The Tulip Nebula, Sh2-101, blooming in Cygnus about 6,000 light-years away — an emission region sculpted into petals by radiation from young O-type stars. The same field hides one of the sky's most famous invisible objects: Cygnus X-1, the first widely accepted black hole, whose jet inflates a faint shock bubble near the Tulip. 11½ hours of 3nm narrowband across Hα, SII, and OIII.

• Coordinates: RA 19h 59m 55s, Dec +35° 16′ 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: 11h 30m — Hα 3h 50m (46 × 300″), SII 3h 50m (46 × 300″), OIII 3h 50m (46 × 300″)
• Published: 2025-08-21 — on AstroBin