Simeis 147 LRGB Ha Data

[Knight of Clear Skies]

Thought I'd share some data from a recent image on Dropbox in case anyone wants a play with it. There are two files, LRGB and Ha, which should be linear and align with each other.

Image details and my attempts at processing it here. The key to processing it was combining the Ha layer with the red channel using 'lighten' mode in Photoshop. Here's a good tutorial on how to achieve this, it's quite easy to do. I'm finding combining Ha data absolutely key for improving images of nebulae. Even imaging from a very dark site the Ha filter does a far better job of separating the nebulosity from the skyglow and background stars. The above data was taken with the 1600MM cool mono cam but I find my 12nm clip-in filter for my DSLR also works very well. I also find Ha much easier to process than colour images.

Edited April 15, 2020 by Knight of Clear Skies