Made some good progress today. Not finished with floor bracing, but tomorrow's weather is also looking good so I may have a complete floor to show for my weekend.
This first shot shows the fall-away grading (for drainage) and two layers of poly sheeting (to minimize moisture).
-------------------- WO 110 FLT
WO 66 Triplet
Modified Canon 450/XSI
Celestron C11
SkyWatcher EQ-6 Pro
Backyard (urban) roll-off observatory
One small but fearless dog (observing companion)
my astrophotos on flickr