Extract_2d

The extract_2d step extracts a 2-D cutout for each spectrum in an exposure. It is saved as a “SCI” extension. It also computes and saves the wavelengths in a separate extension with EXTNAME “WAVELENGTH”. It works on Nirspec MSA and fixed slits, as well as on NIRISS and NIRCAM slitless observations. Point source Nirspec wavelengths are (optionally) corrected for An optional wavelength zero-point correction is applied to Nirspec point source observations when the source is not centered in the slit. The data for the correction is saved in a WAVECORR reference file.

• Reference File Types
• CRDS Selection Criteria For Each Reference File Type
  • WAVECORR
• Reference File Formats For Each Reference File Type
  • WAVECORR