Senin, 24 Mei 2021

Your Last-Minute Lunar Eclipse Toolkit: How And When To See, Stream And Photograph Wednesday’s Rare Lunar Trifecta - Forbes

Are you ready for an early morning eclipse of the Moon? Though it’s not visible in Europe, North America and the Pacific Rim will enjoy a total eclipse of the Moon—a “Blood Moon” that turns red for 15 minutes—in the early morning hours of Wednesday, May 26, 2021.

Here’s exactly when you can see this week’s “Super Flower Blood Moon Eclipse” from every U.S. state, where to stream it online, how to photograph it, and everything else you need to know: 

How to stream the ‘Blood Moon’

There are two great streaming sources for this event—Lowell Observatory in Flagstaff, Arizona and TimeAndDate.com. Here they are:

What is a ‘Blood Moon?’ 

It’s a total lunar eclipse—when the Earth gets precisely between the Sun and the Moon to prevent light from fling upon the Moon. In fact, the only light that will get through is first filtered by Earth’s atmosphere.

In effect all of Earth’s sunrises and sunsets are projected onto the lunar surface at once. There’s not been a total lunar eclipse since January 21, 2019. 

“You only need your eyes to see the drama unfold, but if you have binoculars or a backyard telescope, they'll give a much-enhanced view,” said Diana Hannikainen, observing editor at Sky & Telescope.

It’s part of an eclipse season that also includes a solar eclipse on June 10, 2021 that’s also visible in North America.

Here are seven other things you didn’t know about the “Super Flower Blood Moon” and the incredible science that can be learned during totality.

What is a ‘supermoon?’ 

This week’s full “Flower Moon” is the closest of the year. 

A “supermoon”—technically called a perigean full Moon—is when the Moon turns full while also at its closest point (perigee) to Earth in its monthly elliptical orbit.

But out of all the 12 lunar perigees in 2021, this week’s is the closest. 

How does a ‘supermoon’ combine with a ‘Blood Moon?’

It means the Moon will appear bigger, look brighter, and move more quickly. A “supermoon” also spends less time in Earth’s shadow than a smaller-looking Moon.

Consequently, this particular total lunar eclipse’s total phase will last for just 15 minutes (instead of hours) because the Moon only enters the tip bit of Earth’s shadow.

So no sooner has it entered the shadow, but it leaves again. 

So you need to get your timings spot-on!

What time is the ‘Blood supermoon?’

Here’s exactly when to see it from every U.S. state

Yes, you’re going to have to get ready for an early start on Wednesday, May 26, 2021.

The total phase of lunar eclipse begins at 6:11 am CDT, 5:11 am MDT, 4:11 am PDT, which are the timezones where the “red moon” totality can be seen. It will last for 15 minutes. 

Where is the ‘Blood Moon?’ 

Those on the night-side of Earth entered on the Pacific Rim will get the best view of the entire event from start to finish.

Depending on your location most everyone in North America will see at least a partial lunar eclipse.

But it all depends on where you in relation to the Mississippi. Those west of the Mississippi will see totality while those east of the Mississippi will not.

But there are a few second-prizes ...

Where is the ‘Half-Blood Moon?’ 

Because it’s happening around moonset, those on the east coast will miss totality, but will still see some of the full Moon have a chunk taken out of it by Earth’s mighty shadow in space—a “Half-Blood Moon.”

That’s a terrific sight. And so is the rising of a full “supermoon,” which will be best viewed at dusk on Wednesday evening.

Those under dark skies may briefly see the Milky Way behind the “Blood Moon” on Wednesday morning, while a recent outburst by the Sun means those in northern areas of Washington, Idaho and Montana possibly may also see a glimmer of ... the Northern Lights! 

How to photograph the ‘Blood Moon’ 

There are some excellent tutorials on how to photograph the total lunar eclipse using a smartphone and a “proper” camera—see here, here and here—but the basics are:

How to take a ‘Blood moon’ close-up

  • use a mirrorless or DSR camera with a 500-600mm telephoto lens (though 300mm will just about do).
  • focus on infinity.
  • begin at ISO 100, f/8 aperture and 1/125-1/250 sec shutter speed, but as totality begins and the Moon goes red try ISO 800 and f4-f8. Also experiment with shutter speed, but go no slower than 1/2 sec.

How to photograph the ‘Blood moon’ with a smartphone

  • get something interesting in the foreground—like a tree, building or mountain (but avoid anything brightly-lit).
  • put your smartphone on a tripod because a long exposure will be needed.
  • lock your exposure on the Moon by pressing it on the screen, then take the photo. It will take a few seconds, possibly about 25 seconds if you’re in a dark place (the darker, the better!).
  • experiment with manual settings if your phone lets you do that/if you have a third-party app.

What will the ‘Blood Moon’ look like from the Moon? 

From the surface of the Moon, the Earth will totally eclipse the Sun.

Anyone on the Moon would see a red ring around the Earth’s atmosphere, everything around them would look red, and it would get very cold. 

It’s possibly something that NASA astronauts might experience in 2025.

When is the next ‘Blood Moon’ total lunar eclipse?

“If you miss this eclipse, don’t despair — the night of November 18-19, 2021 presents another lunar eclipse,” said Hannikainen. 

“Technically, the November event will be partial, but only the thinnest sliver of the Moon’s disk will remain outside the umbra, so for all intents and purposes it’ll be very much like a total eclipse.”

Wishing you clear skies and wide eyes.

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2021-05-25 02:00:00Z
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