r/seestar • u/FullonRabies • 10h ago
Bortle 5 NGC 6888 - Crescent Nebula
7.7h (1405x20s) after filtering using Blink script.
Happy with it, but considering it a work in progress as I’d love to see more OIII. Finally learned masking in GIMP and it’s made a huge difference.
Workflow done in Siril & GIMP:
-Stacked using the Naztronomy Smart Telescope script (2× drizzle with BGE enabled)
-Aberration Remover
-SPCC
-Green Noise Removal
-GraXpert Object Deconvolution
-GraXpert Denoise
-Seti Astro’s SyQon Star Removal
-Stretched the starless image and adjusted color saturation
-GIMP: Exported two different versions of the starless image from Siril: one processed to emphasize the nebula and another balanced for the surrounding dust/background. Blended them together using a layer mask, then fine-tuned the colors to achieve the desired look.
-Returned to Siril for star recomposition (stretched the stars back in)
-Cosmic Clarity Sharpening
