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12.5 truss tube dobsonian visual system For Sale

Price - $1,500.00

Ad Number: 138605

Posted: 30 May 2018

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For sale: Home built, tough 12.5 in (f4.5 Swayze primary) aluminum truss tube Dobsonian telescope system with optics, Telrad, 4.5 inch Starblast as a superfinder, and a Tom Osypowski single-axis Compact Platform, old version of Sky Commander, a couple optics, and a "child's observing chair" to help shorter people. The system is fitted with a working older version of Sky Commander.

I bought the Dobsonian from a friend of the builder. The builder reportedly abdicated to a C11 and never or rarely used it. It sat lonely and dejected in a garage. That was more than 10 years ago, as I bought it to satisfy aperture fever a little over a decade ago and began adding the other pieces and parts. It is not as polished as the beautiful wooden dobs, but this system is easy to operate and is a good visual system. The addition of the Sky Commander and Tom's Compact Platform really help. I am moving and downsizing. While I have used this system with an astro-video system (shown in one picture but it is not for sale), it's stability is not quite good enough to capture long integrations, but it is a Wow visual observing device when I do outreach with people. The primary has been cleaned once and could use it again. Comes with the list shown below. I modified the tight rack-and-pinion focuser with a wooden non-linear knob that makes focus easy. I also use the chair to house the primary box. I slightly shortened the aluminum truss tubes so I could reach focus with a MallinCam astrovideo system. I will sell pieces of this system only if know one buys the whole thing, but it's a great whole system.

I will NOT ship, but if serious, I will drive 2 hours from Crozet VA to meet a definite buyer and a definite price. However, it is MUCH better that you come and "kick the tires." I am located 2 miles from Exit 107 on Interstate 64 (about 15 miles West of Charlottesville).

Dobsonian with original ground board, 4.5 inch Starblast finder, Telrad, primary box cover, shroud, dew/rain cover
The Tom O. single axis platform and my 10+ yr old version of Sky Commander (the box and wires but not the pieces melded to the primary box)
TV 35mm Panoptic and the 2 inch Barlow
Laser Collimator and Telrad and one 1.25/2 inch adapter
Variable height observing chair


  • Condition Very good
  • Location Crozet VA USA

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