Oct. 14, 2012
Collection time: 1530-1600 UTC
Location: Just behind MSF, holding slides vertically to capture blowing diamond dust.
Description: simple prisms: plates, columns. Some needles.
Surface weather: -28 C, 81% RH, S winds 16 knots
Comments: moderate to heavy diamond dust conditions. Good solar halos and associated optics. Conditions persisted most of late morning and afternoon. Heaviest approximately 1500-1600 UTC.