ARCHIVE - Forecast relative to the night starting on 2024/11/21 MST
Note: click on a figure to magnify the image.
Date of figures refers to the start of night in MST.

WAVEFRONT COHERENCE TIME (τ0) MAPS TEMPORAL EVOLUTION

Wavefront coherence time horizontal map extended on a 50km x 50km square surface centred on LBT (represented with a black dot). The Wavefront coherence time is integrated over three different vertical slabs:
    TOTAL WAVEFRONT COHERENCE TIME (τ0,TOT) - [dome-20000]m
    BOUNDARY LAYER WAVEFRONT COHERENCE TIME (τ0,BL) - [dome-600]m
    FREE ATMOSPHERE WAVEFRONT COHERENCE TIME (τ0,FA) - [600-20000]m
The wavefront coherence time in each pixel is obtained integrating the CN2 and wind speed along the zenith and covering the temporal range [dusk,dawn]. The animations show the temporal evolution with 1-hour steps (in UT and MST). The black iso-lines represent the heights of the Digital Elevation Model (DEM).

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Fig. 1: τ0 map [50x50]km integrated on [20-20000]m
Time animation with 1-hour steps

Fig. 2: τ0 map [50x50]km integrated on [20-600]m
Time animation with 1-hour steps

Fig. 3: τ0 map [50x50]km integrated on [600-20000]m
Time animation with 1-hour steps