Processing Images – NGC 6618 (Part 2 of 3)
Image processing of the Swan Nebula finally completed.
The Black stripe (Click to Enlarge)
As mentioned in the last post, with the majority of the detail of this nebula being captured by the red filter exposure, the nebula did indeed turn out red. However, there is a fair bit of blue and green used to bring out some nice detail which was not evident in the exposures.
The hard part was to try and add the blue and green tinges to the image without getting a washed out appearance.
Once the main part of the imaging was complete, we then look at the black stripe running down the middle of the exposures. That of couese ends up in the final image. Luckily this is just a matter of joining the 2 sides of the picture together to get rid of the black stripe.
Unfortunately after this there was still a bit of a line , almost like a crease mark in a magazine. A little bit of photo editing using first a soften brush followed by a clone brush fixed up any signs of the crease line.
NGC 6618 final image 2002-04-01 (Click to Enlarge)
