SH-261 or Lower's nebula - is rarely imaged because it is in the constellation Orion, where there are many better looking and more colorfull nebulae (such as the Horsehead and M42)
This Narrowband image (Artificialy coloring the Ha, S2, O3 to RGB )shows that this nebula is very complex internaly.

S2-Ha-O3 image
Ha for 9 HRS bin 1
S2,O3 2 HRS each bin 2

30 min per RGB channel for star color
Total about 14.5 HRS

10" ASA Astrograph - F2.8
ASA DDM60 - no guiding :)
Imaged from my home in Gan-Yavne ISRAEL