[sjastro]

Originally Posted by Merlin66

Keep up the great work!
I think your results are excellent!
Well done!

Thanks Ken.

Originally Posted by Terry B

Nice.
It might be interesting to do an image shifting all of the colours. Use U for the blue channel and B for the green channel and the G data for the red channel. This would just shift all the colours to the blue and then compare that to the usual tricolour image.

Terry,

Thanks for the advice. One aspect I'll be checking is whether the colour balance has been effected by OII emissions which is the UV component of skyglow.

Originally Posted by David Fitz-Henr

Great work Steven, really interesting stuff here! A lot of UV showing in and around the dust lanes, I guess showing star formation at the "shock front" of the colliding galaxies.

Thanks David.

Originally Posted by SkyViking

Thank you Steven, that is one interesting looking frame, very cool.
It actually seems to confirm my result from a while back where I tried to create a synthetic UV image for the Carina nebula, by subtracting L and NIR from a Clear frame. The results were pathetic to say the least and I just discarded it as unworkable. But based on your results I think it might have worked, the S/N was just so low that I thought it wasn't right.
I might give it a try again, given that I don't have a UV filter.

Interesting concept Rolf. I wonder where the cut off point of your L filter is.
The Astrodon L filter for example cuts off at around 370nm. You might have very little data to play with.

Regards

Steven