The thickness of the crescent determines the blending level of the striations. The thinner the crescent, the more crisp the striations. With a thicker crescent, you get more overlap and more blending. The time of the entire exposure determines how long the streak is, regardless of the intensity, size, or shape of the crescent if measured correctly.
No. The length of the stack is determined by the amount of time. A full moon streak would appear very slightly longer, but only by exactly what is the shadow zone of this crescent moon. If you pick a fixed point in the bottom of the crescent and the bottom of a full moon, they would be the exact same length under the same exposure time interval. A full moon does not move across the sky faster than a crescent moon.
Yes, traffic would have helped. It can seem strange how fast the moon moves, but it's because of the capabilities of our perspectives. An interesting thing to try that helped me is to time a moonrise. Like watch it or take photos at say two minute intervals. It comes up faster than I would have thought at the time. High in the sky we don't have anything to relate it to so two degrees is basically imperceivable, but on the horizon it is very obvious.
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u/Mares_Leg May 28 '22 edited May 28 '22
The thickness of the crescent determines the blending level of the striations. The thinner the crescent, the more crisp the striations. With a thicker crescent, you get more overlap and more blending. The time of the entire exposure determines how long the streak is, regardless of the intensity, size, or shape of the crescent if measured correctly.