line_trace¶
-
pydis.line_trace(img, pcent, wcent, fmask=(1, ), maxbend=10, display=False)[source]¶ Trace the lines of constant wavelength along the spatial dimension.
To be run after peaks found in the HeNeAr lamp. Usually run internally to HeNeAr_fit()
Method works by tracing up and down from the image center (slice) along each HeNeAr line by 1 pixel, fitting a gaussian to find the center.
- Parameters
- img2d float
the HeNeAr data
- pcentfloat array
the pixel center along the image slice of each HeNeAr line to trace
- wcentfloat array
the identified wavelength that corresponds to each peak’s pixel center (pcent)
- fmaskfloat array, optional
the illumination section to trace trace over in spatial dimension
- maxbendint, optional
How big of a width (in pixel units) to allow the bend in the HeNeAr line to search over (Default is 10). Probably doesn’t need to be modified much.
- displaybool, optional
should we display plot after? (Default is False)
- Returns
- xcent, ycent, wcent
- These are the arrays of X pixel (wavelength dimension), Y pixel
- (spatial dimension), and corresponding wavelengths of each HeNeAr line.