Well, this is an f/10 Mak, an early model, and not the most sophisticated of the Intes Maks (MK-65, sold in 1994, perhaps made earlier, according to the documentation I got with it). Maybe it's not ideally set up and maybe the collimation is not as good as I thought - though visually it seems to check out alright. Modern SW Maks are better than this scope for sure. Even the central obstruction is quite large on this scope for a Mak (something around 35% from memory).
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