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