Sadr Region (IC 1318) and the Crescent Nebula (NGC 6888) in Cygnus

Description

This widefield image highlights one of the richest regions of the northern Milky Way: the glowing hydrogen clouds and dark dust lanes surrounding Sadr (Gamma Cygni), the central star of the Northern Cross.
To the right of the field lies the Crescent Nebula (NGC 6888), created by fast stellar winds from the massive Wolf–Rayet star WR 136. The winds carve out a glowing bubble of ionized gas, producing the nebula’s thin arcs and filamentary structure.

Captured over 18.5 hours of total exposure under Bortle 8 city skies, the image reveals the faint, intricate details of this complex star-forming region.
The final composition is cropped from the 135mm framing.

• Camera: ZWO ASI533MC Pro
• Lens: Samyang 135mm f/2 (used at f/2.8)
• Mount: Sky-Watcher Star Adventurer GTi
• Filter: Optolong L-Ultimate
• Guide Camera: ZWO ASI120MM Mini
• Guide Scope: Svbony SV165
• Control: ZWO ASIAIR Plus

Exposure Information

• Lights: 222 × 300 seconds
• Total Integration: 18.5 hours
• Calibration Frames: Darks, Flats, Bias
• Gain: 101

Processing Software

Siril • StarNet • Adobe Photoshop

Capture Details

Dates: 8–11 NOVEMBER 2025
Location: Jaipur, India