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PSF.h
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1 // -*- LSST-C++ -*-
2 
3 /*
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24 
25 #if !defined(LSST_MEAS_ALGORITHMS_PSF_H)
26 #define LSST_MEAS_ALGORITHMS_PSF_H
27 // Describe an image's PSF
29 //
30 #include <string>
31 #include "lsst/base.h"
32 
33 namespace lsst {
34 namespace afw {
35  namespace detection {
36  class Psf;
37  }
38  namespace geom {
39  template<typename T, int N> class Point;
40  typedef Point<int,2> Point2I;
41  }
42  namespace image {
43  template<typename T> class Image;
44  }
45 }
46 namespace meas {
47 namespace algorithms {
48 
49 /************************************************************************************************************/
67 public:
73  };
74 
75  PsfAttributes(CONST_PTR(lsst::afw::detection::Psf) psf, int const iX, int const iY);
76  PsfAttributes(CONST_PTR(lsst::afw::detection::Psf) psf, lsst::afw::geom::Point2I const& cen);
77 
79  double computeEffectiveArea() const;
80 
81 private:
82  PTR(lsst::afw::image::Image<double>) _psfImage;
83 };
84 
85 
86 }}}
87 #endif
Calculate width as sqrt(n_eff/(4 pi))
Definition: PSF.h:71
PsfAttributes(boost::shared_ptr< lsst::afw::detection::Psf const > psf, int const iX, int const iY)
Constructor for PsfAttributes.
A class to contain various attributes of the Psf.
Definition: PSF.h:66
Calculate width using &lt;r^2&gt;
Definition: PSF.h:70
double computeEffectiveArea() const
Compute the effective area of the psf ( sum(I)^2/sum(I^2) )
Calculate width using &lt;r&gt;
Definition: PSF.h:69
Point< int, 2 > Point2I
Definition: PSF.h:39
Weight &lt;r^2&gt; by I^2 to avoid negative fluxes.
Definition: PSF.h:72
Calculate width using adaptive Gaussian weights.
Definition: PSF.h:68
double computeGaussianWidth(Method how=ADAPTIVE_MOMENT) const
Compute the &#39;sigma&#39; value for an equivalent gaussian psf.