IC1318 Butterfly Nebula
The The Butterfly Nebula is part of the Sadr region of emission gases. Each of the wings of the butterfly are about 50 light-years across and lie about 3700 light-years from Earth. Sadr, also called Gamma Cygni, is the bight star in the middle. Open cluster NGC6910 can be seen above Sadr, and dark nebula B 347 appears as a small arrow in the center of the left wing of the butterfly. North is at the top.

This is my 2nd image of the Sadr region, this time using narrowband filters to take advantage of the relatively bright Sii and Oiii areas.

Scope/Mount: StellarVue SV70T Refractor with SFFR-70APO Focal-reducer/Field-flattener, Celestron CI-700 Mount
Camera: ZWO ASI1600MMC monochrome with ZWO LRGB filters and Antlia 3nm SHO filters
Guiding: QHY5L-IIM through Orion Thin OAG, PHD guiding software
Exposure: Sii: (12) 300 secs @ gain=300, Ha {12) 300 secs @ gain = 300, Oiii: (12) 300 secs @ gain = 300, RGB: each channel (10) 120 sec @ gain=200
Software: Nebulosity, Pixinsight
Comment: 09-20-2025, Tierra del Sol, CA, good conditions, palette = (H)SHO plus RGB for stars.