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Re: PVC PIPE????????

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Posted by James Zdunic on October 7, 1999 23:57:05 UTC

Another negative point is weight. Schedule 40 is the thinner stuff, and is still fairly thick and dense. If an equatorial mount is used, then your counterweight is thick and dense also. Portability is not to great, especially if hiking it out to that dark spot. Dampening is also a problem associated with excessive weight. Any vibration caused by slight movements (bumps, etc.) take longer to settle down. This can cause problems with photography, and general viewing. I would suggest using thinner, lighter material. I made an equatorial mount of PVC, and plywood and it worked well, but I only used a short section of 4", and short section of 2" with a schedule 80 TEE. 10" PVC is massive, especially if a long f ratio is used.

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