Coronado Blockfilter BF 5mm 1.25"

1.25" size blocking filter for  eyepiece and focuser.

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 500 mm.

Suitable for telescopes

Coronado SolarMax II 60

Coronado SolarMax II 90