Tau.Neutrino said:

Tau.Neutrino said:

Tau.Neutrino said:

Maybe an additional improvement might be to add satellite positions, those which might interfere with observation time.

Things that interfere with telescope Observation Time.

Moonlight
Atmospheric conditions
Cloud cover
Street lights
Satellites
Space junk
Sun storms
Nearby supernovas

Aurora’s
Changing twilight times
Zodiacal light?

Passing planets