Subs
Ha 20 frames 300s
Oiii 19 frames 300s
Sii 21 frames 300s
Pixinsight
Blur Ext
Graxpert
Seti Astro Statistical Stretch
LRGB Combination
Curves and Masks
Unsharp mask
Stars
LRGB Combination (RGB) for stars from subs
SPCC
Seti Astro Star Stretch
Add Stars Back
Lightroom
Small adjustment to black point and shadow
Small adjustment to texture and clarity
Radial mask around teal area at end of trunk and reduced cyan blue saturation to remove some mottling,
Info
IC 1396 is a large circular region of glowing gas and dust in the constellation of Cepheus and is located about 2400 light-years from Earth. Measuring approximately 100 light-years across, this region is energized by a bluish central multiple star called HD 206267.
The ionized gas glows bright while dark dust concentration in the area can also be seen.
The Elephants Trunk, IC 1396A, is one feature that stands out prominently in images taken of the area. Pressure from bright stars in the core blows dust from that area leaving behind a darker region at the center of the nebula while compressing dust around the edges, which drives new star formation. As a result, up to 250 young stars- all less than 100,000 years old, have been detected in infrared images taken of the Trunk region in 2003. The Trunk itself is about 20 light-years long.
greg.lynes
