WR 134 in Cygnus, a Wolf-Rayet star roughly 6,000 light-years away — a massive star in its final act, shedding its outer layers in a ferocious wind. The ghostly blue OIII arc is the edge of a wind-blown bubble where that material slams into gas the star expelled earlier in its life. The OIII signal is what makes this target, so it got an extra 50 minutes: 8h 20m of 3nm narrowband in total.
All renders are in the gallery folder, and the image is on AstroBin.
Acquisition details
- Total integration: 8h 20m — Hα 2h 30m (30 × 300″), SII 2h 30m (30 × 300″), OIII 3h 20m (40 × 300″)
Equipment
- Telescope: William Optics SpaceCat 61
- Camera: ZWO ASI2600MM Pro
- Mount: Sky-Watcher Wave 150i strain-wave mount
- Filters: Antlia 3nm Hα / OIII / SII, 36 mm
- Accessories: MeLE Quieter4 mini PC, Pegasus Astro FocusCube 3
- Software: N.I.N.A., PHD2, Green Swamp Server, PixInsight, Adobe Lightroom Classic