View Single Post
  #25  
Old 04-05-2013, 07:11 PM
strongmanmike's Avatar
strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,681
Clear here tonight (will drop to -2C tonight) so I just Polar Aligned the bolt pattern that will hold the metal pier While standing on the North side of the bolt pattern template and using binoculars I sighted the SCP (I know exactly where it is to within a few arc min ) then carefully panned down and had my son drive a star picket into the ground at that (true south) point some 40m from the footing. Now when I sink the bolt pattern into the wet concrete during the day, I can just point the arrow that I have drawn on the template board representing the polar axis of the NJP, at the Star picket - easy!

Mike
Reply With Quote