IC1318 The Butterfly nebula . The patch of nebulosity lies in the constellation of Cygnus the Swan . The bright star in this image is Gamma Cygni . The sky was particularly clear on this evening with stars visible down to magnitude five. I was using a 4 inch F 6/3 refractor , a Vixen Atlux mount,, PHD auto guiding , an Atik 383L mono CCD camera a set of Astronomik narrowband filters S11, HA , O111 and RGB filters. I captured five minute sub frames with matching dark frames and combined them with flat field frames to reduce the effect of vignetting in the final image. The total exposure times was 60 minutes using a H Alpha filter 20 minutes using an S11 filter and 20 minutes using an O111 filter.
Hubble Palette
RGB
