An autoguider is a device used in astrophotography to continuously adjust the telescope’s tracking to compensate for periodic errors and tracking inaccuracies. While not necessary for all astrophotography setups, autoguiders are beneficial for long-exposure imaging sessions, especially when using telescopes with equatorial mounts or tracking mounts. They help maintain precise tracking and improve the overall quality of astrophotography images.
Come for the Scenery, Stay for the Stars