Hi James,
Details for my Omega Centauri image as follows -
Single image
Polar aligned just under 1 arc minute
Unguided
Canon 600D ( stock unmodded )
Exposure 60 sec
ISO 3200
Sharpness 100%
Contrast 100%
Saturation 50%
Colour Tone 50%
Seeing conditions around Bortle 3 to 4
Hope this helps
PS: Tried ISO 1600 first at 60 sec then pushed up to ISO 3200
Star trailing was more evident above 90 sec
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