Kevin,
Perhaps that is it. ?I am no expert so I am speculating with my thoughts. ?However, I do not understand how the aluminum would continue to cool and the carbon fiber not? ?Won't each type of material cool to the ambient temperature of the air? ?That means both scopes should equalize at the same temp, shouldn't they? ?I don't think one (the aluminum) could become cooler than the actual temp of the air, could it? ??
Paul Atkinson