In this extra seventh session held in the McGregor Observatory, the focus was on figuring. Two more mirrors were declared done, the 4th and 5th of this class. Jay used his Ross Null test setup and showed the rest of us how it worked.
Down in the bunkhouse, the grinding machine became operational (click thumbnail for movie link).
Ross Null Lens in place
Ross Null Setup
Fran & Dave are Done!
On to a 12-inch Cass
Testing
Joyce presses her lap
Bad Lap Day
Erin is almost done.
It Works!
Site Work: Flanders Pavilion
With the good weather here, work has again begun on the Flanders Pavilion. Today we poured a concrete door sill (for a very large door), in preparation for leveling the interior floor to final grade.
