... The PGPLOT library routine PGIMAG is used to plot the image. The WCS library of Mark Calabretta is used to compute and plot the optional celestial coordinate grid (or tick-marks). read parameters; load the image ; find all null-valued pixels and set them to the minimum non-null image value; if (--withzclip) { calculate the effective minimum and maximum image values effMin and effMax by histogram clipping; } else { effMin = minval( image ); effMax = maxval( ...

... This paper describes the main algorithms used by the Einstein Level One processing to create the exposure masks and the background maps for Einstein IPC images, and how these algorithms were recreated in the IRAF environment. Our goal was to recreate the algorithms used by the Level One Processing to create exposure masks and background maps for Einstein Image Proportional Counter (IPC) data (cf. sections 2.5 and 2.7 of Harnden et al. ...

... Update to the COS FUV Dark Rates and Impact on ETC Calculations for Background Limited Observations . ... http://www.stsci.edu/~COS/fuv_darks/dark_vs_time_FUVA.png . http://www.stsci.edu/~COS/fuv_darks/dark_vs_time_FUVB.png . The ETC value for the COS/FUV detector dark rate is 4.0x10-6 counts/s/pixel for both segments. ... However, proposers considering COS/FUV observations of faint, background-limited targets may want to adjust their ETC calculations to use the lower background rate. ...

This diagram shows the six superimposed "layers" of the CSS table model. This diagram illustrates the algorithm for calculating a cell's final background. ... The diagram shows how, looking down on the six rectangles, one may compute the background color of each cell. ... A cell without a background color in the top layer is depicted as a "window" onto the lower layers, which give its final background color. ...

Next: Photometry Up: Regions and Source Parameters Previous: *imcnts* - Find counts . This task (developed for use with optical images, but also useful with x-ray data) will quickly compute location, size, ellipticity, and position angle of sources. ... User can generate contour plots of any portion of the image and count rates in slices through the image. The program is advertised as ``quick [optical] photometry''. input file: rp110590_im1.imh . output file: logfile . ... Photometry . ...

Next: The STScI NICMOS Calibration Up: No Title Previous: CONICA: The high resolution . The STScI NICMOS Calibration Pipeline . Introduction . ... Dark Current Subtraction . ... Input Data . ... Scalar Background Subtraction . 2-D Background Subtraction . ... Status and Goals of the NICMOS Calibration Plan . ... Photometry . ... Photometric Performance of NICMOS . ... NICMOS Photometry. ... ST-ECF Grism Spectrum Software for NICMOS Grism Data . ... Analysis . ... STScI NICMOS Software . ...

... Bojan Nikolic web pages (r. 329) . ... Analysis of (radio) spectra . I describe an approach to fitting and comparison of radio spectra based on Bayesian analysis and realised using a new implementation of the nested sampling algorithm. ... I this paper I cover the theoretical background, the algorithms used and the implementation details of the computer code. I also briefly illustrate the method with some previously published data for three near-by galaxies. ... Paper I: Method . ...

Chair of solid state physics . ... The most important concepts of the modern crystallography, crystal symmetry and methods of crystal structure determination are considered. ... The main experimental aims of X-ray diffraction study of classic crystal structure and real structure are analyzed. ... Crystal lattice. ... The main diffraction schemes in representation of a reciprocal lattice: Laue method, powder diffraction method, oscillation method, X-ray diffraction on powder sample and single crystal. ...

Tail Probe is one of the satellites of the INTERBALL program. ... Collection of the orbital elements | ... Flight situation analysis during operations scheduling . ... Two stages of the orbital situation analysis are presented: . ... The satellites motion calculation during the flight situation analysis is based on the orbital elements, determined by the Ballistic center at KIAM RAN. The modified (by backward integration) orbital elements are usedduring the aposteriory situation analysis. ...

... PPTA timeline . ... List of projects . ... RedGW . ... One of the main goals of pulsar timing array projects is to limit the existence of a background of gravitational waves (GWs). Jenet et al. (2006) developed a method to determine such a limit if (and only if) the pulsar timing residuals were statistically white. In the paper we used data from six pulsars from the PPTA project to obtain a limit. The remaining pulsars were rejected because their timing residuals were not white. ...

Next: Fitting of data Up: Extraction of Information Previous: Extraction of Information . For projects which perform statistical analysis on groups of objects, it is important to rely on an objective search method to extract them from the data frames. ... The simplest and fastest method is using a given level over a previously determined background value as the criterion to identify possible sources. ...

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

... Division , Virginia Polytechnic Institute, Blacksburg, VA, 1954-1955; College of William and Mary, Williamsburg, VA, 19591961 PRE- NASA EXPERIENCE: National Advisory Committee for Aeronautics, Langley Aeronautical Laboratory, Langley Field, VA (1954-1958) · Aerospace Technologist, Fluid and Flight Mechanics Branch (1954-1958) NASA Langley Research Center , Hampton, VA (1958-1961) · Aerospace Technologist, Fluid and Flight Mechanics Branch (1958-1961) · Transferred to ...

... This page contains pictures and text to accompany the press release entitled "some black holes are pink", which was presented as part of the Fresh Science event, ScienceNow! ... I first show colour pictures of the pink black holes (and of some blue and yellow ones for comparison. ... If you are having this trouble, I've included pictures below with stretched colour maps, to emphasise the colours: these should print better. (jpeg image, 29kb) . ... Quasar (black hole) PKS 1133-172. ...

... PUL VLBI Analysis Center . ... Pulkovo EOP and Reference Systems Analysis Center (PERSAC) is located at the Pulkovo Observatory . ... Processing of VLBI , GPS, and optical observations aimed at analysis of the Earth rotation, station displacement, and celestial reference system. ... Celestial Pole Offset (CPO) and Free Core Nutation (FCN) . Four daily updated CPO and FCN series (models) are provided. ... File fcn1.dat contains the ZM1 FCN model with variable amplitude and phase. ...

Next: Evolution of Supernova Explosion Up: Gravitational Waves from Coalescing Previous: Gravitational Waves from Coalescing . The stochastic binary background produced by nearby galaxies from Tully's catalog at the frequency  Hz is shown in Figure  49 in terms of average strain metric amplitude per square degree in a given direction ( l , b ) on the sky: . where the sum is calculated over all sources in the given square degree of the sky; we assumed . ...

... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Foreground emission and Cosmic Microwave background intrinsic anisotropies . ... Since its discovery the Cosmic Microwave Radiation (CMB) has been one of the pillars of modern Cosmology. ... Further development of this work is the application of already tested algorithms to disentangle the foreground emission from the CMB maps and the determination of the CMB intrinsic emission. ... Return to list of thesis topics ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . ... The software run under Windows 95, 98 NT, including Paraxial and Seidel . ... and Energy Distribution, Optical Layout, Optimization, Tolerancing etc. ... Listed Since August 20, 2005 . ... Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Krasinsky G. A. Diurnal pole tides and determination of static and dynamic Love numbers from analysis of VLBI observations 1998 - 2001. Ключевые слова: вращение Земли, геодинамика, числа Лава. ... Полученное значение 19 1 mm статически значащим образом отличается от теоретического значения 12.2 mm, рекомендуемого Стандартами Международной службы вращения Земли IERS Conventions (1996). ... Для статических чисел Лава h 2 , l 2 найдены оценки: h 2 = 0.626 0.001, l 2 = 0.0922 0.0005. ...

... The Cosmic X-Ray Background . ... Now, peering through a hole in the obscuring gas and dust of our own Milky Way Galaxy, the powerful orbiting XMM-Newton telescope has recorded this deep image of the x-ray sky , resolving some of the mysterious background into many faint individual sources. ... Do massive black holes reside in the hearts of all large galaxies? ... Publications with keywords: black hole - XMM-Newton - x-ray background - cosmic microwave background radiation - X-ray . ...