Rcw 104

[kosborn]

This is RCW 104, a faint (magnitude 18) emission nebula around the Wolf-Rayet star WR 75 in the constellation of Norma. This seems to be a very rarely imaged object, probably because of its southern location and very low surface brightness. I could only find four other examples on Astrobin, only two of which actually show the object! It took about 6 hours of OII subs to get any detail in the oxygen shell, compared to about 2 1/2 hours of Ha. There are a couple of hours of rgb for the stars.

Acquisition details and a link to a larger version are here (https://www.astrobin.com/d1e529/) on Astrobin.

[marc4darkskies]

Looks like a challenging target Kevin! Very nicely done! :thumbsup:

[kosborn]

Thanks Marcus. It certainly was challenging! I think it could do with a few more hours of exposures...

[Dave882]

That’s a beautiful result! I just love that subtle oiii you’ve brought out. Great work!

[Startrek]

Kevin,
Kudos for taking on such a dim difficult target which is rarely imaged
Well done indeed !!
Cheers
Martin

[gregbradley]

Excellent image of a rarely imaged object.

Great work.

Greg.

[kosborn]

Thanks guys, much appreciated.

[strongmanmike]

I agree with the others and a very satisfying result I am sure. Good on you for hitting something different and interesting, very enjoyable :thumbsup:

Mike

[kosborn]

Haha, I was hoping for more than "enjoyable", but thanks anyway :lol:

[strongmanmike]

Err?..ooo-kaaaay...overcome with emotion and amazement...? :question: :lol:

Mike

[kosborn]

haha, much better. I like to have my ego pumped. :lol:

[Stephane]

Kevin, what an interesting target! So much nice detail despite being so faint. Thanks for sharing.

[Ryderscope]

That's a great result Kevin particularly with capturing the OIII within. I wouldn't have thought to try and capture OIII on an RCW catalogue object so you have inspired me to give this a go.

CS,
Rodney

[matlud]

Great image Kevin! Looks like a good object to go a lot deeper on and see what further details on the OIII shell you can reveal.
CS
Mat