Gnuastro 0.18.71 released [alpha]
posted by Roy Schestowitz on Oct 10, 2022
Dear all,
The last few months (since the release of Gnuastro 0.18) have been
very productive in Gnuastro (16866 lines added and 4864 lines removed,
in 71 commits) with some pretty exciting, and long-awaited new
features now available (for the full list, see [1] below).
- Warp: align images with the WCS (usually RA/Dec), or another image
(with any rotation/projection/distortion), while accounting for all
WCSLIB-recognized distortions and projections (for the full list of
projection and distortion models see [1] below). In other words, we
are finally free from the chains of the TPV and can directly align
images with SIP or other distortions in creating aligned coadds!
Tip: if you get unreasonable results, upgrade to WCSLIB 7.12.
- ConvertType: draw vector graphics markers based on input catalogs
in the output PDFs (very good for producing high-quality figures in
your papers).
- Statistics: least squares fitting (currently in 1D).
In fact, Pedram (author of the newly added Warp feature above) has
recorded a video highlighing the first two points in Warp and
ConvertType, please watch it to get a hands-on feeling of the power of
these new capabilities using SDSS and J-PLUS images:
https://peertube.stream/w/uq7SBDYZS1HRtJwCkbcDsz
If you have any questions or ideas, feel free to get in touch with
Pedram and the rest of the users and developers in our Matrix chat:
https://openastronomy.element.io/#/room/#gnuastro:openastronomy.org
As always, complete tutorials and documentation for all these features
is also available. Currently the documentation is only in 'info'
format, installed with Gnuastro (the webpage will be updated with
version 0.19). A PDF copy of the latest documentation is available
here: https://akhlaghi.org/gnuastro.pdf
We are therefore almost ready for the next official release of
Gnuastro; hence the reason for this alpha release. It would be great
if you could try building and using this release to help us fix any
important bugs, crashes, compiler warnings and etc. Your feedback will
allow Gnuastro 0.19 to be smoothly usable for all of us :-).
Here is the compressed source and the GPG detached signature for
this release. To uncompress Lzip tarballs, see [2]. To check the
validity of the tarballs using the GPG detached signature (*.sig)
see [3]:
https://alpha.gnu.org/gnu/gnuastro/gnuastro-0.18.71-c982.tar.lz
https://alpha.gnu.org/gnu/gnuastro/gnuastro-0.18.71-c982.tar.lz.sig
Here are the SHA1 and SHA256 checksums (other ways to check if the
tarball you download is what we distributed). Just note that the
SHA256 checksum is base64 encoded, instead of the hexadecimal encoding
that most checksum tools default to (see [4] on how to generate it).
For the list of software used to bootstrap this tarball, see [5].
67df5849a8717da55b73982eaa72082fc9769296 gnuastro-0.18.71-c982.tar.lz
Qw8bU2sZDVR28q8ZaNppFKJUQ0Dgqa106nzUIq25y0c gnuastro-0.18.71-c982.tar.lz
For their direct contribution to this version's source code, I am very
grateful to Pedram Ashofteh-Ardakani (6 commits), Raul Infante-Sainz
(6), Sepideh Eskandarlou (5), Jash Shah (3), Marjan Akbari (2), Elham
Saremi (1) and Faezeh Bijarchian (1). I am also grateful to (in
alphabetical order) Marjan Akbari, Faezeh Bijarchian, Sepideh
Eskandarlou, Giulia Golini, Raul Infante-Sainz, Teet Kuutma and
Richard Stallman for their good suggestions or reported bugs that have
been implemented in this release.
If any of Gnuastro's programs or libraries are useful in your work,
please cite _and_ acknowledge them. For citation and acknowledgment
guidelines, run the relevant programs with a `--cite' option (it can
be different for different programs, so run it for all the programs
you use). Citations _and_ acknowledgments are vital for the continued
work on Gnuastro, so please don't forget to support us by doing so.
Best wishes,
Mohammad
--
Staff Researcher
Centro de Estudios de Física del Cosmos de Aragón (CEFCA),
Plaza San Juan 1, Planta 2, Teruel 44001, Spain
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