cls ccd filter

flickr

Eta Carina nebula by Rafael Compassi
Via Flickr:
SW 8" F/5 Canon T1i 32x300s ISO1600 Astronomik CLS CCD Clip filter

flickr

M42 and Running man by Rafael Compassi
Via Flickr:
SW 200p Canon T1i 47x300s CLS CCD clip filter