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FWHM Properties (Source Extraction)
This dialog sets Properties for the Precision FWHM measurement. This measurement is
one of the
Post-process options for the
Extract Sources command.
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FWHM Properties
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FWHM Properties
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Fitting Radius
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Sets the radius over which a PSF (Moffat or
Gaussian) function is fit.
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 Auto Centroid
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Check this box to cause the FWHM to be computed
using a centroid position as its center. If not checked, the FWHM
value uses the image cursor position as its center.
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[Advanced]
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Opens the
PSF Fit Properties dialog for setting advanced
fitting properties. See below.
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Centroid on
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Selects the direction of intensity profile used
for calculating centroid positions. This is measured from the pixel
values and is not affected by the choice of display settings, such
as the palette or contrast.
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Positive Points
Negative Points
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Selects whether to centroid on positive-going
values (peaks) or negative-going values (valleys).
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Sample Radius
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Defines the distance from the target point within
which pixel data are used to compute the centroid position. A
reasonable radius value is approximately half the diameter
of a point source image.
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Related Topics
Source
Extraction
Post-process
FWHM Properties
Mira Pro x64 User's Guide, Copyright Ⓒ 2023 Mirametrics, Inc. All
Rights Reserved.
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