Quote:
Originally Posted by Camelopardalis
Rather than CF, just carefully cut some holes in the tube and add some fans...should keep it equilibrated on warm summer evenings...
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The MN190 already has a rear fan port behind the primary, and a ventilated focuser plug, providing a flow through path. I use a filter medium in the focuser to prevent dust getting into the tube or on the mirrors or corrector internal side, fan is oriented to exhaust air from the tube pulling air in through the focuser filter. No issues with equilibrium.
CF was a consideration for weight saving only.