IC 1396 - Elephant’s Trunk Nebula. Shot with Ha/OIII and SII/OIII narrowband filters.
See below for stacked and stretched, and sample sub-exposures for each filter.
Acquisition Date(s): 28 June - 06 July 2025
Camera: ASI2600MC
Filters: Optolong L-Ultimate and Altair Astro SII/OIII 3nm
Exposures: 27x600s and 151x300s (L-Ultimate) and 42x600s (Altair)
Total Time: 24 hours and 5 minutes
Processing: PixInsight
L-Ultimate - All 27x600s exposures stacked and stretched
L-Ultimate - One 600s frame
L-Ultimate - All 151x300s exposures stacked and stretched
L-Ultimate - One 300s frame
Altair SII/OIII 3nm - All 42x600s exposures stacked and stretched
Altair SII/OIII 3nm - One 600s frame