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Fan shot
Here it is. You can see the main cell with the push/pull collimation screws. The mirror cell is the small one inside. You can see its edge at the bottom. The back of the mirror has some black fabric and I peeled the center portion to expose the glass and velcro the fan. You can see the glass through the fan. It's a sleeve bearing fan so hopefully no vibrations. To give you an idea of the scale the OD of the OTA is 130mm.
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