... Next: The PROS Big Up: Software Systems Previous: Data Reduction Software . ... The srcinten task provides PROS users with a tool to compute count rates for point sources in the ROSAT High Resolution Imager (HRI). ... Corrected upper limits are cited at locations where the count rate falls below the source detection threshold. ... Srcinten is a new PROS task that computes and applies the above correction factors to the net counts in a user-specified aperture. ...

Next: Noise Amplification Up: Image Restoration Using the Previous: Image Restoration Using the . The Richardson-Lucy (R-L) algorithm (Richardson 1972, Lucy 1974) is the technique most widely used for restoring HST images. ... The R-L iteration converges to the maximum likelihood solution for Poisson statistics in the data (Shepp and Vardi 1982), which is appropriate for optical data with noise from counting statistics. ... The imaging equation tells how the true image is blurred by the PSF: . ...

ABSTRACT . Single electron detection is desirable in systems incorporating EBCCDs. The sources of noise in single electron counting are discussed and an expression is given for the total noise. INTRODUCTION . Electron bombarded charge coupled devices (EBCCDs) have been recognized as having performance advantages over competing technologies in terms of their high sensitivity, low noise and high spatial resolution. ...

The Wideband Arecibo Pulsar Processor Signal Processing Page . ... Raw Correlation . ... The WAPP uses custom digital hardware to create estimates of correlation functions from sampled data. The digital hardware used to estimate correlation function uses quantization to represent input . After creating an estimate of input correlation functions, the Wiener-Khintchine Theorem is applied to create estimates of input Power spectral density (PSD) and Stokes parameters . ... 3 Level . ...

This section describes how to reduce Hydra Cal data into .cal files and then into an .scal file. Cal files just give the system and cal counts on a given patch of sky. scal files give the conversion factor between the cal and Jy. When reducing pulsar observations the software requires an observation of Hydra and a calibration near the pulsar observation. ... This should create a .cal file and move it into $calpool (the directory pointed to by the calpool environment variable). ...

... In the USA it was called space Shuttle system. ... NPO MOLNIYA was founded on the basis of two design bureaus: BUREVESTNIK (Chief Designer A. V. Potopalov) that had experience in the creation of heavy supersonic aircraft and anti-aircraft missiles and MOLNIYA (Chief Designer M. R. Bisnovat) which developed unmanned flight vehicles and an Experimental Machine-Building Plant (General Designer V. M. Myasischev) where heavy and high altitude aircraft were designed and tested. ... Buran Orbiter . ...

Next: IRAF/PROS Up: PROS USERS GUIDE Previous: Contents . This guide is designed to aid the new user in deriving scientific results from reduced x-ray data using the SAO PROS software system which runs under IRAF as package ``xray". ... If you are using the IRAF/PROS system at SAO, you will find the siteguide , by Belinda Wilkes, a useful guide to site-specific procedures. ... Spatial analysis . ... Next: IRAF/PROS Up: PROS USERS GUIDE Previous: Contents rsdc@cfa.harvard.edu . ...

... Circle rotations. ... Symbolic dynamical systems: sequence spaces, Markov chains, adding machines. Birkhoff recurrence theorem. ... Tent map. ... Expanding maps of a circle. ... Topological entropy. ... Finiteness of entropy for Lipschitz self-maps. Entropy for symbolical dynamical systems. ... Entropy for one-dimensional maps. Entropy for expanding maps and the Misiurewicz-Przytycki theorem. ... Structural stability of expanding circle maps. ... SRB measures for expanding maps. ...

... Bojan Nikolic web pages (r. 329) . ALMA . ... These errors are due to the refractive effects of the Earth?s atmosphere, specifically due to the (tropospheric) water vapour. ... Making use of information on baselines this long will require very accurate calibration and correction of atmospheric phase errors. ... The design of the ALMA phase correction system is summarised in Nikolic et al 2013 . Introduction to phase correction for ALMA . ALMA Goals . ALMA Phase correction strategy . ...

The list of "Project Team" CMBA experiments, 1968-1998 . ... J.Silk predictions for protogalaxies . Anisotropy by factor 10 less than predicted . ... Ya.Zeldovich pankaces and Daucourt grav. noise predictions . less than predicted . ... Better agreement, but less than predicted by factor 2 even for very late epoch of the galaxies formation . ... Development of the "Sakharov oscillations" ("Cosmological Gene") project at RATAN-600 using near field zone atmosphere filtration theory . ...

... To create a .inch file from a .con file, startup INCHWORM and then type inchworm inch1 /gemini/npoi/con/2003-03-15.con -dir . ... Then open the file and go to Raw ScanData , double click on sid 1, and go to Edit De-glitch . ... Fix every glitch listed by double-clicking the glitch and then, judging by the plot, the laser which glitched. ... After fixing all glitches, go to Average , (Re)create ScanData , then Calculate By Time , then Calibrate and then Done . ... To exit, go to File Done . ...

... Discovery of the Radiation Belts . ... Early US magnetospheric research was mainly focused on the Earth's radiation belts, discovered by Van Allen and his colleagues in the spring of 1958. ... Sputnik 1 was launched October 4, 1957, followed on November 3 by Sputnik 2; Explorer 1, the first successful US spacecraft, was launched January 31, 1958, and Explorer 3, by which the radiation belt was discovered, was orbited March 26. ... That was how the radiation belt was discovered [ Van Allen et al. ...

... Discovery of the Radiation Belts . ... Early US magnetospheric research was mainly focused on the Earth's radiation belts, discovered by Van Allen and his colleagues in the spring of 1958. ... Sputnik 1 was launched October 4, 1957, followed on November 3 by Sputnik 2; Explorer 1, the first successful US spacecraft, was launched January 31, 1958, and Explorer 3, by which the radiation belt was discovered, was orbited March 26. ... That was how the radiation belt was discovered [ Van Allen et al. ...

... It lists the coefficients defining the colour transformations, the zero points for the different filters and the aperture radii used in the photometric calibration analysis. ... The AB system zero point of the filter FilterID is stored in the keyword ABM0 FilterID , e.g. the AB zero point of the the U-filter is stored in ABM0U. The flux conversion factor derived from White Dwarfs of the filter FilterID is stored in the keyword FCF FilterID . ... description . ... AB Flux conversion factor of U . ...

... And count to a hundred by fives. ... 85, 90, 95, 100, ready or not, here I come. ... Aw, alright, I'll count it again, but ya better get hid, kid. ... Five times twenty is one hundred, . ... Count on your fingers, one finger . ... You got four fingers, see, that means four times five . ... Seven fingers, that's right, seven times five is 35. ... That's twelve fingers, 12 times five . ... Ok, now let's do one more game of counting by fives on our fingers. ... Cause five times 20 is 100, . ...

... For this purpose, catalog entries for stars within 12њx6њ region centered at 12h 20m right ascension and 33њ declination were examined. ... In Figure 1, the distribution in Johnson V magnitude of all Tycho catalog entries for stars within 12њx6њ region centered at 12h 20m right ascension and 33њ declination is plotted . ... Figure 1 : Distribution of magnitude in Johnson V. This is for the 510 stars from the Tycho catalog in a 12њx6њ area in the center of the northern survey region. ...

Next: NICMOS Coronagraphic Surveys-Preliminary Results Up: No Title Previous: STScI NICMOS Software . NICMOS Coronagraphic Surveys-Preliminary Results . ... Observations with NICMOS . ... The Evolution of Stars seen with ISOCAM - the Need for NICMOS and VLT Follow Up. ... Results . ... The Formation and Evolution of LMC Rich Star Clusters: NGC 1818 . ... HST-NICMOS Observations of Galactic Bulges: Red Nuclei in Nearby Galaxies . ... Investigating the Evolution of Quasar Host Galaxies with NICMOS . ...

The HyperNews Linux KHG Discussion Pages . Forum: The Linux Kernel Hackers' Guide . Keywords: network interface counters . Date: Fri, 03 Oct 1997 22:10:44 GMT . From: Keith Dart < kdart@cisco.com > . Is there an ioctl or some other way to reset the network device counters (as shown in /proc/net/dev) to zero? . TIA, Keith Dart .

Subject of Astronomy. ... Celestial Sphere. ... Spherical Frames of Reference: Horisontal and Equatorial Coordinates, Ecliptical System. ... Transformation of Celestial Coordinates. ... Change of Object Coordinates as a Result of Diurnal Rotation of Celestial Sphere. Phenomenons, Which Lead to Celestial Coordinates Change. ... Motion of Equator, Ecliptic, and Their Poles. ... Diurnal Solar Motion on Different Latitudes. ... Time Equation. ... Apparent Motions and Configuration of Planets. ...

GiST home | Introduction | ... GiST is a height-balanced tree structure with tree nodes containing (p, ptr) pairs, where p is a predicate ( attribute ),which is used as a search key, and ptr is the pointer to data for a leaf node or a pointer to another tree node for a non-leaf node. ... Every node contains between min and max index entries unless it is the root . ... For each index entry (p, ptr) in a non-leaf node, p is true when instantiated with the values of any tuple reachable from ptr . ...