NGC 3109 with blended in H alpha

[Stevec35]

Hi to all

Having a clear night on Saturday and not being able to do much else given the moon I decided to blend in 4.5 hours of H alpha into this very interesting galaxy. The result may be a bit technicolor but there's a lot of star forming activity going on.

Cheers

Steve

http://members.pcug.org.au/~stevec/ngc3109_STXL6303_RC14.htm

[strongmanmike]

Technicolour :question:...well, yes and looks good to me Steve, the HII is highlighted nicely, which was your point :thumbsup: Bit of a dotted background (Decon? :help:) could probably be smoothed out a tad but overall it's a great shot of what could otherwise have been a bit lack luster, instead it is a very interesting image, thanks for imaging it :).

Mike

[Stevec35]

Thanks Mike. As far as I can recall I only used very mild decon but I do agree the background could have been better.

[clive milne]

Steve,
If I could make a suggestion; the scientific merit of this image would be enhanced if you also included (calibrated) Oiii data. (A mouse-over image that swaps the H alpha & Oiii would be instructive)
The distribution and ratio of these two gasses can be useful for inferring the relationship between the (gravitational) interaction of galaxies and the chemical evolution of their stellar populations.
What makes metal poor, dwarf irregular galaxies so interesting imho) is not so much their aesthetic appeal but rather the opportunity they give to observe the conditions which existed in most galaxies a long, long time ago.

best
c

[Stevec35]

I might give this a go if I get a chance with the weather Clive. Unfortunately I'm beset with mount problems at the moment which aren't helping.

[Ross G]

Great capture Steve.

The Ha regions are highlighted well.

Ross.

[Stevec35]

Thanks Ross. I tried to be as delicate as possible applying the Ha.

Cheers

Steve