A tale of two globs

[Camelopardalis]

Had a good night out at Mt Blackheath last night and here's some initial stacks (and tweaks) of a couple test subjects :lol:

C8 Edge HD on EQ6 (unguided), with Canon 1100D 20s exposures at ISO1600
47 Tucanae - 30 subs at f/10 (native)
Omega Centauri - 45 subs at ~f/7 (with 0.7x reducer)

I struggled a bit with the colour balance on 47 Tuc, can't quite figure out what to do about the central pink ring :confused2: no doubt it needs a good few more subs to give similar definition and balance? I've cropped 47 Tuc so that the image should have more or less the same image scale as Omega Centauri, and the result is staggering! Love both of these objects :)

[cometcatcher]

Nice shots Dunk. That's interesting about the scale. Omega is wider and flatter, 47 Tuc is smaller but has a more intense core.

[Camelopardalis]

Thanks Kevin! I'd taken a bunch of shots of 47 Tuc and then moved to Omega Centauri for comparison and realised it didn't fit in the FOV very well :lol: hence the change of focal ratio. Even with these exposures though, they are clearly quite different in character.

[LightningNZ]

I'll echo Kevin's sentiments - nice shots!

As to the shape - that's pretty interesting stuff. It's now suspected the Omega Cen is actually the core of a small galaxy, long stripped of the rest of its stars by the Milky Way. Evidence for this comes from a) the weird shape and b) it contains 3 separate generations of stars - globs normally have just the one.

47 Tuc for me is the greatest glob in the sky. Just a spectacular object in any size of scope. The intensity of the core is remarkable.

Cheers,
Cam

[Camelopardalis]

Thanks Cam! Very interesting stuff...but even if Omega Cen is an ex galaxy core, I'd expect it to be a little denser than that :confused2:

47 Tuc is my favourite :D it just has more character!