The video data supplied by the DITS (digital television spectrometer) camera is produced in such large quantities and at such a high rate that some form of automated data reduction is necessary. The data are recorded on both photographic film and magnetic tape. The film provides a rapid means for editing the data, while the magnetic tape preserved the accuracy of the data and stores it in a form compatible for computer processing.
H. E. Zieman,
D. I. Underwood,
H. I. Ziegler,
"Data Recording For A Digital Television Spectrometer", Proc. SPIE 0003, Electronic Imaging Techniques, (26 September 1965); doi: 10.1117/12.970952; https://doi.org/10.1117/12.970952