Install astrometry-data-tycho2-07-bigendian by entering the following commands in the terminal:
sudo apt update sudo apt install astrometry-data-tycho2-07-bigendian
Astrometry.net Tycho-2 big endian index files (22'-30')
The astrometry engine will take any image and return the astrometry world coordinate system (WCS), a standards-based description of the transformation between image coordinates and sky coordinates. . This package contains the 4107 index file from the Tycho-2 catalog containing skymarks of sizes 22 arcminutes to 30 arcminutes. Byte order is big endian.