Sh2-261 (Lower's Nebula) & friend

Target: Sh2-261
Date: 2024-01-10
Location: San Antonio, TX (Bortle class 7)

Mount: IOptron SkyGuider Pro
Camera: Nikon D5300 astromod
OTA: William Optics Zenithstar 61II + Field Flattener FLAT61A
Focal/Aperture: 360 mm @ f/5.9
Filter: Radian Telescopes 2" Triad Ultra Quad-Band Narrowband Filter
H-beta:5nm, OIII:4nm, H-alpha:4nm, SII:4nm
Guide scope: William Optics Uniguide 32mm
Guide camera: ZWO ASI120MM mini + ASIair Pro

Lights: 36x600s (total exposure: 6h)
Calibration frames: 13xdarks, 20xflats, 20xbiases
ISO 1600

Stacked and Processed in PixInsight.