WR134 im Dual-Schmalband (Ha & Oiii)

Wolf-Rayet 134 processed to mimic the HOO Hubble Palette

This was my first proper attempt at processing with PixInsight. (I have less than 10 days of my free trial and so far I’ve produced one image).

Unfortunately, I was unable to get my actual target to show up as it should, so this attempt wasn’t technically successful, but I’m somewhat pleased with the final result. I will revisit this target sometime in the future when I have better equipment to give it justice.

The region centres on WR 134, a Wolf-Rayet star located in the constellation Cygnus, and the Crescent Nebula (NGC 6888), a prominent emission nebula formed by the powerful stellar winds of a massive star. This area is rich in ionized gas, producing striking emissions from hydrogen (Hα) and oxygen (OIII), which glow red and blue, respectively. The interaction of stellar winds with the surrounding material creates intricate filaments and structures, making it visually dynamic and scientifically significant.

Acquisition:

Shot in Bedfordshire, UK, Bortle 5
13hrs 50min across 5 nights
240s & 300s subs + DBF

Equipment: Samyang 135mm @ f2.8
SVBony SV220 Dual Narrowband Filter
ZWO ASI533MC-Pro -10°C / 101 Gain / 10 offset
SWSA GTi + NINA & PHD2SV165 30/120mm + ASI120MM Mini + IR/UV Cut

PixInsight Processing (workflow stolen from Cuiv):

WBPP with 2x Drizzle
GraXpert BE
BlurX
NoiseX
Statistical Stretch
StarX
Narrowband Normalisation
Curves + Colour Stretch
Pixel Math
Star Reduction

CC/processing tips are welcomed!