The Segment Handling System (SHS) and its precision robotic hand, which traverses under the bridge
Aerial Service Platform (ASP) to access M2 and M3 plus Elevator
The Segment Handling System (SHS) and its precision robotic hand, which traverses under the bridge. (inset)
TMT Telescope Structure review meeting participants in Japan
Thirty Meter Telescope Primary Mirror Segment. The TMT primary mirror includes 492 hexagonal segments, each about 1.44 meters (56.6 inches) across corners. The segments are closely spaced, with gaps between the segments only 2.5 mm (0.1 inch) wide. The segments will be made from Ohara Clearceram zero expansion glass ceramic. The glass will be 45 mm thick (about 2 inches). Each segment has a support system that holds it in position without distortion from gravity. Twenty-seven thin flexures are attached to the back of the mirror and the weight of the segment is reacted by a whiffletree lever system that spreads the load in the correct proportions to avoid distorting the shape of the segment. The lateral support (required when the telescope points towards the horizon) is provided by a central metallic diaphragm recessed into the glass.
A painting by Business Manager Phil Lindquist was selected for the "Contemporary Masters, Artistic Eden IV" exhibition at the Pasadena Museum of History. The painting, "Pasadena Power", oil 30" x 30", shows the view of a power plant across from the TMT Project Office.
TMT primary mirror blanks, produced by OHARA in Japan.
TMT unveiling at the CASCA 2014 conference in Quebec City, Canada.
