hydra: KPNO HYDRA (and NESSIE) reduction package
- apall: Extract 1D spectra (all parameters in one task)
- apdefault: Set the default aperture parameters
- apedit: Edit apertures interactively
- apfind: Automatically find spectra and define apertures
- aprecenter: Recenter apertures
- apresize: Resize apertures
- apscatter: Fit and remove scattered light
- apsum: Extract 1D spectra
- aptrace: Trace positions of spectra
- bplot: Batch plots of spectra
- continuum: Fit the continuum in spectra
- dispcor: Dispersion correct spectra
- dopcor: Doppler correct spectra
- identify: Identify features in spectrum for dispersion solution
- msresp1d: Create 1D response spectra from flat field and sky spectra
- refspectra: Assign wavelength reference spectra to other spectra
- reidentify: Automatically identify features in spectra
- sapertures: Set or change aperture header information
- sarith: Spectrum arithmetic
- scombine: Combine spectra having different wavelength ranges
- scopy: Select and copy apertures in different spectral formats
- setairmass: Compute effective airmass and middle UT for an exposure
- setjd: Compute and set Julian dates in images
- sflip: Flip data and/or dispersion coordinates in spectra
- slist: List spectrum header parameters
- specplot: Stack and plot multiple spectra
- specshift: Shift spectral dispersion coordinate systems
- splot: Preliminary spectral plot/analysis
- dohydra: Process HYDRA spectra
- demos: Demonstrations and tests