Hi guys and gals
I'm looking at getting a neutral density filter, specifically for Jupiter's opposition next month. A couple I've seen are 25% and 50% light transmission -
http://www.yorkoptical.com.au/Produc...ee3%2cUnitCost
The other is 13% transmission -
http://www.myastroshop.com.au/produc...asp?id=MAS-001
I've got a 12 inch dob and mainly use powers between 130 and 200x (dependent on the seeing conditions, of course). Which filter would be best for my situation? I'd like to pull as much detail as I can out of the gas giants but seeing isn't always on my side here in suburbia.
Cheers

Wade