Skip to main content
Prints and Wall Art since 2004
Tel: 0203 286 0822
Home > All Images > 1997 > September > 9 Sep 1997

Images Dated 9th September 1997

Choose from 11 pictures in our Images Dated 9th September 1997 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.

Keck I and II observatories on Mauna Kea, Hawaii Featured 9 Sep 1997 Image

Keck I and II observatories on Mauna Kea, Hawaii

Keck observatories. Domes of the Keck I (at left) and Keck II optical telescopes at sunrise at the Mauna Kea observatory in Hawaii, USA. Keck I is seen partially open. Each telescope has a 10 metre diameter mirror to focus light. The mirrors are made up of 36 hexagonal units with a 1.8m diameter which are mounted on computer-controlled motors that make tiny adjustments to keep astronomical objects in precise focus. The two telescopes can be used to observe the same object and can have their signals combined by interferometry to obtain a more accurate image. In 1997 the Keck telescopes are the largest optical telescopes in the world