Gnuastro maintains the help-gnuastro mailing list for users to ask any questions related to Gnuastro. The experienced Gnuastro users and some of its developers are subscribed to this mailing list and your email will be sent to them immediately. However, when contacting this mailing list please have in mind that they are possibly very busy and might not be able to answer immediately.
To ask a question from this mailing list, send a mail to
firstname.lastname@example.org. Anyone can view the mailing list
archives at http://lists.gnu.org/archive/html/help-gnuastro/. It
is best that before sending a mail, you search the archives to see if
anyone has asked a question similar to yours. If you want to make a
suggestion or report a bug, please don’t send a mail to this mailing
list. We have other mailing lists and tools for those purposes, see
Report a bug or Suggest new feature.