Gum 15 HaRGB

[rat156]

Here's Gum 15, a quite dim object.

Another processing challenge as the Ha washes out the RGB to leave a very pink nebula. I managed to massage the data in PS to get back most of the colour, but it's still not quite what it should be.

Larger version here (https://flic.kr/p/D7NipF)

Cheers
Stuart

[rustigsmed]

I've got to say that looks simply beautiful Stuart, what an awesome nebula, well framed and captured - despite the faintness.

just out of interest what type of method do you use to blend the Ha in? do you follow the starizona options? https://starizona.com/acb/ccd/software/ps_hargb.aspx

Cheers

Russ

[Placidus]

Delicious as it is. Well done.

If you have an [OIII] filter and a spare night or two, there seems to be quite a bit of it:

http://www.eso.org/public/news/eso1420/

Very best,
Mike

[rat156]

Hi Mike,

Thanks, I don't think that I've ever had an image called delicious before!

I also found the image you linked to, but I think the blue in that image is reflection nebulosity rather than OIII emissions.

Here's 30 minutes of OIII quickly processed together (which shows I need to do some flat frames!!), seems to be nothing there.

Cheers
Stuart

[Placidus]

There goes that theory!