... HST . ... The resolution element (one diode) for GHRS was matched to the width of the SSA. ... Since an SSA spectrum is the best resolution we can obtain with GHRS, it is useful to describe the LSA LSF in terms of the SSA PSF. Consequently, we have measured the LSA-SSA differential LSF for a number of gratings and at a sample of wavelengths. ... Since the SSA and differential LSF are Gaussians, we obtain an LSA LSF that is also a Gaussian with a FWHM that is slightly greater than that of the SSA. ...

... 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. ...

... India (1999) xx, PINTofALE: Package for the Interactive Analysis of Line Emission V.Kashyap & J.J.Drake Center for Astrophysics, Cambridge, MA 02138, USA Abstract. ... It is based on a modular set of IDL tools that interact with an atomic database and with observational data. ... The package has been extended to handle analysis of high­resolution X­ray spectra that will be obtained with the Chandra X­Ray Observatory. Key words: X­rays, X­ray Spectroscopy, Stellar Coronae, Analysis Methods 1. ...

... 237S (SIMBAD/NED BibCode) ================================================================================ Keywords: Sun: UV radiation - atmospheric effects - Sun: atmosphere - lines: identification Description: An ultraviolet atlas of the solar spectrum with a spectral resolution of 15mA in the region 1948-2000A is presented. ... The wavelength atlas with a list of about 550 lines has been synthesized from data at center of the Sun ({mu}=1) and at {mu}=0.89, smoothed out over an area of 30 arcsec. ...

Electron-Bombarded, Back-Illuminated CCD Sensors . ... EBCCD PERFORMANCE: Resolution and CTF . ... Measured CTF for an SI502AB back-illuminated CCD, a GaAs SI502AB EBCCD, . ... Figure 8 depicts each sensor's measured CTF. ... The EBCCD's CTF is only slightly lower in contrast than the back-illuminated CCD's CTF and, depending upon the spatial frequency of interest, is 20% to 100% higher in contrast than the ICCD's CTF. ... Measured CTF for GaAs SI502AB EBCCD #A (1.8 keV) and SI502AB ICCD using a . ...

Full Stokes 327-MHz Continuum Observations of the GALFACTS Pilot Region Wasim Ra ja, Avinash Deshpande, Tapasi Ghosh, Chris Salter & Andrew R. Taylor Background and Scientific Justification Several existing surveys have mapped the polarized intensity of the extended Galactic emission at various frequencies using single dish as well as synthesis imaging. ... The underlying distribution of the polarized emission and the magneto-ionic medium would be apparent in the images resolved across Faraday depth. ...

... Дни открытых дверей к юбилею САО РАН (12-14 апреля 2016 г.) . Международная конференция "Dark Ages and White Nights (Spectroscopy of the CMB)" (20-24 июня 2016 г.) . ... Международная конференция MULTI-SPIN GALAXIES - 2016 (26-30 сентября 2016 г.) . Международная астрономическая конференция "Физика звезд: от коллапса до коллапса" (3-7 октября 2016 г.) Архив . ... Подробнее.. ... 10.02.16 . ... БТА в реальном времени . ... Цейсс-1000 в реальном времени . ... Последнее обновление: 22/03/2016 ...

... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...

... 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. ...

ATM Forum Message . Forums: . ... Post . ... Measuring Resolution . ... Post Message | ... Posted by Amanda on April 20, 2007 22:08:30 UTC . ... resolution - rick_crockett - April 25, 2007 - 08:46 UTC . resolution - aschilli - April 30, 2007 - 00:08 UTC . Indoor resolution - rick_crockett - June 2, 2007 - 07:04 UTC . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

... Science . ... Science Users Information > Science Publications > Science Announcements > New GIRAFFE Spectral Resolutions Characterised For All Settings . ... ESO Data . ... The spectral resolution characterisation has been completed for all grating settings and the new resolving powers are listed under the FLAMES News . ... In some settings the spectral resolution is much higher, and in almost all HR settings there is an increase of 20-30% with respect to the values before the February intervention...

... 1 SRCNUM none . 2 XPOS pixels x-coordinate of centroided source centre . ... 5 RATE counts/sec Total measured source counts within measurement aperture divided by exposure time . ... 9 CORR_RATE counts/sec RATE after extrapolating (if neccesary) to an aperture radius of 12 unbinned pixels and correcting for coincidence losses. ... 11 CORR_BACKGROUND_RATE counts/sec BACKGROUND_RATE after extrapolating (if neccesary) to an aperture radius of 12 unbinned pixels and correcting for coincidence losses. ...

HIGH RESOLUTION IONOSPHERIC MASS SPECTROMETER P-11 . ... Onboard mass-spectrometric equipment for study of neutral and ionized components of Earth upper atmosphere. Mass-spectrometer P-11 is one of P-series modifications of the on board radio-frequency monopole spectrometers. ... The instruments of P-series have passed successful approbation in space experiments aboard geophysical rockets MP-12, launched for investigation of Earth upper atmosphere (Ref. ... Measured mass number range, AMU - 1.. ...

... INTRODUCTION This data set contains fluxes and pitch angles (relative to measured magnetic field) of protons and electrons as measured in the lower half of the energy steps of the electrostatic analyzers, that is, at "<10 ev," 40 eV and 0.76 keV, 60 eV and 1.2 keV, and 100 eV and 1.8 keV. ... In the data files the values of the particle number flux is given in the data columns in units: particles per square cm per second per steradian per keV. ... FILES AND FORMAT DESCRIPTION 3.1. ...

Report on the ALMA / Herschel Synergy T. L. Wilson European ALMA Project Scientist, ESO, Garching ESA-ESO Meeting , Feb 10-11 , 2005 Contributors (so far) P. Andreani (Trieste) D. Bockelee-Morvan (Paris) J. Cernicharo (Madrid) P. Cox (Grenoble) C. De Breuck (ESO ... Fosbury (ECF-ESA/ESO) R. Laing (ESO) E. Lellouch (Paris) G. L. Pilbratt (ESA) P. Schilke (Bonn) C. Waelkens (Leuven) M. Zwaan (ESO) ESA-ESO Meeting , Feb 10-11 , ...

... Class . Use . ... Packages that use Measurements . ... Uses of Measurements in ij . Classes in ij that implement Measurements . ... This is an extended image class that supports 8-bit, 16-bit, 32-bit (real) and RGB images. ... Classes in ij.gui that implement Measurements . ... Classes in ij.macro that implement Measurements . ... Implements ImageJ's Process/Enhance Contrast command. class . ... This plugin implements ImageJ's Analyze/Measure and Analyze/Set Measurements commands. class . ...

Subatomic resolution on Cu(014)-O . 3nm x 3nm STM image of the Cu(014)-O 0.5ML surface measured with MnNi tip. ... This result has been discussed in Phys. Rev. Letters, 98, 206101 (2007) (A.N.Chaika, V.N.Semenov, S.S.Nazin, S.I.Bozhko, S. Murphy, K. Radican, I.V.Shvets, "Atomic Row Doubling in the STM Images of Cu(014)-O Obtained with MnNi Tips"). Image courtesy of A.Chaika. The image was measured in constant current mode using RT STM GPI-300. Copyright ИФТТ РАН, ЛСПП, 2006-2007 . ...

... Neutral hydrogen is the best tracer of accreting and outflowing gas, however very hard to detect due to its low column density. ... Simulations predict that in order to detect HI in the extended environment of galaxies, brightness sensitivities well below NHI ~1018 cm-2 are required (e.g. Popping et al. ... Direct aims of the projects include: - Achieve a 1 sigma NHI of 2.5x1017 cm-2 over 20 km/s. - Measure the extended gas content of galaxies to detect gas accretion and outflows. ...

To main of Laboratory . The research work and design of optical and optical-electronic devices are carries out by laboratory staff: . ... Lens: . ... In the layout 1 prism systems perform functions of dispersive element, corrector of aberrations, optical reducer. ... Spectral range 200 - 400 nm; . ... Back Forward . ... The main corrector's function are compensation of field aberrations of the main spherical mirror of a telescope (diameter of 600 mm, f'=1200 mm) and increase aperture ratio. ...