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 ...

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... Moon . ... What can astronomers tell us about the different colors on the surface of Jupiter's moon Europa? ... We can use the colors of Europa s surface to tell us about the chemical compounds that make up the surface and subsurface of the jovian moon. Even before the first spacecraft made a close visit to Europa, astronomers on Earth used telescopes to study the moon and were able to use a technique called spectroscopy to determine that Europa s surface is composed mostly of water ice. ...

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IKI RAN Radar Image Collection . Atmospheric phenomena / Convective patterns . ... Full images: calibration coefficients for different strips are different . ... Oceanic internal waves . ... Source image: image size: 2048x3665pixels; pixel size: 25 x 25 m, file size: 7.2Mb . ... O.Lavrova, M.Mityagina, K.Sabinin, Investigation of perturbing action of atmospheric and internal oceanic processes on the waved sea surface using ocean remote sensing data // OCEAN'98 IEEE/OES Conference Proc., 28 Sept.- ...

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• RARKu9207152127
• RARKu9207152053
• RARKu9207161839

Fabry-Perot data cubes. Introduction: what is "data cubes"? Observations with the IFP consist of successive acquisition of a few dozen images of interference rings from the object (or from a calibration lamp) when changing the optical path between the flat-parallel plates. The radius of the rings is a function of wavelength and gap between the plates of the interferometer. ... Its interference rings of Ne line which use for phase calibration (convert object data to wavelength-scale). ...

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The antenna element Ravi ATNF, Narrabri 1. ... Miriad works out the radio Parabolic reflector: A parabolic reflector adds all the fields from a surface = aperture at a focal point. ... Feeds are `compact' and `corrugated' horns The inner profile is curved The inner surface has grooves Cross-section of a horn Sub-reflector 28 main-reflector Feed horn O `optical axis' The feed horn adds all the rays that come from the 28 deg. wide sub-reflector. The feed down-weights rays that come off-axis. ...

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• Bandpass and antenna gain calibration
• Frequency Handling
• An alternative approach to calibration

... The plug-plates of SDSS project are responsible for locating the optical-fiber plugs spatially and for defining the plug tilt with respect to the surface of best focus. ... Previous attempts to match the SDSS plug-plates to the surface of best focus were conducted using only the bending fixture. The analyses performed indicated that by adding a central constraint to the plug-plate deformation process, the plates could be made to match the surface of best focus within an acceptable range of error. ...

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• Primary mirror support
• Focus sweep data
• Hipparcos Tycho catalog

Astronomy Picture of the Day . Mercury's Surface in Exaggerated Color . ... Credit Copyright: NASA / JHU APL / CIW Explanation: The robotic MESSENGER spacecraft recently completed over 100 orbits of Mercury . ... Otherwise, to the unaided human eye, Mercury's surface colors would appear comparatively muted . ... Publications with keywords: Mercury - Mercury program - Mercury surface - Messenger - color . Publications with words: Mercury - Mercury program - Mercury surface - Messenger - color . ...

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• XWare > APOD

Ice Volcanoes Reshape Europa's Chaotic Surface . Ice-spewing volcanoes and the grinding and tearing of tectonic plates have reshaped the chaotic surface of Jupiter's frozen moon Europa, images from NASA's Galileo spacecraft reveal. ... Although the images do not show currently active ice volcanoes or geysers, they do reveal flows of material on the surface that probably originated from them, said Galileo imaging team member Dr. Ronald Greeley of Arizona State University, Tempe. ... Europa . ...

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• Saturn's Moon Enceladus
• APOD: June 5, 1999 - Betelgeuse, Betelgeuse, Betelgeuse
• APOD: 2000 February 13 - Southwest Mercury

... There are several classifications of the exact methods. ... A more physical classification is that of Th.Wriedt (1998) where he devides the methods in 3 groups: Mie theory expansions (SVM), surface-based (PMM, EBCM, GMT, MoM) and volume-based (FDTDM, TLMM, FEM and various volume IEMs - CDM, DDA, etc.) methods. Features of the methods . Among the methods only SVM and EBCM are capable to provide very accurate results (5 and more correct decimals) (Mishchenko et al., 2000). ... 1998) Part. ...

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• Database of Optical Properties -- Level: subsubpage
• Database of Optical Properties -- Level: subpage
• Nebular Abundances For PNe of Different Central Star Masses

... Low Polar Orbit . ... Different types of satellite orbits have different uses: while the synchronous orbit is best for communication satellites, Lagrangian point orbits help monitor the solar wind before it reaches Earth. ... Many spacecraft use such orbits, e.g. the US Air Force surveillance satellites of the DMSP series, or the series of French Earth-resources spacecraft SPOT . ... If the satellite then starts near a noon-midnight orbit, it will always pass near noon and near midnight. ...

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• Spacecraft Digital Imaging Cameras
• Martian mini station (MMS)
• Lidar homepage - Project news

... Billions of years ago the surface of Mars looked very different than it does today. Where there is now only a dry red desert, there was once an vast ocean that covered about 20% the planet's surface. That means it covered more of the surface of Mars than the Atlantic Ocean covers on Earth! ... So, by looking at how much heavy water is in Mars' atmosphere in comparison to the lighter kind, we can tell how much normal water the planet has lost into space. ...

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• ESO - I want to process MOS data of the same target from different nights
• ESO - Why do the flats in my data have different exposure times and how do I
• Different X-ray Spectra

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The number distribution is shown in the middle panel. The right panel illustrates the distribution of chirp mass due to different DWD types, normalized by the total number (2.76†Ч108) of DWDs in the Galaxy (bin size M = 0.001M ? ... The frequency spectra of DWD strain amplitude and number distribution are presented as a function of galactic component, DWD type, formation channel, and metallicity. тИТ4.5. ...

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• The Evolutionary Status of RCBs
• THE EVOLUTIONARY STATUS OF RCBS
• Influence of Climate Variables on Tree-Ring Widths of Different Species

... ON THE ROLE OF LARGE-SCALE PLASMA IRREGULARITIES AT THE FINAL STAGE OF ANOMALOUS ABSOPTION DEVELOPING UNDER HF HEATING OF THE IONOSPHERE . ... Fig. ... With the aid of numerical statistical modeling based on multiple ray tracing it is shown that in presence of large-scale irregularities the reflected signal amplitude mean value is increased significantly. ... Dependence of the mean amplitude of the reflected from the ionosphere signal on the large-scale (10-50 km) electron density irregularity level...

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СТАНДАРТНЫЕ МОДЕЛИ СОЛНЦА С РАЗНЫМИ ТАБЛИЦАМИ НЕПРОЗРАЧНОСТЕЙ Standard Solar Models Using Different Opacity Tables Abstract. ... Остальные физические данные (кроме непрозрачностей) одинаковы для всех моделей: уравнение состояния MHD (D.G.Hummer, D.Mihalas 1988, Ap. ... Так как таблицы, вообще говоря, трехмерны (температура T, плотность r и один параметр химического состава, обычно содержание водорода X), то приведены лишь значения вдоль профиля (T, r, X) из модели M-IR91. ... Модель Непр. ...

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• http://crydee.sai.msu.ru/ftproot/pub/local/science/publications/circ.94/circ94.txt
• Introduction
• Analysis of a multiperiodic signal

RTT150 . ... This optical scheme is similar to 1:7.7 system but has the different parameters of secondary mirror 2 and corrector 3. Primary mirror 1 reflects light to the secondary mirror 2 which collects it on the focal surface of system. Lens corrector 3 is placed between focal surface and the secondary mirror which allows to obtain large flat linear field of 100 mm diameter. Focal length, mm . ... Linear field of view, mm . ... Angular field of view . ... 0.039 mm, %, at least . ...

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... Data may be optionally rescaled. copyheader copy header keywords from one FITS file to another ( see also FTOOL cphead ). copywcs copy just the World Coordinate System keywords from the header of one FITS image to others. fcolappend append a constant column to a FITS table fitsparsename Prints components of the extended FITS file name. fitspha convert ASCII files to FITS PHA ( See also listhead supplied with FITSIO. modifyheader modifies FITS header. ...

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• The AstroStat Slog Blog Archive different views
• Comments on: different views
• Tom's POVRay Fake Wood Texture

TEMPERATURE OF REGOLITH IN COLD TRAPS ON THE MOON A.A. Berezhnoi Sternberg Astronomical Institute Moscow, Russia The hypothesis of the existence of the lunar ice in cold traps was stated in (Watson et al., ... Arnold, 1979) estimated the mean temperature on the surface of lunar cold traps as 40-90 K. We plotted the dependence of regolith mean temperature on depth for these two values of mean temperature on the surface (see figure 1). ... Arnold J.R. Ice in the lunar polar regions, J. Geophys. ...

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• http://selena.sai.msu.ru/Symposium/RadioMoonE.pdf
• http://selena.sai.msu.ru/Pug/Publications/ms34/MS058.pdf
• http://selena.sai.msu.ru/Shev/Publications/ms38/ms082.pdf

. There are several different shells available for Unix; the most popular are described here. You can use any one of these shells if they are available on your system. And you can switch between the different shells once you have found out if they are available. Bourne shell (sh) . C shell (csh) . TC shell (tcsh) . Korn shell (ksh) . Bourne Again SHell (bash) .

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• Using a different printer
• Example of using a different printer
• Different types of file

... Previous: Structure Detection in Low Intensity X-Ray Images using the Wavelet Transform Applied to Galaxy Cluster Cores Analysis . ... It also exploits the PCA's high generalizing ability to implement a simple learning algorithm for sequential compression of remote sensing imagery. ... Growing interest in lossy compression techniques for space-borne data acquisition is explained by the rapid progress in sensors, which combine high spatial resolution and fine spectral resolution. ...

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• Software for Testing and Commissioning the GBT
• The New JCMT Holographic Surface Mapping System - Implementation
• The SAO AXAF Simulation System

INFRARED FOURIER-SPECTROMETER SICH-F . ... Instrument work regimes: 1) Inside. 2) Calibration at inside standard sources 2 - 4 times per a rotation. 3) Calibration at "free space" 2 - 4 times per a rotation. 4) Infrared radiation measuring 10 - 40 min. per a rotation. ... Spectrometer consists of the photodetector block and the block of signal processing and control. ... Diagnostic information and attach data will transfer by state telemetric channels. ... Detector temperature. ...

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• Optical static Fourier spectrometer
• A computer controlled low light photometer for nightglow observations