First the midship gores had to be trimmed (okay, so I mismeasured) and the hangers attached. These joist hangers will hold the roof stringers in place until they can be screwed in more permanently. I've come to appreciate the things as a second pair of hands.
Here's the center gores in place. You can begin to see the shape of the roofline.
And the obligatory long shot :
So tomorrow the remaining gores will go into place, along with the arches that will help support the membrane. Saturday is roofing day. Keep your fingers crossed for weather, helpers, and that I've measured things at least marginally correctly.