slit_shutter_scale¶
- msaexp.utils.slit_shutter_scale(slit, ref_wavelength=None, **kwargs)[source]¶
Compute cross dispersion pixel scale from slit WCS in shutter coordinates
- Parameters
- slit
SlitModel Slitlet data object
- ref_wavelengthfloat, None
Reference wavelength (microns). If not specified, will use
np.nanmedian(slit.wavelength).
- slit
- Returns
- pix_scalefloat
Cross-dispersion pixel scale
shutters / pixel