Credit: TMT International Observatory
Fisheye view of the telescope primary mirror and telescope structure in broad daylight. The telescope is pointing vertically in direction of the circular enclosure opening. The secondary mirror, convex in shape, is seen against the sky background, held above the primary mirror by six structural beams (called “secondary mirror spiders”). The flat oval tertiary mirror is seen in the middle of the primary mirror, whose hexagonal segments are clearly defined in this image. To the left of the primary mirror sits the first-light instrument WFOS, a multi-object spectrograph working in seeing-limited mode. To the right, behind the telescope structure, we can spot the blue container hosting TMT’s adaptive system NFIRAOS. A telescope structure access platform can be seen partly on the top of the image.
