🔭 Mountaintop Observatory Site Lab: Airmass, Extinction, Fried Parameter and Seeing - 3D Summit Dome Walk-Through

Walk or fly around an island-volcano summit observatory above a sea of clouds: Blender dome with opening shutters and alt-az telescope, night sky with extinction-dimmed twinkling stars, live seeing numbers and a speckle point-spread function, guided tour and numerical checks.