HereyagoLeon.
The Great Man Dennis wrote an article awhile ago on just this subject.
http://www.iceinspace.com.au/index.p...63,213,0,0,1,0
I use both the red gel or the neutral density depending on the situation and who else is around and what they are doing. Visual observerse I use the red, other imagers I use the neutral density. One my own.....filters???? what filters????
