Colors got rich and creamy with and without narrowband filter. This frame was composed of good data taken during 6 nights. I have excluded all data containing satellites, aircrafts, or blur.
There look to be many straight dark filaments east to west or vice versa divergent toward west or from orion toward Eridanus almost all over the area. North is up, and east is to the left on the frame.
"Kompaneets model fitting of the Orion-Eridanus superbubble II: Thinking outside of Barnard's Loop" by Pon A et al 2018:
arxiv.org/pdf/1606.02296
Equipment: Sigma 28mmF1.4 "Art" , IDAS NB12 Dual Narrowband Filter or IDAS Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding
Exposure: 12 times x 1,800 seconds, 10 x 900 sec, 11 x 240 sec, and 20 x 60 seconds at ISO 6,400 and f/3.5 with NB12 Filter and 18 times x 900 seconds, 10 x 240 sec, and 17 x 60 seconds at ISO 1,600 and f/3.5 with Clear Filter
site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile
Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild. Sky was dark, and SQML was 21.69 at the night.
