Visibility of astronomical objects during darkness
Fill in this form and press submit to obtain a plot with times
where the given object is visible during darkness above certain
angles above horizontal.
In the resulting plot white corresponds to times where the sun is up,
three grey levels correspond to civil, naval, and astronomical twilight,
and yellow corresponds to times where the moon is up or making twilight.
The times when the object is visible is indicated by up to four levels of blue.
To use less levels, set the remaining levels to zero.
This service is provided at the
Max-Planck-Institut für Kernphysik,
Konrad. Bernloehr at mpi-hd. mpg. de