longslit: Longslit Package
- background: Fit and subtract a line or column background
- bplot: Batch plots of spectra
- calibrate: Apply extinction and flux calibrations to spectra
- deredden: Apply interstellar extinction correction
- dopcor: Apply doppler corrections
- fceval: Evaluate coordinates using the FITSCOORDS solutions
- fitcoords: Fit user coordinates to image coordinates
- identify: Identify features
- illumination: Determine illumination calibration
- lcalib: List calibration file data
- lscombine: Combine longslit images
- reidentify: Reidentify features
- response: Determine response calibration
- sarith: Spectrum arithmetic
- scopy: Sum and extract spectra from long slit to 1D format
- sensfunc: Create sensitivity function
- 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
- specplot: Stack and plot multiple spectra
- specshift: Shift spectral dispersion coordinate systems
- splot: Preliminary spectral plot/analysis
- standard: Identify standard stars to be used in sensitivity calc
- transform: Transform longslit images to user coordinates
- extinction: Apply atmospheric extinction corrections to images (obsolete)
- fluxcalib: Apply flux calibration to images (obsolete)
- demos: Demonstration and test playbacks