** Weekly X Series Photo Thread 12 JUl - 18 JUL**

Started 3 months ago | Discussions thread
Truman Prevatt
Truman Prevatt Forum Pro • Posts: 11,191
Re: Comet Neowise

TrophyJem wrote:

Very much third time lucky this one, as two very early starts where clouded out. But managed to get the shot this morning.

I never really appreciated how much the earth spins until trying to take this.

At the equator - over 1670 km/hour.  Less by about a factor of cos(lat_degree) as you got North or South of the equator. You seldom notice it until you try to track something in space.

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Truman
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