8th release of GNU Astronomy Utilities available now.
 Noteworthy changes in release 0.8 (library 6.0.0) (2018-12-28) [stable]
** New features
- Input files and parameters written as keywords in the first extension
of output when it is FITS. This is only relevant for some programs,
(for example not the Fits or Table programs).
- Standard input (for example from pipes) is now available to feed input
to all programs that accept plain text input (ConvertType, Convolve,
Match, MakeProfiles, Statistics, Table).
- Updated acknowledgment statement (output of `--cite' option).
> --onedasimage: write output as an image if it has one dimension, not table.
--colormap: color map to display a single-channel dataset (for example
FITS image) with a range of colors in formats that support color
(like JPEG, or PDF). Until now, the only available mapping was
grayscale. Now "Hue, Saturation, Value" (HSV) and "SLS" (from SAO
DS9) colormaps are also supported.
--rgbtohsv: Convert the RGB input channels to HSV (when the output is
in FITS format).
- Convolves 1D arrays (table columns, for example spectra)
also. Therefore two new options have been added to it: `--column'
(`-c', similar to other programs that read table columns), and
`--kernelcolumn' (to specify the column of the kernel in its own
--numhdus: prints the number of HDUs in the given FITS file.