It's funny how the CLS produces such a strong blue colour cast but isn't very sensitive to blue reflection nebula.
It is a tricky filter to tame.
I want to try the UHC-E as well as the IDAS filter, and get a fast newt, and an electric bike... But Bill has moved in for a while so I'm stuffed.
I was wondering about those cheap light pollution filters and how well they work, like the $50 ones on ebay.