I am very happy to bring to an end to this first very large project. This image total almost 79 hours of data, collected using an OSC camera either with an uv-ir cut filter or with a dual narrowband filter. The nine RGB and nine Ha panels were stacked using SIRIL and then stitched in pixinsight with photometric mosaic to get the initial 3x3 Ha and RGB files.
From there, it was Pixinsight all the way.
- Star were extracted using starnet from the RGB file, stretched (light mask stretch), reduced by erosion based on a dilated star mask) and then deconvoluted and staturated.
- The RGB starless was calibrated, denoised, stretched with GHS, transformed with curves and went through a HDRMT.
- for the addition of the Ha, I used the wonderful guide for continum substraction and bright structure additions by Charles Hagen (
https://www.nightphotons.com/guides/advanced-narrowband-combination).
Given the time I invested in getting these data, I am now very happy to get any constructive criticism helping to improve that image.
Clear skies !
Comments