Silhouette of people watching sunset at observatory

architecture background people blue sky cloud color image copy space dome dusk five people hawaii horizontal man mauna kea mid adult mid adult men mid adult women night observatory outdoors people photography remote scenic view selective focus side view silhouette standing sunrise sunset united states unrecognizable person watching woman 30 35 30 40 30's 30s 35 40 5 adult after dark america american americas back lit back lit backlit color colour dark dawn daybreak daytime evening fellow female five gal gentleman guy hi human human being lady lookout male morning negative space nightfall nighttime nite north america observing outdoor outside person scenics setting sun sky sundown thirties thirty twilight us usa united states of america us usa viewing watchtower white space women