Was imaging last night going for my best horsehead shot when all of a sudden i noticed donuts appearing on my horsehead images. Only captured 6 x 2minute shots before I had it and gave up. seems like the head appears much better with the IR Filter taken out.
Silly me all these time i have been taking images with the IR Filter. Looks like i have to retake all my images without it
busyy busyy weekend.
In the end I realised the donuts were infact dust so i gave it a gentle blow and was gone but by then the horsehead faded behind my neighbours roof.
arghh well. Have to give it another go tomorrow.
Nite