Celestial hemisphere:  Southern  ·  Constellation: Ara (Ara)  ·  Contains:  HD148610  ·  HD148690  ·  HD148809  ·  HD148837  ·  HD148850  ·  HD148851  ·  HD148922  ·  HD148937  ·  HD148974  ·  HD148987  ·  HD148989  ·  HD149054  ·  HD149077  ·  HD149098  ·  HD149189  ·  HD149400  ·  HD149534  ·  HD149610  ·  HD149643  ·  HD149742  ·  HD149744  ·  HD149795  ·  HD149855  ·  HD149901  ·  HD149902  ·  HD149967  ·  HD150006  ·  HD150040  ·  HD150041  ·  HD150083  ·  And 13 more.
Getting plate-solving status, please wait...
The Fighting Dragons of Ara (and some little friends- PN Henize 2-169 and the wind blown bubble PCG11 around a Wolf-Rayet Star), Logan Carpenter
The Fighting Dragons of Ara (and some little friends- PN Henize 2-169 and the wind blown bubble PCG11 around a Wolf-Rayet Star), Logan Carpenter

The Fighting Dragons of Ara (and some little friends- PN Henize 2-169 and the wind blown bubble PCG11 around a Wolf-Rayet Star)

Getting plate-solving status, please wait...
The Fighting Dragons of Ara (and some little friends- PN Henize 2-169 and the wind blown bubble PCG11 around a Wolf-Rayet Star), Logan Carpenter
The Fighting Dragons of Ara (and some little friends- PN Henize 2-169 and the wind blown bubble PCG11 around a Wolf-Rayet Star), Logan Carpenter

The Fighting Dragons of Ara (and some little friends- PN Henize 2-169 and the wind blown bubble PCG11 around a Wolf-Rayet Star)

Equipment

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Acquisition details

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Description

Having imaged the Dragons with the Redcat 51, I decided to revisit the mythical beasts with the Askar 65PHQ and the ASI1600mmPro with more integration time.
While Pixel peeping (yes, I'm one of those people) I noticed a couple of small structures to the lower left of the fov. 
One of these I think is a tiny planetary nebula Henize 2-169.
But I also noticed a ring like structure (see arrow on Ha stack) and having a lot of trouble finding out what this is and does it have a name ( I know, me again asking "what's this called, what's that called...").
The B&W image is the Ha stack (drizzled) with just a simple STF and no other processing (other than cropping). It seems only be evident in the Ha although I did take a lot more Ha images than the other filters. The Ha colour appears to have been lost in the final image as I used and SHO palette.
Any info on this object would be greatly appreciated.
Ha stack.jpgPlanetary nebulae.jpg
Image24.jpg

Edit: I contacted Marcel Drechsler who was very generous with his time to get back to me extremely quickly with the information I was looking for about this object.
Thanks again Marcel.


Dear Logan, 
I'm very happy that you contacted me with your find.
I was able to identify the object.
It is "PCG 11", a ring of matter around a Wolf-Rayet star - so called "CircumStellar matter".
More information can be found here: https://academic.oup.com/mnras/article/360/4/1439/1079208

Cheers,
Marcel

PS: Look at this infrared image:
Bildschirmfoto 2023-05-30 um 09.38.43.png

Comments

Revisions

  • Final
    The Fighting Dragons of Ara (and some little friends- PN Henize 2-169 and the wind blown bubble PCG11 around a Wolf-Rayet Star), Logan Carpenter
    Original
    The Fighting Dragons of Ara (and some little friends- PN Henize 2-169 and the wind blown bubble PCG11 around a Wolf-Rayet Star), Logan Carpenter
    B

Sky plot

Sky plot

Histogram

The Fighting Dragons of Ara (and some little friends- PN Henize 2-169 and the wind blown bubble PCG11 around a Wolf-Rayet Star), Logan Carpenter