clear, 40F, 15-20% RH rising, 6-8mph or 2-4 m/s from 220 degr.
Many ‘hung shutter’ frames but the ones that work are perfect.
A blog about a telescopic system at the Mauna Loa Observatory on Hawaii to determine terrestrial albedo by earthshine observations. Feasible thanks to sheer determination.
clear, 40F, 15-20% RH rising, 6-8mph or 2-4 m/s from 220 degr.
Many ‘hung shutter’ frames but the ones that work are perfect.