I have another suggestion for this month's challenge:
Shall we invite the imaging folks to join us with nailing the two exceptionally faint GC's? There are a couple of objects suggested this month that would be extremely difficult to spot. I don't think that there are too many people with 36"+ scopes out there capable of spotting a 17.3 magnitude GC. Yet many of the IIS imagers would be quite capable of doing a good job of it.
Suzy, Steffan has also suggested M13 & M57, plus there is also M22. Actually, any Messier object is well within range of a 6"er.
This month sees a jolly lot of candidates. From those suggested, here is my preference. Suggest another combo if you like:
Easy: Omega Cent., M4, M13 & M75 (the Messier ones being seen in the northern hemisphere)
More challlenging: NGC 6453, 6256, 6426, 6235.
"Good Luck": UKS-1 & AM-1
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