ProfiLux 4 Programming Guide
EN 2017-02-06 24
3.5 Clouds
ProfiLux 4 can simulate passing clouds by using a random generator. When a cloud passes, all
of the involved luminaires temporarily become darker as the simulation goes through its
effect.
The maximal waiting time (0s - 100s) determines how long the time intervals between two
clouds should be (with 0s the cloud simulation is switched off). The random number
generator waits between 1s and the maximal waiting time until a new cloud is generated.
Furthermore, the minimal and maximal cloud duration as well as the maximal darkening (10% -
95%) are to be set. The random generator generates new clouds, taking these values into
account.
The cloud simulation also works with simultaneous lunar phase simulations and during a
dimming process.
Note that the cloud simulation must be active for the desired illumination channels, see also
-> Illumination run.
3.6 Moon
ProfiLux 4 simulates the moon phases depending on the date.
In reality, the lunar cycle is a very complex matter:
Thus the distances vary from new moon to new moon. On average it is about 29.5
days.
Likewise, the moonrise time as well as the distance to the earth differ respectively.
It is not the fact that at half-moon the moon has 50% of its brightness. We consider on
average about 25%.
Our lunar phase simulation does not aim to replicate these complex sequences in every
detail. For us, it was important to produce a repeating moonlight sequence which would
illuminate the aquarium somewhat differently day-to-day. We’ve implemented such features
to provide a certain rhythm which would largely be in harmony with nature.
Lunar phases created by the ProfiLux 4 are based on the calendar date so that full moon and
new moon phases always correspond to the actual (real) lunar phase with a deviation of one
day or less.
You can set the time when the lunar phase simulation is active. In order for the lunar phase
simulation to function, it must first be activated in the desired lighting channels.