For an urban astronomer, what type of overlooked expense must be factored into the real-world cost of observing sessions?

Answer

The 'Dark Sky Tax'

The Dark Sky Tax encompasses the fuel, time, and vehicle wear associated with driving long distances away from light pollution in urban or suburban areas just to find adequate viewing conditions.

For an urban astronomer, what type of overlooked expense must be factored into the real-world cost of observing sessions?

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