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Oiii emission near the Flaming Star Nebula

Optolong L-eNhance Optolong UV/IR cut HOO Emission Nebula
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Daniele Borsari avatar
Daniele Borsari avatar
Hi,

Yesterday I finished processing my latest image of the Flaming Star and Tadpoles nebulae.



I used the Optolong L-eNhance filter and for RGB stars just a UV/IR Cut. I then made a HOO palette (H=R, O=(G+B)/2) and processed my image with my usual workflow with NarrowbandNormalization set on Mode 2.
On the final image I was able to see a little teal-ish smudge (I think an Oiii emission) on the top-right.



Have you already seen it in other images or is this just an artifact?
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andrea tasselli avatar
andrea tasselli avatar
It looks bona fide but you should check with Vizier/Aladin at the object's location to see what's there. At first glance it seems to match GN 5.11.2 but you should really check it online.
Brian Puhl avatar
Brian Puhl avatar
That's a reflection nebula.   Since your filter has a wider band pass, you're picking it up.  Don't remember the name, but it's in the current data set I'm working on
Daniele Borsari avatar
Daniele Borsari avatar
@Brian Puhl That seems legit. Thank you.
Brian Puhl avatar
Brian Puhl avatar
Here's a glance at it from my LRGB data.    It's pretty prominent, but my framing was a bit too tight to really get all of the reflection.     Some nice brown dust in there however.