M78. This image of M78 was taken on four separate evenings. On the first evening I used an IDAS filter to collect 90 minutes of general luminance data. On the second evening I captured two hours of O111 data, on the third evening I captured four hours and ten minutes of data using a H Alpha filter and on the fourth evening three hours of data using a blue filter a total exposure time of 10 hours and ten minutes. I was using my four inch F/6.3 refractor. a Vixen Atlux mount, PHD auto guiding, A set of Astronomik RGB and narrowband filters and an Atik 383L mono CCD camera. I captured five minute sub frames with matching dark frames and combined them with flat field and bias frames to reduce the effect of noise and vignetting in the final image.
