Personal preferences vary depending on the type of tube, with many preferring the “sexy” look of the carbon fiber tube and others preferring the classic look of the aluminum tube.This paper will compare the characteristics of aluminum tube and carbon fiber tube for your choice.01.Cooling
Aluminum tubes can quickly adapt to night air, while carbon fiber tubes can retain heat and can be a problem depending on size and how they are made.Different carbon fiber tubes retain heat in different ways. In the case of 102 tubes, a relatively thin carbon fiber tube without any internal lining is used for faster cooling.02.Durability
Aluminum tubes are powder coated and carbon fiber tubes are plastic coated.Too tight a ring on a carbon fiber tube can cause pipe marks.Shallow marks can be polished, deep marks can not be polished.However, ring marks caused by excessive tightening shall not be regarded as defects.A little care in tightening will make a difference.The aluminum tubes are threaded to accept aluminum fittings, firmly connected and perfectly aligned.Carbon fibre tubes are held together by epoxy resin.There have been cases of parts falling off imported telescopes on the market, much of it due to poor bonding.03.Thermal Expansion
Carbon fiber tubular telescopes are often chosen because they do not shrink when the temperature drops and are thought to be better at maintaining focus.But what people don’t recognize is that the lens gets shorter in focus as it cools.So carbon fiber tubes really don’t have any advantage.It would be true if optical devices were unaffected by temperature changes, but this is not the case.It’s not that aluminum is any better at this, because when telescopes cool, they’ll never have to adjust their focus.As the temperature drops, all telescopes need to refocus.04.Heavy Volume
It would be true if optical devices were unaffected by temperature changes, but this is not the case.It’s not that aluminum is any better at this, because when telescopes cool, they’ll never have to adjust their focus.As the temperature drops, all telescopes need to refocus.
Link to this article：Characteristics Comparison Between Aluminum tube And Carbon Fiber Tube In The Application Of Telescope
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