This is already a thing (tracking + derotator+ ccd in alt-az), but it’s super expensive and doesn’t work as well as just using an equatorial mount in the first

This is already a thing (tracking + derotator+ ccd in alt-az), but it’s super expensive and doesn’t work as well as just using an equatorial mount in the first place. More basic tracking dobs are used for planetary and lunar astronomy though due to the shorter exposure times.