Barn door tracker

  • Orignal article
  • Metric version with M6, 1 thread/mm. 25.4 TPI. Ratio between M6 and 1/4"-20-UNC is 1.27. So 290mm/1.27=228.34 mm from hinge (with same rotation rate as in article)
  • Straw along hinge for polar alignment
  • Set tee nuts with bolts and nuts
Tripod Metric bits
  • M6 bolts (easy to get)
  • M6 dome nuts (easy to get)
  • M6 tee nuts (clas ohlson)
Imperial bits (camera too)
  • 1/4"-20-UNC threaded bolt (gwr-fasteners)
  • 1/4"-20-UNC nuts (gwr-fasteners)
  • 1/4"-20-UNC tee nuts (ebay!)
  • 3/8"-16-UNC female to 1/4"-20-UNC female converters (Amazon)
  • 3/8"-16-UNC male to 1/4"-20-UNC male converters (Amazon)
Finder scope

-- StewartBoogert - 24 Aug 2013

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Topic revision: r4 - 25 Aug 2013 - StewartBoogert

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