Any single field can be extracted, and multidimensional as well as variable length arrays are also supported. Any individual field can also be extracted. An input string array header can be specified for creating the primary FITS header. Additional rows can be appended to existing binary tables. Each row of the binary table represents all the data for one spectral order.
Linearized wavelengths are optional.
With linearized wavelengths, the wavelength array is replaced with two scalar fields W0 and deltaW. Vectors are all fixed length and padded with zeroes. Currently the option to create the primary array file only stores the flux vector, with linearized wavelengths stored as keywords. Most have been modified or updated. Assume guess.fit has a primary array, an image extension and a binary table extension.