Moon and its effect on Milky Way?

Started 2 months ago | Discussions thread
vegetaleb
OP vegetaleb Senior Member • Posts: 1,317
Re: Moon and its effect on Milky Way?

Bill Ferris wrote:

A pristine night sky with no Moon has a surface brightness of about 22.0 magnitudes per square arcsecond. A full Moon in those same conditions increases the sky's surface brightness to roughly 18.0 magnitudes per square arcsecond. That's 4 magnitudes or 40x brighter.

So I guess the other night it was about 19, it was a 70% lighted moon raising above horizon.

What about a half moon that will rise 3 hours after taking the photos?

Would they be affected like 20-21 magnitudes per square arcseconds? I mean if the moon is still not above the horizon can it still distantly impact the darkness of the sky?

Following table means no moon at all on the 24th (tomorrow)?

https://www.timeanddate.com/moon/lebanon/beirut

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