NEOchrome Animation is a simple animation format, presumably associated with the NEOchrome graphics editor for Atari ST (see also NEOchrome).
A file consists of a 22-byte header, followed by the image data.
It is apparently a 16-color paletted format, but no palette is stored in the file. It's not clear whether it uses a predefined palette, or if the palette must come from some other source.
Files start with signature bytes
ba be eb ea.