... Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 . ... Power spectral analysis (PSA) has proven to be an important tool for high spatial resolution measurements from ground based interferometry. ... While many images from HST are far too complicated for PSA, there are a class of scientific problems for which it is a very effective technique for handling the problems created by the HST point spread function. ... Power Spectral Analysis . ...

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• Summary

... Previous: Background Fluctuation Analysis from the Multiscale Entropy . ... A new measure of information is defined which is based on noise modeling and incorporates resolution scale. Properties of this measure are discussed. ... Additionally it allows for image noise modeling, and subsequent noise removal. ... Hence information- and entropy-based processing technologies will be necessary for the effective design and implementation of large, future generation, image databases. ...

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• A New PROS Task for Calculating HRI Source Intensities or Upper Limits
• ISIS: An Interactive Spectral Interpretation System for High Resolution X-Ray
• ADASS 2003 Conference Proceedings

... The remote planet Pluto and its moon Charon orbit the Sun at a mean distance of almost 6,000 million kilometres, or nearly fourty times farther out than the Earth. During a recent investigation by an international group of astronomers [1], the best picture ever of Pluto and Charon [2] was secured with the European Space Agency's Faint Object Camera at the Hubble Space Telescope (HST). ... The new HST image was taken when Charon was near its maximum elongation from Pluto (0.9 arcseconds). ...

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• ESO - Circumstellar Dynamics at High Resolution
• ESO - cal07
• ESO - vo2002

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... This is the first in a series of papers in which we describe and report the analysis of a large survey of Herbig Ae/Be stars in circular spectropolarimetry. Using the ESPaDOnS and Narval high-resolution spectropolarimeters at the Canada-France-Hawaii and Bernard Lyot Telescopes, respectively, we have acquired 132 circularly-polarised spectra of 70 Herbig Ae/Be stars and Herbig candidates. ...

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• Stellar Atmospheres Software
• C.J. Butler, Research Astronomer
• Armagh Observatory Preprint No. ???

... One of the most obvious features of the plasma state is the rich variety of wave motions which plasmas can support. ... Some important wave parameters in general are: . ... The way the dispersion relation is calculated depends on the adopted plasma theory , which also determines the available wave modes. ... the more complicated the medium is, the more wave modes it support (we cannot have, e.g., ion plasma waves if ion motion is neglected in the first place, no matter how hot plasma is considered!)...

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• Drift mechanisms [Oulu]
• Radar aurora [Oulu]
• Oulu Space Physics Textbook

SAI 175 anniversary . ... Moscow University . Search for in SAI Moscow University Search for in Russian astronomical resources . ... SAI Astronomical Databases . ... Browse SAI Software archive(ftp.sai.msu.su) . ASTRONET.RU - Russian Astronomical Network (available in translit also) . ... SAI Supernovae Research Group . ... Department of the Galaxy and Variable Stars (in Russian) . Sternberg Astronomical Institute Seminars . ... All-Russian Astronomical Olympiad (in Russian) . ...

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Fair" UV Coverage for a Multi-resolution John Bunton, CSIRO Telecommunications and Industrial Physics, Australia Introduction If we wish to have a multi-resolution telescope with equal point source sensitivity at all resolutions then we must accept that the baseline distribution of the correlations is predetermined. ... This occurs for each added step in resolution. ... It is seen that for the combined telescope the total number of correlations is 5.17 times the number needed for a single resolution. ...

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• PPTA Wiki | Projects / Tnoise
• ATNF Miriad Data Reduction Software
• Dynamical Effects

... Primordial theory review : Dick Bond . Defects and the CMB review : Andy Albrecht . ... Gravitational wave contribution to CMB anisotropies : V.B. Lukash and E.V. Mikheeva . C_l from cosmic strings : Lloyd Knox . Some aspects of CMB anisotropies induced from topological defects : Mairi Sakellariadou . ... CMB anisotropies from scaling sources : Ruth Durrer . ... SZ observations I : Sarah Church . ... Holes in the microwave sky? ... Detecting cosmic strings in the CMB : James Robinson . ...

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• NVSS Source Search ($Revision: 1.6 $ - running v2.17)
• casata: CASA Tools for Analysis Bojan Nikolic web pages (r. 329)
• OptInt PmWiki : MROIFastTipTilt / Tech Meet 11

Effective immediately, most commercial advertising on Astronomy Net is handled through Google Ads. Click on the "Advertise on this site" link on any of those Google ads to find out more. ... The Google advertising statistics reveal the Astronomy Net effective CPM range from $2 to $15 depending on web site page. ... That may be great for some sites, but do not expect your targeted ads to ever show up on Astronomy Net as these ads must compete with the "Keyword Targeting" ads. ...

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• Communications For Your Astronomy Event - an Astronomy Net Article

... Meta Index / Home Page / Description / Soft flare rejection for . The EPIC-pn fast timing mode was designed so that a time resolution of 0.029 milliseconds can be achieved. ... Below this energy the data is affected by so-called soft flares which are caused by stack overflows generated by high energy particles. These so-called soft flares have sharp rise (from 0 counts/sec to several thousand counts/sec in 0.10-0.15 sec) then decaying back 0 counts/sec slightly slower in about 0.3-0.4 sec). ...

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• Cross References to In-Flight Calibration Targets
• Caveats
• Generation from In-Orbit Data

Arecibo and High Resolution Astronomy ­ A Few Discussion Points T. Ghosh, C.J. Salter, & E. Momjian 1 Intro duction Charting the course of VLBI science in the US for the decade of 2010, the Taylor and Lonsdale Committee (2004) noted, "Provided certain highly cost-effective steps are taken, the scientific reach of the VLBI technique will lengthen dramatically within 10 years. ... 4 Widefield Mapping - AO Multib eam VLBI? ...

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• Wapp Home Page
• Arecibo Observatory L-Wide Band Receiver
• Jodrell Multi-beam Virgo Survey

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. ...

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• Practical Astrophysics
• ION AND ELECTRON ENERGY DETECTOR PAN-2
• SPECTRUM ANALYZER OF MAGNETIC PHENOMENA SAMW

Smithsonian Astrophysical Observatory Memorandum To : From Date: Re: M. Cappi, Strong Gravity SDT/YB Team, XMS team : M. Garcia April 14, 2010 XMS high/mid/low resolution event rates for bright AGN mrg-2010-02v2 This memo arises out of the concern that the bright AGN that will be used to observed strong gravity effects ­ in particular those for which time-resolved measurements of test particle orbits will be made ­ may generate counting rates in the XMS that are sufficient to overwhelm it. ...

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• Introduction
• Period Criteria
• The AstroStat Slog Blog Archive [ArXiv] Matching Sources, July 11, 2007

... According to the most popular cosmological paradigm, the greater part of the galaxy mass is accumulated in the dark matter halo. ... The polar ring galaxies (PRGs) reveal external rings or disks of gas, dust and stars rotating in a plane roughly perpendicular to the disk of the central galaxy. ... The shape of the dark halo in the model was chosen so as to achieve the best fit to the observed rotation of both galaxies themselves and their polar rings. ... The SPRC-7 galaxy. ...

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• SAO RAS home page
• Speckle interferometry of magnetic stars
• Radio telescope short description

Next: References Up: No Title Previous: Scientifically discovered God . What does it mean, God being discovered scientifically, or Superintelligence? And what is the future science dealing with an endlessly complicated world? ... But a human lexicon has also so important words as ``to understand'' and ``to believe''. ... And how the scientifically discovered God which has been inevitably reached by the modern simple science correlates with the religious God? ...

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• Simple Universe
• Calculation of Binary Neutron Star Coalescence Rates
• The Effect of Relativistic Wind on Accretion Flow Parameters

... Directives | ... Apache HTTP Server Version 2.4 . ... It describes perhaps one of the most important concepts about mod_rewrite - namely, when to avoid using it. mod_rewrite should be considered a last resort, when other alternatives are found wanting. ... Using RewriteMap . ... Note that whether you use RewriteRule or ProxyPass , you'll still need to use the ProxyPassReverse directive to catch redirects issued from the back-end server: ProxyPassReverse /images/ http://imageserver.local/images/ . ...

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• Arcetri Solar Physics Group: High Resolution Studies
• IBIS: Technical Description
• Arcetri Solar Physics Group: Solar Activity

... (degrees) b2 galactic latitude (degrees) sgl supergalactic longitude (degrees) sgb supergalactic latitude (degrees) pgc PGC name *** alphabetical ** ident1 1st name (NGC,IC,UGC,ESO...) *** alphabetical ** pa position angle (N- E) in degrees typ morphological type (e.g. 'E','Sab','SBa','SO') *** alphabetical ** ring 'R' for Ring galaxies, otherwise ' ' (blank) *** alphabetical ** multiple 'M' for multiple galaxies, otherwise ' ' (blank) *** ...

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• Blue Compact Galaxies from the Hambyrg/SAO Survey
• Welcome to the world of Philips Imaging
• CMOS tutorial-radiation

Peremennye Zvezdy", . ... 6, N 33 (2006) . ... USNO-A2.0 1350-13606605, USNO-B1.0 1381-0460341 . ... Several sessions of high-temporal-resolution BVRcIc photometry of V1500 Cyg (Nova Cygni 1975) field were carried out by one of the authors (E.P. Pavlenko) using the 2.6-m Shajn telescope of the Crimean Astrophysical Observatory equipped with an FLI IMG 1001E CCD camera (Litvinchova Pavlenko 2006). ... The distance to USNO-B1.0 1381-0460341 can be estimated as 2400+/-300 pc. ... V1500 Cyg is also shown. ...

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... arXiv.org . astro-ph . ... We fit the near-infrared to radio spectral energy distributions of 30 luminous and ultra-luminous infrared galaxies with pure starburst models or models that include both starburst and AGN components to determine important physical parameters for this population of objects. In particular we constrain the optical depth towards the luminosity source, the star formation rate, the star formation efficiency and the AGN fraction. ...

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• SAI CAS: About the SAI CAS project

In the PROJECT we are using the following peculiar . features of RATAN-600 . ... Brightness temperature sensitivity being equal to the antenna temperature sensitivity .. ... Receiver system .. ... Using aperture averaging effect. dual- beam and dual (multi-) frequency filtration, we demonstrated full filtration of the atmosphere noise down to the receiver noise at all scales of acoustics peaks ( Fig.1 , Fig 2 ). ... We select this frequency as the central one in our project. ... Antenna surface . ...

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• Spectral energy distribution
• Using Ceilidh as a Student
• Cosmic Phys Rus