31 mm Blank Filter ?

[hughgilhespie]

Hi,

I guess I could make one if I had to but does anyone know if it's possible to buy a ready-made 31 mm opaque filter that will fit into a ZWO 8-position filter wheel? I have filled the other 7 positions and I think an opaque, blanking filter would be helpful for taking darks.

Regards, Hugh

[Adam J]

I think that most people just make one. I certainly would not pay for one.