Clouds are not giving me time for faint stuff so have to be satisfied with the big bright lights! Gives me processing practice anyway. I literally had to clean mould off the observatory walls yesterday. It's been one long cloudy summer.
Omega Centauri: GSO 10" F4 Newtonian, 104 x 30 seconds, full spectrum Canon 1100D, Baader MPCC MKIII, Baader UV/IR cut filter, HEQ5 Pro unguided from mouldy Rigel Observatory.
I've put this in my "Brilliant works by others" folder, because of the good colour.
Almost everyone shows Omega (and other globulars) as on average white to blue-white. But like most globulars, it's composed overwhelmingly of very old, cool (orange-red) stars with a mass less than that of the sun. A look at the colour magnitude diagram of Omega or any typical globular shows that (with the exception of a handful of blue stragglers) the brightest stars are mostly yellow to yellow-orange. The very brightest are red giants.
If one has a look at a sufficiently bright globular in a scope that's big and fast enough to collect enough light to see colour easily, it is strikingly yellow.
Showing a globular as on-average white has the excuse that one is trying to show differences. All those pretty blue globulars that folk post are just plain wrong.
A nice result on a rarely imaged globula ....Mike is essentially coorect too....convention can cloud our visual judgement to ignore the science pretty easily
Let me assure you that any portrayal of accurate colour is by complete accident! First time I've imaged this (or much else) with the full spectrum Canon.
....Mike is essentially coorect too....convention can cloud our visual judgement to ignore the science pretty easily 
