IC 1805 .The core of the Heart nebula. The nebula lies in the constellation of Cassiopiea the Queen at a distance of about 7,500 light years . The sky conditions on this particular evening was not very clear , stars down to mag 4 was only visible . 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. I was using a ten inch F4.8 reflector , an Atik 383L mono CCD camera with P.H.D. auto guiding . The total exposure time was sixty minutes for each narrow band filter , H Alpha, S11 and O111 filters using the Hubble palette for the colour data.
