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.

• Coordinates: RA 20h 10m 14s, Dec +36° 10′ 35″ (Cygnus)
• Optics: William Optics SpaceCat 61
• Camera: ZWO ASI2600MM Pro
• Mount: Sky-Watcher Wave 150i
• Filters: Antlia 3nm Hα / OIII / SII, 36 mm
• Integration: 8h 20m — Hα 2h 30m (30 × 300″), SII 2h 30m (30 × 300″), OIII 3h 20m (40 × 300″)
• Published: 2025-08-03 — on AstroBin