Next: Hierarchical Wiener filtering Up: Noise reduction from Previous: The convolution from . Let us consider a measured wavelet coefficient at the scale i . We assume that its value, at a given scale and a given position, results from a noisy process, with a Gaussian distribution with a mathematical expectation , and a standard deviation : . ... We get: . ... This is done from the study of the variation of the noise between two scales, with an hypothesis of a white gaussian noise; . ...

... Обзор LPR фильтра. Впечатления от наблюдений с LPR фильтром. ... Характеристики цветных фильтров Baader-Planetarium . Мой перевод pdf- файла о фильтрах с сайта Baader-Planetarium (379 кб) . ...

... Posts tagged ?spatial statistics? ... As a part of exploring spatial distribution of particles/objects, not to approximate via Poisson process or Gaussian process (parametric), nor to impose hypotheses such as homogenous, isotropic, or uniform, various nonparametric methods somewhat dragged my attention for data exploration and preliminary analysis. ... I decide to discuss Kalman Filter a while ago for the slog after finding out that this popular methodology is rather underrepresented in astronomy. ...

SCORPIO FILTERS . UBVRcIc-filters . Glass filters for Jounson-Cousins photometric system. ... Broad-band filters parameters (filter+optics+CCD EEV42-40): . name . Tmax(%) . ... ASC-file . Image . ... SED-filters . Middle-band filters for Spectral Energy Distribution. ... SED filters parameters (for beam F/4) . ... SED 830 and SED 930 . ... Middle-band filters for comets molecular bands. ... IFP-filters . ... IFP filters parameters (for beam F/4) . ...

The summary plot shows the monthly time distribution of all predicted magnetic conjugations between four spacecraft considered. ... To show the time of conjugation, in frame of the corresponding day for each SC the corresponding colour and line are used: . for the first SC the red color and the first line are used, . ... On the plot the SC names are shown by the corresponding colours. The summary plot permit to find the simultaneous magnetic conjugations of 3 and even 4 satellites. ...

... Apache HTTP Server Version 2.2 . ... This document describes the use of filters in Apache. ... The Filter Chain is available in Apache 2.0 and higher, and enables applications to process incoming and outgoing data in a highly flexible and configurable manner, regardless of where the data comes from. ... A wider range of applications are implemented by third-party filter modules available from modules.apache.org and elsewhere. ... There are two ways to use filtering: Simple and Dynamic. ...

. XMM-Newton Science Analysis System . omsrclistcomb (omsrclistcomb-2.11.4) [xmmsas_20080701_1801-8.0.0] . Meta Index / Home Page / The SRCLIST table These columns will contain the corresponding errors for the previous columns and are in fact the same as the corresponding instrumental magnitudes errors. XMM-Newton SOC/SSC -- 2008-07-02

... The simulated image is 256 x 256 pixels (of the total 800 x 800 for the CCD) and is centered on the chip. ... Files ----- star.lis star list psf .lis PSF parameters truth 470 point sources (delta functions), no noise, no background sim1 WF, space invar PSF (mpsf12.fit), mono, center of image sim2 WF, space invar PSF (psf12.fit), F555W filter , center of image sim3 WF, space var PSF , monochromatic sim4 WF, space var PSF , F555W filter sim5 WF, space var PSF , F555W ...

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... ESO Acronyms . ... Survey Telescopes . ... Star Clusters . ... Stars@ESO . ... The Comet€аMcNaught€а2007 . ... Comet Hale Bopp - 1994 . ... In the course of the continuing observational programme at the ESO La Silla Observatory in the Chilean Atacama desert, CCD frames of Comet Hale-Bopp were obtained on 1 October 1997 with the 2.2-m ESO/MPI telescope. ... Comet Hale-Bopp . ...

... Figure 1 shows some synthetic test data u(n) to which random noise v(n) is added. ... for the above simulations % % % % % Explore the use of eigenanalysis techniques in post detection digital signal processing for noise rejection Potential application include spectroscopy and imaging Jon Bell 24 Jul 2000 clear % Make some fake raw data nspec = 120 ; ntime = 10; scale = 1.0; noisescale = 1.0; dcoff = 0.0; psi =1.0; j=1:1:nspec; k=1:1:ntime; rawdata = sin(j/3) + sin(j/5) + 1; rawdata = ( ...