Install ftools-fv by entering the following commands in the terminal:
sudo apt update sudo apt install ftools-fv
Description:
Tool for viewing and editing FITS format files
Fv provides a graphical user interface to data stored in FITS (Flexible Image Transport System) files. Local files can be created, viewed and edited, files on the internet can be opened read-only through the http and ftp protocols. Through the POWplot program, FITS data can be visualized in a large variety of styles. An interface to the SkyView online database allows for searching, downloading, and plotting of images and object lists for a region of the sky.
Homepage: https://heasarc.gsfc.nasa.gov/docs/software/lheasoft/ftools/fv/
Version: 5.4+dfsg-4
Section: universe/science