Originally posted by ecostigny I never heard of the red intensifier or didymium filters, but I'm intrigued after googling them. Have you tried them, and how well have they worked for you?
Yes I have two smaller ones, and even though I am in a very dark area, sky-wise, I still have some small cities nearby so yes, I found that they helped even when doing single exposure star images. I need to step up and get a 77mm for my FA* and DA* lenses since winter is the best time for astro here in Maine. But I am working full time so staying up till 2 and 3AM is not as easy. (That and shoveling snow take up my energy!
)