Description
Caution: This filter is just as crucial to your safety and the system's performance as the front element. It must be used with a SolarMax primary filter.
Coronado BF-15 right angle (1.25" diagonal) type secondary blocking filter. The blocking filter is the second element in any Coronado H-alpha system, it is just as crucial to your safety and the system's performance as the front element. Cannot be used without a SolarMax front cell.
Secondary interference filter for full disc image of the Sun for telescopes up to 1,500mm focal length.
Compatible solar telescopes
- Coronado SolarMax II 60
- Coronado SolarMax II 90
