The dome top is comprised of nine sections; four triangles and five squares.  Two of the squares are actually the dome opening, so I had seven pieces to build that would be permanently attached; four triangles and three squares.  Each rectangular piece is attached to the dome base at an angle of 45 degrees; the triangles are attached at an angle of about 34 degrees.   It was a nice review of solid geometry and no small bit of carpentry getting all the cuts at the correct angles.  Here is one of the completed triangles.	Here are the triangles and squares all ready to go just before assembly.  The sections are made from 1/2-inch exterior grade plywood glued and screwed to premium 1x4 pine boards.	The dome was assembled using clamps to hold everything in place before screwing everything together.  This allowed me to adjust things just a bit to assure a good fit all around (read "adjusting for slop").  Notice the peach tree branches at right.  Again through no action on my part the tree had become diseased and needed to be removed.  So the unintended deforestation project continued unabated; I removed the tree a month after finishing the building.
The dome is complete!  There is still lots of work to do to seal everything, but at this point I just couldn't help installing the telescope just to see how it would all look.  The dome's "slot" is framed with 1x6 pine.	The slot door is in two pieces; the top, shown here, will have hinges attached to its back and simply fold back.	The second slot door piece is shown here; it is held in place by the top door and by some hook-and-eye attachments near its base.  Once the top door is folded back this piece is easy to remove.