Ensure your antivirus and antimalware definitions are fully up to date, and perform a dedicated scan on any third-party installer before execution.
If you want a lightweight, standalone copy of ST4 for basic planning and don’t need support or latest data, the repack works. For serious observing, buy the official version or upgrade to SkyTools 5.
: Contains over 522 million stars and 500,000 accurate galaxies.
A powerful, open-source planetarium that offers robust observational planning tools and direct telescope control.
Designed entirely for observation with the naked eye, binoculars, or telescopes. SkyTools Astronomy Planning Software by Skyhound
If you need to reinstall or move your official software to a new computer:
For the legitimate version of SkyTools 4, the developer provides specific guidance for re-installing, moving to new devices, and initial setup. Official Installation & Setup Guide
Ensure your antivirus and antimalware definitions are fully up to date, and perform a dedicated scan on any third-party installer before execution.
If you want a lightweight, standalone copy of ST4 for basic planning and don’t need support or latest data, the repack works. For serious observing, buy the official version or upgrade to SkyTools 5.
: Contains over 522 million stars and 500,000 accurate galaxies.
A powerful, open-source planetarium that offers robust observational planning tools and direct telescope control.
Designed entirely for observation with the naked eye, binoculars, or telescopes. SkyTools Astronomy Planning Software by Skyhound
If you need to reinstall or move your official software to a new computer:
For the legitimate version of SkyTools 4, the developer provides specific guidance for re-installing, moving to new devices, and initial setup. Official Installation & Setup Guide
