Next: A standard recipe Up: Astrometry data reduction Previous: Dispersion correction Contents . After averaging the point data, the only remaining delay correction is the fringe position of the white light source used to monitor the feed system path length. ... The procedure name is whitecorr . For greater flexibility, the siderostat metrology corrections can also be postponed until after the averaging, in which case they are derived from the averaged XYZ pivot coordinates. ...

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• Discussion of reduction issues
• Astrometry
• Reduce delay data

... Many Miriad tasks support on-the-fly selection and averaging of the channels to be processed. ... Channel-0' data (data formed by averaging all spectral channels together) are also treated as continuum data. ... For the spectral data, if the channel number does not correspond reasonably directly with velocity ( e.g. if Doppler tracking was not used), then it might be desirable to resample the spectral data at equal increments in velocity. ... channel . This gives raw or averaged spectral channels. ...

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• Copying, Concatenating and Averaging Visibility Datasets
• On-the-Fly Calibration Correction
• zeesim

... Bojan Nikolic web pages (r. 329) . ALMA . We present a framework for modelling atmospheric phase errors and their correction by both the fast-switching and water vapour radiometeric techniques. ... We use this framework to simulate relative point source sensitivity and effective resolution for a range of atmospheric conditions, with and without phase correction. ... Published as ALMA Memo #582. ... Simulating Atmospheric Phase Errors, Phase Correction and the Impact on ALMA Science . ...

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• ALMA Phase Calibration Techniques at the Cavendish Astrophysics Group
• Bojan Nikolic -- Memo on inference of phase correction coefficients
• Inference of Coefficients for Use in Phase Correction Bojan Nikolic web pages

The main steps in the reduction of NIR spectroscopic data are flat-field correction, subtraction of sky emission, wavelength calibration, correction for telluric absorption and correction for optical system plus detector efficency. ... Sky subtracted frames are corrected computing analitically the tilt angle from the instrumental calibration parameters or directly measuring it from the data. ... The same procedures are applied to the reference stars frames to obtain the calibration spectra. ...

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... After the wavelength mapping and night sky subtraction, each 2D frame was corrected for atmospheric extinction and was flux calibrated. ... Finally, the 1D averaged spectrum was extracted from a 08 region along the slit, where > 2 ( is the dispersion of a noise statistics around this line) (see Fig. ... For the simultaneous derivation of C (H ) and EW (abs), and to correct for extinction, we used a procedure described in detail in Izotov, Thuan & Lipovetsky ([ 1994 ]). ...

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• Basic Reduction Steps
• Geometric Correction
• Bias correction

... To thoroughly study the reduction problems involved, simulated PC images have been made. ... The images were initially created with four times oversampling, then scaled down to 800 800 pixels, and finally background and noise were added. ... An example of a simulated image is given in Fig. 2, which represents the field seen through the Str?mgren filter (F547M). ... The FWHM of this filter PSF is 0.9 pixels. ... This increased the FWHM of the PSF from 0.9 pixels to 4.3 pixels. ...

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• Comparisons of Implementations
• DAOPHOT Reductions of the Simulated Cluster Field
• Stetson: DAOPHOT Reductions of the Simulated Cluster Field

The tiedown positions needed to correct the current pitch, roll , focus errors are shown in: tiedown positions to correct for pitch, roll, and focus. ... Redrill the mount points to just correct the average roll error, and then reshim the elevation rails from 10 to 20 degrees za. ... Figure 1 Center: This is the tiedown position needed to correct the pitch,roll, focus error before and after the redrilling. ... Figure 1 Bottom: The tension in 1 tiedown block before and after redrilling. ...

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• optics
• Simulations of 3 ALFA Surveys
• p2717_26jun13

scripts · Made a comparison with SCISIM ray trace that replicates each observation Main Analysis Steps · Select regions for each camera and run esas · Extract spectra and background · Made an . arf that is a guess for typical off axis angle ( fn(E) knowing only a single reflection occurs ) · Assume source spectrum of a LMXRB e.g. const*phabs*(diskbb+comptt) probably the detailed spectrum doesn't matter to 1st order · Also require an ...

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• http://xmm.vilspa.esa.es/calibration/documentation/epic_cal_meetings/200704/Plucinsky.pdf
• http://xmm.vilspa.esa.es/calibration/documentation/epic_cal_meetings/200102/offcalc_status-E_Kendziorra.pdf
• SciSim Release Track

... 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. ...

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• Bias-Free Parameter Estimation with Few Counts, by Iterative Chi-Squared
• Non-parametric Algorithms in Data Reduction at RATAN-600
• Asteroseismology-Observing for a SONG

... The evolution of a binary system can be described as the movement of a point in the parameter space , constituting both physical quantities (such as masses of binary components, their radii, luminosities, orbital period, etc., independently of direct observational measurability of these values Each binary traces a path (which we will call a ``track'') in this space, in a way strictly determined by the evolutionary scenario. ... Then the fraction of binaries lying inside is expressed by . ...

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• Seminars

... Posts tagged ?bias correction? ... In the XSPEC packages, the parametric bootstrap is command FAKEIT, which makes Monte Carlo simulation of specified spectral model. ... Nonparametric Bootstrap? Tags: bias correction , bootstrap , FAKEIT , Prof. Babu , XSPEC . ... Comment . ... Entries RSS . Comments RSS . ... vlk on [MADS] Parallel Coordinates . upvc windows on [MADS] Parallel Coordinates . ... Alfred Inselberg on [MADS] Parallel Coordinates . ... Entries (RSS) and Comments (RSS) . ...

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• Synthetic Modulation
• Data analysis and Spatial Corrections
• *qpsim* - Generate Simulated Event List

New reduction of minor planets photographic plates obtained with Pulkovo Normal Astrograph A.A. Berezhnoy Pulkovo Observatory of RAS, Saint-Petersburg, Russia Minor Planet observations at Pulkovo Periodical observations of 14 bright asteroids named Selected Minor Planets (SMP) were performed at Pulkovo since 1948 within the international framework started by works of B.V. Numerov and D. Brouwer. ... 108 133 113 74 124 67 97 88 14 84 64 5 20 19 Epochs (YYYY.MM) 1200 Mean values of total obs. ...

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• http://www.puldb.ru/nikolaev_2011/PUB_NIKOLAEV_2011/mu.pdf

... 8.11.1995 . ... Low density gas is shown as blue, and high density gas as red. In the beginning of the universe , matter and gas were spread quite uniformly . As this computer universe evolved, gravity caused high density areas to be created. ... The areas of high and low density resulting from this computer simulation are similar to those observed by astronomers in the real universe . ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: universe . ...

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• XWare > APOD

In 1995 Eugene set an annual rainfall record by recording, officially, 65.56 inches of rain. ... The mean annual rainfall for Eugene from the 25 year period 1970-1994 was 51.5 inches with a dispersion of 8 inches. ... Wettest Years: . ... Below are the official NWS corrected rain totals for the year 1996. Although these are now "official", I go on record here by saying there is no way I believe that Eugene, Oregon received 101 inches of rain in 1996. ... January: Old = 14.74; corrected = 14.48 . ...

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Atmospheric influence on the different radio-engineering system functioning . ESTIMATION OF ATMOSPHERIC OPTICAL CHARACTERISTICS AND REMOTELY SANSED IMAGE CORRECTION . ... Direct transmittance estimation results for 12 channels of the spectrometer CHRIS. ... We have managed to develop a direct method of estimating the discrete Normalized Atmospheric Point Spread Function (NAPSF) from available images alone, not using any external sources of information about the atmosphere. ... IRE RAS 1996-20 11 ...

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... Several HST instruments both current and decommisioned have provided imaging linear polarimetry capabilities. ... The STECF IRAF layered package impol provides five tasks specifically aimed at reduction of HST imaging polarimetry data. ... Reduction of HST polarimetry data and simulation of raw polarimetry images, together with polarization vector plotting, are covered. ... For reduction of data from imaging linear polarization instruments other than from HST, the instrument name is `SPECIAL'. ...

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• stecf.impol - an IRAF Imaging Polarimetry Reduction Package
• STScI NICMOS Software
• NICMOS Camera 3 Parallel Imaging Observations: Number Counts, Sizes and Red

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Correlations between eccentricities and inclinations (top left), eccentricities and libration amplitudes (bottom) and inclinations and libration amplitudes (top right) at the end of a 1 Gyr simulation incorporating the Yarkovsky effect. ... In order to test if this could be a genetic family, we simulated the long term evolution of a tight orbital cluster centred on Eureka. ...

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• Latest News

. љ . Satellite's orientation sensing . љ This page still under construction . The onboard TV camera (TVC) allows to get images of star background and part of Earth's surface close the limb. By using reductions methods of photographic astrometry there is possibility to define orientation of TVC optic axis and other photometric devices. You are th visitor of this page . Back to Home Page . Personal information . Alexander Konovalenko alex.kono@mailcity.com

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... MAO main . ... The DRAGON globular cluster simulations: a million stars, black holes and gravitational waves . ... simulations of globular clusters with a million stars on the high-performance . ... of stars in globular clusters at unprecedented detail but also shed light into . the dark world of black holes. ... clusters of single and binary black holes. ... of a globular cluster. www.mpa-garching.mpg.de/328833/hl201603 . ... MAO/NASU, 27 Akademika Zabolotnoho St. 03680 Kyiv, Ukraine . ...

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• MAO NASU :: Topic: Article to gravitational wave detection by LIGO... N-body
• Traffic Analysis for ursa (UARNET)
• UPS 116/115 temperature

... Comparison of simulations with the large scalтАж . Sidebar Left . Sidebar Top . ... Title: Comparison of simulations with the large scale radio galaxy M87. Description: Comparison between a snapshot from Movie 2 (left panel) with the large scale radio structure of the famous radio galaxy M87. ... Comparison of simulations with the large scale radio galaxy M87. Comparison between a snapshot from Movie 2 (left panel) with the large scale radio structure of the famous radio galaxy M87. ...

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• Mach-numbers in a simulation of convection in the sub-giant Eta Boo
• Simulations of convection in stars
• Surface intensity of a Solar simulation