Next: Results Up: High Resolution Measurements from Previous: Introduction . The first step in PSA is to Fourier transform the image and calculate the square modulus of the FT to generate the power spectrum, . ... Specifically, one excludes the very lowest frequencies where the large scale nonuniformities in the image have the greatest effect, and one limits the fit to a frequency range where the SNR is sufficiently high. ...

... The improvement will be more pronounced in our crowded Wide Field Camera (WFC) images, and may be increased further through use of a more sophisticated method of combining the individual dithered images. Our analysis allows us to check for point spread function shape variations in the HST Planetary Camera (PC) field. ... In crowded field images, we are deriving information about the faint end of the luminosity function (LF) from the texture of the image background. ...

... This will only be implemented at a later time, if in-orbit experience warrants it. rgsoffsetcalc accepts a list of DIAGNOSTIC datasets (refer to the ODF ICD [ 1 ]. For each DIAGNOSTIC dataset rgsoffsetcalc calculates the mean and standard deviation of the pulse height distribution. ... Optionally, rgsoffsetcalc can store the pulse height distributions for each input dataset and node in a dataset (see the description of withhistogramset and histogramset ). ...

MAGION 5 is subsatellite of the Auroral Probe, one of the satellites of the INTERBALL program. ... Click hear for the 1999 flight situation analysis during operations scheduling . ... The satellites motion calculation during the flight situation analysis is based on the orbital elements determined by the Institute of Atmospheric Czech Academy of Sciences. ... SSC GSFC NASA Satellite Situation Centre of the NASA Goddard Space Flight Centre . ... Space Research Institute (IKI) . ... IKI RAN | ...

... The Arecibo 430 MHz radar uses incoherent scatter to determine the characteristics of the ionosphere. It is part of a chain of incoherent scatter radars operated by the Upper Atmospheric Facilities program of the National Science Foundation with strong links to the CEDAR program and the National Space Weather program. ... The Arecibo radar is extremely powerful and sensitive; it is capable of making very accurate measurements of many ionospheric parameters. ...

... 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. ...

... User Guide ] Task: zeemap Purpose: Map the magnetic field from I and V cubes Categories: profile analysis ZEEMAP tries to find the line-of-sight magnetic field splitting a transition by measuring the shift in the line owing to the Zeeman effect. ... Key: b Output file name for line-of-sight magnetic field. Key: d Output file name for the derivative of I/2 spectrum (op=div only). ... Key: g Output file name for amount of residual I found in V (op=fit only). ...

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

... Obviously, the size of the cavern is of the order of the Schwartzman radius. ... Thus, consideration of the inverse effect of pulsar radiation on the properties of accreting plasma makes the ejection possible even when the Schwartzman radius is smaller than the capture radius. ... If the cavern radius , the condition at its boundary can be written as . ... Apart from magnetic dipole radiation, the cavern may also contain relativistic particles (which are also reflected from the cavern boundary). ...

SPIE 2008 :: Observatory Operations :: 7016-23 :: 16:20 Wednesday 25 June 2008 How to handle calibration uncertainties in high-energy astrophysics Vinay Kashyap SPIE 2008 :: Observatory Operations :: 7016-23 :: 16:20 Wednesday 25 June 2008 How to handle calibration uncertainties in high-energy astrophysics Vinay Kashyap CHASC Astrostatistical Collaboration Chandra X-ray Center Smithsonian ...

Multifrequency Observations of S­Z Effect toward clusters of galaxies M. De Petris et al. ... We describe a dedicated instrument (MITO) consisting of a 2.6­m telescope operating at 3500 m a.s.l. in the 2.1, 1.4, 1.1 and 0.8 mm channels with ё 10% bandwidths. Forthcoming results to­ ward A1656 cluster are reported and discussed in terms of thermal and non­thermal components. ...

reconstruction with Fast Simulation M. Iwasaki University of Oregon At the Sitges meting: tt 6jets 4jets analysis · Charged/Neutral cluster separation with Track- cluster matching · Reconstruction performance in Energy flow analysis · B-tag effect After the meeting: · In FastMC, set the cluster position resolution determined by FullMC · Study Cluster width with FullMC · ...

... High-pressures experiments are mostly aimed at studying phase transformations in solids, synthesising new phases and studying their composition, crystal and magnetic structure, physical and thermodynamical properties. ... The specific feature of investigations at LHPP that distinguishes it from most other high-pressure laboratories is combining in situ measurements with studies at ambient pressure of new high-pressure phases fixed by quenching to liquid nitrogen temperature. ...

. Shell procedures may use the trap command to catch or ignore Unix operating system signals . The form of the trap command is: trap ' command-list ' signal-list . Several traps may be in effect at the same time. If multiple signals are received simultaneously, they are serviced in ascending order. To check what traps are currently set use the trap command. For example: trap . Most common signals to be caught . Handling command lists . Examples .

Next: The Formation and Evolution Up: NICMOS Science Previous: NICMOS Observes the Galactic . ... We have taken diffraction-limited ( 0.15") near-infrared F160W (henceforth H-band, for convenience) images with NICMOS on HST of the center of the R136 cluster (age 3.5 Myr) in the core of the 30 Dor giant HII region in the Large Magellanic Cloud. ... 1996, ApJ 466, 274) can sample only M >2M , while previous V and I band HST images with WFPC2 (Hunter et al. ...

Bar Targets . A limited number of bar patterns may be regarded as a continuous square wave pattern chopped by a rectangular pulse. ... For a 3 cycle target, the single-valued fundamental frequency of the square wave is replaced by a relatively broad band, centered near the fundamental frequency, but slightly below it, and moves nearer to it as the number of bars increases. ... This account is only true if the square wave extends indefinitely. ...

... We present an analysis of an optical blue spectrum of the pulsating helium star V652 Her (=BD+13 3224$) in order to determine its effective temperature, surface gravity and chemical composition. ... The surface composition is characterised by abundances of nH=0.009, He=0.988, nC~0.000040, nN=0.0025 and nO=0.00010 (number fractions). ... If V652 Her was formed by the merger of two white dwarfs, its surface composition demands that they should both be helium white dwarfs. ...

... The effective temperature Te = 13700+ 500 and the surface gravity log g = 3.75 ± 0.25 were determined. ... It is shown that the ionization equilibrium for Fe I - Fe II and Mn I Hn II lines is maintained only for the second, more cool model. Out of 10 considered elements the largest overabundance was found for Mn (2.0 dex ), Ga (4.5 dex) and Hg (5.5 dex) . ... Hence it follows also that Y and Ce overabundance cannot exceed 2.5 dex. ...

... Penn Manor High School, Millersville, Pennsylvania . ... Southridge High School, Beaverton, Oregon . ... Stuyvesant High School . New York, New York . ... John L. Miller Great Neck North High School, Great Neck, . New Yorkl . ... Oil City High School, Oil City, Pennsylvania . ... Troy High School, Troy, Michigan . ... Taipei First Girl High School . ... Mililani High School, Mililani, HI . ... New Milford High School, New Milford, Connecticut . ... Socorro High School, Socorro, New Mexico . ...

NASA JOHNSON SPACE CENTER ORAL HISTORY PROJECT BIOGRAPHICAL DATA SHEET NAME: Larry D. Davis O RAL H ISTORY: 15 February, 28 February 2007 EDUCATIONAL BACKGROUND: B.S. in Engineering Physics, University of Tennessee-Knoxville, Knoxville, TN, 1964 NASA EXPERIENCE: NASA Manned Spacecraft Center /Lyndon B. Johnson Space Center , Houston, TX (1964Current) · Aerospace Engineer, Gemini Trajectory Analysis Section, Flight Analysis Branch, Mission ...