Isoplanatic angle horizontal map extended on a 50km x 50km square surface centred on LBT (represented with a black dot). The isoplanatic angle in integrated in [dome-20000]m vertical slab.
The isoplanatic angle in each pixel is obtained integrating the C_N² along the zenith and covering the temporal range [dusk,dawn].
On the top left, an animation with a temporal evolution with 1-hour steps in the [dusk,dawn] time frame is shown.
On the top right, an average over the [dusk-dawn] time frame is shown.
On the bottom, isplanatic angle averages are computed over the first, central and last part of the night (see partition).
The black iso-lines represent the heights of the Digital Elevation Model (DEM).

Fig. 2: θ₀ map averaged on [20-20000]m vertical slab
over the whole night time frame

Temporal evolution of the isoplanatic angle integrated in [dome-20000]m between the sunset and the sunrise:

TOTAL ISOPLANATIC ANGLE (θ_0,TOT) – [dome-20000]m

Astronomical dusk and dawn are shown too.
On the x-axis is time in UT (bottom), in MST (top). Mountain Standard Time MST=UT-7. Data points frequency is 2 minutes. Data points are re-sampled at a frequency of 20 minutes after a 1-hour moving average. The error bars are the sigma over the 20 minutes sampling, computed before the moving average.