Input Data

This page describes the input data required for the data reduction process (shown in the green boxes in the image above). Please also refer to Names and Terms of IRD/REACH data for the naming conventions of observation data and detailed explanations of calibration datasets.

• Flat_comb

  • Frame IDs in the sample data: IRDA00041704.fits - IRDA00041803.fits

  • Required for aperture tracing (for both fibers, by default)

  • Required for flat fielding and normalizing the spectrum of the comb fiber

• Flat_star

  • Frame IDs in the sample data: IRDA00041804.fits - IRDA00041903.fits

  • Optionally used for aperture tracing for the star fiber

  • Required for flat fielding and normalizing the spectrum of the star fiber

Tip

See also Names of Calibration Dataset for flat data used for aperture tracing.

• Dark

  • Frame IDs in the sample data: IRDA00041504.fits

  • Optionally used for identifying hot pixels

Tip

See also Read Hotpixel Mask for another option for handling hot pixels.

• ThAr

  • Frame IDs in the sample data: IRD[B/A]D00014632.fits - IRD[B/A]D00014732.fits

  • Required for wavelength calibration

• Target (Science)

  • Frame IDs in the sample data: IRDA00041510.fits, IRDA00041511.fits

  • Main observation frames

Note

Supported instruments in PyIRD v1.1.0:

• ✅ IRD

• ✅ REACH

• ☑️ IRCS (available on the develop branch)