Coming soon in Gnuastro 0.15

GNU Astronomy Utilities (Gnuastro) is an official GNU package consisting of various programs and library functions for the manipulation and analysis of astronomical data.

The current stable Gnuastro release is version 0.14. In this page, you can see some demonstrations of ongoing work for the next release. To download the development tarball and its PDF documentation, please use the links below:

• Tarball: https://akhlaghi.org/gnuastro-latest.tar.lz

• PDF manual: https://akhlaghi.org/gnuastro.pdf

We encourage you to build the executables, test the new features, and report any new bugs that you come across. Thank you!

List of new features

Each feature is shown with a short description as well as an animated terminal (recorded as an animated SVG image), showing the usage of the command in practice.

• Table: removing all rows with a NaN in all columns.

• Table: selecting contiguous range of rows.

• Table: selecting random set of rows in a large table.

Input dataset

For this demonstration, we'll use the following commands to download the necessary dataset. For the demonstration table, we'll get the catalog of all stars within 0.5 degrees of the coordinates 0,0 (in RA and Dec) from the VizieR database. We'll ask for the Right Ascension (epoch 2000: RAJ2000), Declination (epoch 2000: DEJ2000), G-band magnitude (Gmag) as well as the parallax and its error (Plx and e_Plx).

  astquery vizier --dataset=gaiaedr3 --center=0,0 --radius=0.5 \
           --column=RAJ2000,DEJ2000,Gmag,Plx,e_Plx --output=table.fits

Here is a video demonstration of the command above and how it operates:

Download the demo in WebM format.