An image a day

Posts Tagged ‘summit

Sundown [44]

leave a comment »


The sun drops behind the cloud layer, hastening the night. In just a few minutes the stars become visible.


Written by arangodan

September 11, 2010 at 8:49 pm

Observation [45]

leave a comment »


The last rays of the sun bathe the observatories at the summit of Mauna Kea in golden light while the clouds below us tumble by.

The Canada-France-Hawaii Observatory (left) has opened its doors in anticipation of a night of astronomical observations. Observatories open their dome doors well before they begin observations in order to equalize the temperature inside the dome with the outside temperature (about 40° F). This stabilizes the air around the telescope, preventing convection currents that disturb observation

Written by arangodan

September 10, 2010 at 8:46 pm