These are my five. The first four are celestial jewels, all four being naked eye objects. All are very distinct in their appearance, having their own signature quirks and stellar chains:
Omega Centauri
47 Tuc
NGC 6752 in Pavo
NGC 2808 in Carina
The fifth is the complete opposite to the others. It is small, faint, very distant and a bugger to make out from the massive star field that is M7 that it happens to be in the same line of sight with. I love chasing this one down as I also use it as a gauge on current seeing conditions. It resists resolution to all but larger apertures visually, and then it demands good conditions to make out just a handful of stars. This tiny GC is one of my all time favourite objects, mainly due to where it sits and the half dozen other objects that are also in the same line of sight at M7:
NGC 6453
I'm managed to sketch the first three noted. I'm hoping to sketch the other two next year.
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