A couple of days ago ("first quarter" moon) I wanted to give it a go, but when I opened the door of the balcony it was like feeling a hair drier on my face... It was a hot day, very bright and windy too, and the turbulences were enormous. I decided to test the red filter with the NexImage... It improved the turbulences just a little bit, but at the bottom of the images there is a dark stripe. Transparent, but darker than the rest of the image? Is it normal when using a colour filter with the NexImage? Thanks.