Fall 2007 Page 17 11.2. ...

MODERN APPROACHES TO CALCULATION OF THE PROPERTIES OF MATERIALS FOR ENERGY STORAGE A. Kabanov Samara State University The modern technologies demands to compact and effective rechargeable systems of energy storage. ... In this work we investigated the activation energies of one promising compound ­ Li2CoPO4F using combination of two methods ­ ab-initio and geometrical calculations. ... The nudged elastic band (NEB) method is adopted to find the kinetic energy barrier along diffusion pathways. ...

... We had a unique diagnostic tool for determining whether or not the secondary was fractured during the dark run in that we had 3 sets of focus sweep data for the imaging camera taken on the nights of 05 October 1999, 11 October 1999, and 14 October 1999. ... Figure: 05 October 1999, CCD g1 . ... Surface plot. ... Figure 32 plots the same data but for CCD g3. ... Figure: Comparison of normalised brighness for the out-of-focus doughnuts for the nights of 05, 11, and 14 October 1999 for CCD g1. ...

Next: The Photometric Performance of Up: NICMOS Data Calibration and Previous: Status and Goals of . ... Absolute Spectrophotometric Standards . Absolute Photometry . ... Velocity shifts and Photometry with Narrow-band Filters . ... HST, NICMOS, near-infrared, standards, photometry, calibration . ... In practice NICMOS does not have a set of filters matching any of the standard ground-based photometric bands and this poses a challenge when trying to achieve precise absolute photometry. ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... Although their determination is based on the scattering process model, independent check-ups by rocket experiments have shown their correctness in experimental applications. ... Ionospheric data analysis, especially during strong disturbances, cannot be without some other kinds of diagnostic tools. ... The lack of data has always been a challange in this case. ...

... This sp ectral distribution is defined b oth by the energy distribution in the target star's sp ectrum and by the sp ectral resp onse of the detector, i.e. by the central wavelength 0 and the effective sp ectral bandwidth . ... On the right: The collection of the MASS sp ectral resp onse curves. ... Table 1: Integral characteristics of the resp onse curves of the MASS devices. 0 -- central wavelength, ef f -- effective wavelength for A0 V stars, -- effective bandwidth (integral under the curve). ...

... Average effective wavelengths and band widths for various sp ectra Lyrae spectrum f flat k е 1014 Hz 5386 ± 18 4.66 ± 0.04 5714 ± 12 4.1 6234.5 ± 0.5 1.03 5372 ± 18 4.69 ± 0.04 eff 2 Optical Filter ID 1 2 3 4 a Fo c -6 10 erg/cm2 s 12.55 ± 0.10 11.04 ± 0.01 2.77 ± 0.004 12.63 ± 0.10 fo d 6 10 photons/cm2 s 3.40 ± 0.02 3.18 ± 0.004 0.87 ± 0.002 3.42 ± 0.02 Power-law eff f 2 е 5746 ± 317 6197 ± 253 6305 ± 31 5736 ± 316 spectra pl k 1014 Hz 3.70 ± 0.26 3.14 ± 0.16 0.88 ± 0.01 3.70 ± 0.27 Table 1. ...

The project of the informational system creation on the problem of evolution of radio galaxies, as a part of the "Big Trio" project aimed on studing of distant radio galaxies, is designed. This system allows a user to operate with simulated curves of spectral energy distributions (SED) to estimate ages and redshifts by photometry data. Authors use SEDs of several models for different types of galaxies. ... The HTTP and e-mail access is organized to this system. ...

... A non-linear relationship is observed between the sky brightness on clear and overcast nights, with a change in behavior near the rural to urban landuse transition. ... The great variation in skyglow radiance observed from site-to-site and with changing meteorological conditions underlines the need for a long-term international monitoring program. he introduction of artificial light has caused an unprecedented disruption to the nighttime environment over large areas of the Earth. ... Data processing...

... About meteorites . ... Meteorite Encyclopedia . ... About laboratory . ... On the night of September 24-25, in the north of Irkutsk Oblast, local residents saw a brightly glowing space object draw a line across the sky and fall into the taiga. ... But scientists learned of the heavenly visitor only on October 3, when a fax arrived at the Institute of Sun And Earth Physics from Bodaibo. ... The first thing we did was to interview residents of villages located along the meteor's flight path. ...

Data Flow System IR Camera Calibrating VISTA Data Astronomy Unit Queen Mary University of London Jim Emerson Simon Hodgkin, Peter Bunclark, Mike Irwin, Jim Lewis Cambridge Astronomical Survey Unit , Institute of Astronomy , Cambridge The United Kingdom Astronomy Technology Centre on the site of the Royal Observatory Edinburgh VISTA Data Flow Transfer function (image in, DN out) of end-to-end system so that instrumental effects can be removed from the data. ... VISTA?? ...