Coronado Blockfilter BF 30mm 2"

2" size blocking filter, straight tube.

The blocking filter is a mandatory piece of equipment for the safe use of the solar telescope. The blocking filter must never be replaced with a standard angular prism, as the blocking filter contains a standard that dims the brightness of the sun. The hydrogen alpha telescope will not work without a blocking filter.

Suitable for telescopes with a focal length of up to 3000 mm. Needs a 2 "focuser.

Suitable for following telescopes

• Coronado SolarMax II 90