Do you have some filters (the function) which are the same for astrophoto and EPs?

[malau]

Just wonder if any of you have any filters which are same function but one is for EP (viewing) and the other one is for astrophotography?

I am thinking to get OIII filter for my EP (when my friends come and have a look..etc) and another one for my 600D.. but seems duplicate and cost money...

any thoughts?

[Lee]

Not sure in regards to the physical form of the filters.... but Astronomik do some in visual and CCD - the CCD versions block IR wavelengths. You can use a CCD one for visual, vice versa likely not so good...