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Ellipticity in SEP #80

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fedeaero opened this issue Jul 16, 2020 · 1 comment
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Ellipticity in SEP #80

fedeaero opened this issue Jul 16, 2020 · 1 comment
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@fedeaero
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Hi,

I was wondering if there is an ellipticity field to add to SEP routine, since I only want to detect the streak of the object passing through the field of view, and discard the stars. Therefore I need an ellipticity < 0.3.

Thank you very much!

@kbarbary
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The a and b parameters returned by sep.extract() are proportional to the semi-major and semi-minor axes, so ellipticity can be calculated as:

ellipticity = (objects["a"] - objects["b"]) / objects["a"]

Repository owner locked and limited conversation to collaborators Aug 31, 2021

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