Thor's Helmet

This dataset contains a mix of different exposure times, ranging from 60s to 600s, the majority being either 300s or 600s. The total exposure time in this image is over 36 hours, of which there is just over 18 hours of Ha, nearly 13 hours of OIII and just over 5 1/2 hours of SII.

For example, there were 60 x 600s, 88x300s, 1x240s, 5x180s and 20x60s Ha subs that were aligned in PixInsight. I used the 60s subs solely to create the stars. The 60s subs ideally need to have the column defects corrected and all subs need cosmetic correction run on them.

The resulting image is a combination of blending techniques available in PixInsight, such as the Foraxx script and Image Blend script.