Starlight Instruments 1:10 Micro Reduction for Celestron C9.25
Allows more precise focus, e.g. for astrophotography.
Celestron Schmidt Cassegrain's focus adjustment is done by adjusting the main mirror. For many applications, the normal setting is not fine enough. Thus, focusing on astrophotography often becomes a game of patience.
The 1:10 micro reduction solves the problem. The reduction is simply mounted on the telescope's focuser. The assembly is simple, it is not necessary to disassemble the telescope.