LSST Applications g0265f82a02+c6dfa2ddaf,g1162b98a3f+b2075782a9,g2079a07aa2+1b2e822518,g2bbee38e9b+c6dfa2ddaf,g337abbeb29+c6dfa2ddaf,g3ddfee87b4+a60788ef87,g50ff169b8f+2eb0e556e8,g52b1c1532d+90ebb246c7,g555ede804d+a60788ef87,g591dd9f2cf+ba8caea58f,g5ec818987f+864ee9cddb,g858d7b2824+9ee1ab4172,g876c692160+a40945ebb7,g8a8a8dda67+90ebb246c7,g8cdfe0ae6a+4fd9e222a8,g99cad8db69+5e309b7bc6,g9ddcbc5298+a1346535a5,ga1e77700b3+df8f93165b,ga8c6da7877+aa12a14d27,gae46bcf261+c6dfa2ddaf,gb0e22166c9+8634eb87fb,gb3f2274832+d0da15e3be,gba4ed39666+1ac82b564f,gbb8dafda3b+5dfd9c994b,gbeb006f7da+97157f9740,gc28159a63d+c6dfa2ddaf,gc86a011abf+9ee1ab4172,gcf0d15dbbd+a60788ef87,gdaeeff99f8+1cafcb7cd4,gdc0c513512+9ee1ab4172,ge79ae78c31+c6dfa2ddaf,geb67518f79+ba1859f325,geb961e4c1e+f9439d1e6f,gee10cc3b42+90ebb246c7,gf1cff7945b+9ee1ab4172,w.2024.12
LSST Data Management Base Package
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Public Member Functions | List of all members
lsst.afw.image._photoCalibContinued.PhotoCalib Class Reference

Public Member Functions

 getLocalCalibrationArray (self, x, y)
 
 instFluxToMagnitudeArray (self, instFluxes, x, y)
 
 magnitudeToInstFluxArray (self, magnitudes, x, y)
 

Detailed Description

Definition at line 33 of file _photoCalibContinued.py.

Member Function Documentation

◆ getLocalCalibrationArray()

lsst.afw.image._photoCalibContinued.PhotoCalib.getLocalCalibrationArray ( self,
x,
y )
Get the local calibration values (nJy/counts) for numpy arrays (pixels).

Parameters
----------
x : `np.ndarray` (N,)
    Array of x values (pixels).
y : `np.ndarray` (N,)
    Array of y values (pixels).

Returns
-------
localCalibration : `np.ndarray` (N,)
    Array of local calibration values (nJy/counts).

Definition at line 34 of file _photoCalibContinued.py.

34 def getLocalCalibrationArray(self, x, y):
35 """Get the local calibration values (nJy/counts) for numpy arrays (pixels).
36
37 Parameters
38 ----------
39 x : `np.ndarray` (N,)
40 Array of x values (pixels).
41 y : `np.ndarray` (N,)
42 Array of y values (pixels).
43
44 Returns
45 -------
46 localCalibration : `np.ndarray` (N,)
47 Array of local calibration values (nJy/counts).
48 """
49 if self._isConstant:
50 return np.full(len(x), self.getCalibrationMean())
51 else:
52 bf = self.computeScaledCalibration()
53 return self.getCalibrationMean()*bf.evaluate(x, y)
54

◆ instFluxToMagnitudeArray()

lsst.afw.image._photoCalibContinued.PhotoCalib.instFluxToMagnitudeArray ( self,
instFluxes,
x,
y )
Convert instFlux (counts) to magnitudes for numpy arrays (pixels).

Parameters
----------
instFluxes : `np.ndarray` (N,)
    Array of instFluxes to convert (counts).
x : `np.ndarray` (N,)
    Array of x values (pixels).
y : `np.ndarray` (N,)
    Array of y values (pixels).

Returns
-------
magnitudes : `astropy.units.Magnitude` (N,)
    Array of AB magnitudes.

Definition at line 55 of file _photoCalibContinued.py.

55 def instFluxToMagnitudeArray(self, instFluxes, x, y):
56 """Convert instFlux (counts) to magnitudes for numpy arrays (pixels).
57
58 Parameters
59 ----------
60 instFluxes : `np.ndarray` (N,)
61 Array of instFluxes to convert (counts).
62 x : `np.ndarray` (N,)
63 Array of x values (pixels).
64 y : `np.ndarray` (N,)
65 Array of y values (pixels).
66
67 Returns
68 -------
69 magnitudes : `astropy.units.Magnitude` (N,)
70 Array of AB magnitudes.
71 """
72 scale = self.getLocalCalibrationArray(x, y)
73 nanoJansky = (instFluxes*scale)*units.nJy
74
75 return nanoJansky.to(units.ABmag)
76

◆ magnitudeToInstFluxArray()

lsst.afw.image._photoCalibContinued.PhotoCalib.magnitudeToInstFluxArray ( self,
magnitudes,
x,
y )
Convert magnitudes to instFlux (counts) for numpy arrays (pixels).

Parameters
----------
magnitudes : `np.ndarray` or `astropy.units.Magnitude` (N,)
    Array of AB magnitudes.
x : `np.ndarray` (N,)
    Array of x values (pixels).
y : `np.ndarray` (N,)
    Array of y values (pixels).

Returns
-------
instFluxes : `np.ndarray` (N,)
    Array of instFluxes (counts).

Definition at line 77 of file _photoCalibContinued.py.

77 def magnitudeToInstFluxArray(self, magnitudes, x, y):
78 """Convert magnitudes to instFlux (counts) for numpy arrays (pixels).
79
80 Parameters
81 ----------
82 magnitudes : `np.ndarray` or `astropy.units.Magnitude` (N,)
83 Array of AB magnitudes.
84 x : `np.ndarray` (N,)
85 Array of x values (pixels).
86 y : `np.ndarray` (N,)
87 Array of y values (pixels).
88
89 Returns
90 -------
91 instFluxes : `np.ndarray` (N,)
92 Array of instFluxes (counts).
93 """
94 scale = self.getLocalCalibrationArray(x, y)
95
96 if not isinstance(magnitudes, units.Magnitude):
97 _magnitudes = magnitudes*units.ABmag
98 else:
99 _magnitudes = magnitudes
100
101 nanoJansky = _magnitudes.to(units.nJy).value
102
103 return nanoJansky/scale

The documentation for this class was generated from the following file: