Check your solar filter !

[cotterless45]

Over wintered in a sealed container. First thing I noticed was a black spot on the silver side (Baader Astro film - about 4 years old). Holding it up to the sun , I noticed this let light straight through . I addition there were several smaller holes.

I can only think that this is due to pollen damage. It might be worth having a find check and lightly blow brushing the surface after use. In any event , it is good practice to always check your filter before use. Black spot at 12.00 and various other minor ones. Safe viewing !

Nick.

[Ouroboros]

Yep. Every time I use it, which isn't very often, I always make a point of holding my Baader astro film filter up to the sky to make sure there are no holes. It just ain't worth taking the risk. 

[Peter Drew]

Just black out a single hole with a marker pen or a bit of black tape.   ?