input raw frames: SCI_IFU_STARE_<arm> (arm = UVB/VIS/NIR)
Purpose: Processes the data up to 3D cube
Description: The spectra are bias- or dark-corrected. The order table is used to locate the inter-order regions where the background is fit with a polynomial, which is then subtracted from the data. The frame is flat-fielded. The sky is not subtracted nor is any cosmic ray correction performed on single frames. The data are the transformed into a 3D cube (see manual for details) and the object is traced along the three slices.