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Data reduction techniques pdf

data reduction techniques pdf

"The real savings in energy efficiency comes in managing the code remise mr bricolage data said Christine Taylor, an analyst at Taneja Group in Hopkinton, Mass.
2003) using a FabryPerot (FP) interferometer on large galaxies samples (e.g.Type Calibration Finesse This paper has been typeset from a TEX/latex file prepared by the author).(ii) Morphological requirement: the bins should be as round as possible to optimize the spatial resolution.Then, the data cube is spatially binned to get a fairly good SNR on the sky emission.When considering the extended parts of resultat concours eppa 2017 the RC, strong smoothing must be applied to resolve the kinematics, as the signal in these regions is very weak.To do so, the data cube must be divided into two parts: the galaxy-dominated regions and the sky-dominated regions.We don't want to store junk.".The spatial resolution is generally limited by the seeing if the physical sampling of the seeing is sufficient.These filters have a typical profile width.The aim of their work was to bin radial velocity maps according the spectra SNR.
For less noisy spectra (0.004 relative.2 the Gaussian fitting algorithm performs slightly better.
"We really want to make sure that they're not just dumping things in there that they'll never look.
As it will be described in Section 3, the kinematical information is extracted by looking at only one emission line.
The RCs were extracted using the rotcur (Begeman 1987) routine of the gipsy package, using fixed inclination (i) and position angles (PA) at all radii.However, as the different spectral components of every pixel are not taken into account, it is impossible to predict the real SNR of a spectrum after its addition to another one.(ii) The OH emission changes as the line of sight crosses different OH radicals layers.The boundaries of the emission lines are determined by a twopass algorithm.It is thus relevant to introduce the concept of spatial smoothing adapted to a given SNR on the same data cube allowing maximum spatial resolution in regions of strong emission (e.g.

The C module is loaded in IDL through the Dynamically Lodable Modules (DLM) mechanism.
The FaNTOmM project has been carried out by the Laboratoire dAstrophysique Experimentale (LAE) of the Universite de Montreal using a grant from the Canadian Foundation for Innovation and the Ministere de l Education du Quebec.