[strongmanmike (Michael)]

Originally Posted by alpal

Hi Mike,
You did well.
Look at what I got:
the FWHM values I were getting were 4.9 arc seconds measured with Maxim DL.
https://www.flickr.com/photos/247194...etaken-public/

cheers
Allan

Aaah well, we all manage to create muck occasionally

Originally Posted by rmuhlack

Impressive Mike. Good to see another example of M83's extended halo and loop. With my 8inch newtonian and similar integration I was able to reveal the loop with a heavy stretch, though not with the level of detail and clarity you have in your image (which comes from mountain top seeing/transparency, more aperture, faster optics, mono sensor etc as well as your deft processing). Nicely done.

Have you seen the earlier 1997 Malin and Hadley paper (also cited by Barnes et al 2014) which also mentions M83's extended halo and loop?

Thanks glad you liked it Richard yes saw that paper and it will be linked to from a famous site tomorrow

Mike