  We suggest the procedure of building the maps of noctilucent clouds (NLC)
zonal and meridional velocity, mean altitude and particle size based on
three-color photometry by identical all-sky RGB-cameras separated by 115 km in
a close-meridional direction. The procedure is applied to the bright NLC event
on July 3, 2023. The altitude is measured by precise triangulation technique,
and effective particle radius is estimated by comparison of each definite NLC
fragment intensity and colors at different scattering angles as it is
registered from different observation sites. The results are compared with
existing photometric methods for average altitude and particle size
measurements. A significant difference in evening and morning twilight NLC
parameters is found, which is discussed in comparison with existing analysis of
diurnal NLC variations.
