Distance: 1,500 ly
https://en.wikipedia.org/wiki/Medusa_Nebula

Equipment configuration and exposure data:

Mount: Orion HDX110 German equatorial mount controlled by TSXPro (Software Bisque) via EQASCOM
Telescope: Celestron RASA 11 V2. 11" Rowe-Ackermann Schmidt Astrograph, 620mm FL, f/2.2
Imaging camera: ZWO ASI2600MC Pro. Gain 100; Offset 21; Filter: IDAS NBZ.
Image capture scale: AS/P=1.237" (i.e., unbinned). Resized to 50% for display.
Image capture software: Software Bisque TSXPro Camera Addon
Exposures: Best 8 of 10; 5 @ 360s, 3 @ 480s. Calibration: 16 bias frames, 13 darks, 9 flat frames; Autoguided.
Guide camera: ZWO ASI120MM Mini. Autoguide software: PHD2 Guiding 2.6.10dev2. Tracking: ~0.5"-0.6" Total RMS.
Post processing software: ImagesPlus6.5; LuminarAI from SkyLum; ThumbsPlus Pro 10.

Source image: 20220125_Medusa-Neb_CombExcAvg-IPddp-LumAI-TPadj1.jpg