Probably anyone who has taken a look at that photograph (presumably including the photographer himself) must have seen the blue (O-III) bubble to the left of the large-area part of VMT 10, around the three stars HD 48099, HD 47756, and HD 47984. However, it was formally discovered in April 2021 and now it is called PaRasMoMi 1 (Patchick-Rasool-Mohan-Mishra 1):
There is a curved filament, which looks relatively bright in O-III on the cloudynights image. Has anyone of you observed (or tried to observe) this filament (or anything else of PaRasMoMi 1)?
I tried on Tuesday this week, but did not succeed, with my 20" Dobsonian at 128x - 256x with an O-III filter.
On the same occasion, I was able to see the brightest part of VMT 10 on its eastern side, but unable to see SNR G206.9+2.3