There are various theories about the distinction between NGC5906 and 5907, and I don't know which one is true, but for the time being, 5907 is the main body of the galaxy and 5906 is the nebula in front of it.
The 5906 looks like an exoplanet inside the 5907, but it seems that it has nothing to do with it because it just happens to overlap from the earth. I'm sorry, but this is also not reliable information.
The dark nebula is more flashy here, but its shape, size, and inclination are similar to those of the Needle galaxy.
Place: Backyard East Pattaya (Bortle Class 6, Moon Phase 59.4%)
Date:1st / Jun / 2021 23:37(UTC+7) Start
TS TSRC10T Carbon Truss Prime focus (250mm F/8 f/2000mm)
L: 12 X 120Secs Total 24minutes
R: 10 X 120Secs Total 20minutes
G: 10 X 120Secs Total 20minutes
B: 10 X 30Secs Total 20minutes
Total 1Hour 24minutes
MonoBin: LRGB BIN2
Gain:All Filter 120
CCD: ZWO ASI294MC Pro
Filter: SVbony LRGB filter set.
Mount :iOptron CEM70G
Guide: SVBony 30mm F/4, ZWO ASI120MC-S
Controler: ASIAIR-Pro Dither
Pre-Processing APP Drizzle X 2.0