Is this a bubble? Gabriella Mistral

[Nikolas (Nik)]

A question for wiser heads

I was reprocessing some older Gabriella Mistral images and found this "bubble" pointed to by the arrows.
I used the Optolong L-Ultimate to obtain the image and Reprocessed it in Pixinsight
I may have seen traces of it in other images but this one seems very pronounced. is it really a thing?

[Nikolas (Nik)]

no one?

[RB (Andrew)]

Nup....

[Nikolas (Nik)]

Originally Posted by RB

Nup....

LOL Helpful mate

[kosborn (Kevin)]

It may well be real, but it's not named. A good project would be to get heaps of OIII data at a longer focal length and see how it looks. It wouldn't be the first time something new was found by an amateur astrophotographer.

[JA]

You're right to ask Nik, since it does have a bubble vibe. As per Kev's suggestion, keep at it and before long it could be Nik's Bubble.

Best
JA

[Paulyman (Paul)]

I just had a look at my Oiii data from January last year and I can see it, although I only see the arc in mine with some small zwo filter haloes around the two stars. Never noticed the arc when I processed it. I only have 2 hours of data though so it is weak, would be worth gathering some good exposure time and see if what appears to be a shell in your data starts coming away from the noise floor rather than just being filter reflection.

[Paulyman (Paul)]

So I just searched the Top Picks on Astrobin for NGC3293 and this image by Steeve Body shows it the best. His only shows the the arc that I see but there does appear to be a large patch of Oiii in that area that it is a part of, maybe a shock front rather than a bubble?

https://astrob.in/r2hx8f/B/

[Nikolas (Nik)]

Thanks for confirming guys, Paul, it looks like I may have inadvertently managed to isolate it somehow by using your pixinsight techniques and I reckon BlurXterminator plays a big part?, I'm still a novice but learning as I go, it looks like the Optolong L-Ultimate may have just the right balance to bring it out?

[Dave882 (David)]

Looks like you could be on to something here Nik! Irrespective- cracker of a shot!!

[LtChestnut (Chester)]

I noticed it in my Oiii data when I was working on my image a few months back. Pretty certain its a bow shock from one of the stars in the area. I don't think its been formally studied though, couldn't find anything on it at least.

[Nikolas (Nik)]

Dibs on Nik's bubble lol

[Benjamin (Ben)]

Don’t know about the bubble but it’s a wonderful image!