neutronman61:
Staring at the Sun
neutronman61:
Mount Lemmon_Skynight observatory
neutronman61:
Mount Lemmon_asteroid hunting
neutronman61:
Mount Lemmon_asteroid hunting2
neutronman61:
Mount Lemmon_army radar
neutronman61:
Mount Lemmon_army radar2
neutronman61:
Mount Lemmon_Tucson