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You mentioned 4 cardinal spikes in your Mak. Does it have a 4 vane spider? I thought the secondary was on the back of the thick primary front element but I understand there are many different Mak designs.
You shouldn’t be seeing 4 cardinal spikes at all through a central obstructed telescope unless there are some vanes in place or square obstruction (unlikely). An SCT with a huge central obstruction produces no spikes but changes the Airy disk in terms of which rings are brighter.
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