A Near-Miss Total Lunar Eclipse

May 2021 lunar eclipse
The partially eclipsed Moon units behind a dawn-tinged North Sister peak within the Three Sisters Mountains in Oregon throughout the May 26, 2021, lunar eclipse. Details: Canon SL1, 75-300 mm lens, 1/10 second at f/8, ISO 400.
Alan Gillespie

The deep partial lunar eclipse on the evening of November 18–19 needs to be spectacular. With 97% of the total Beaver Moon in Earth’s shadow at mid-eclipse, we’ll witness practically all the great things related to a complete eclipse, together with the Moon’s radical shade change from bone white to tangerine. The solely factor we can’t see is totality. At most eclipse, a silvery 0.7 arcminutes of the Moon’s southern limb will prolong past the umbra. Lucky for us, full Moon happens 1.7 days earlier than apogee, shrinking the Moon’s obvious dimension so extra of it squeezes contained in the umbra than regular.

Lunar eclipse layout
Lunar eclipses happen at full Moon, when the Moon passes straight behind the Earth into its shadow. If the Earth have been airless, the Moon would look utterly black throughout a complete lunar eclipse. But the environment refracts reddened daylight grazing the sting of the planet into the Earth’s umbra, coloring the lunar disk throughout totality. (Not proven to scale.)
Starry Night with additions by Bob King

As is true with all lunar eclipses, half the planet can see a number of points of the occasion — wherever the Moon is above the horizon. This consists of the Americas, northern Europe, jap Asia, Australia, and the Pacific. Virtually all the present shall be seen throughout North America. Click here for a protection map. Two weeks and a half-orbit afterward December 4th, the Moon will completely eclipse the Sun from the Southern Ocean and Antarctica.

Impact flash!
Amateur astronomer Christian Fröschlin of the Netherlands captured the flash of a meteoroid affect throughout the January 20, 2019, complete lunar eclipse.
Christian Fröschlin

Coincidentally, the eclipse occurs very near the utmost of the Leonid meteor shower which peaks on November 17–18, elevating the potential for seeing or recording a Leonid meteor affect on the darkened Moon. While it is an off-year for the bathe with a most of solely about 15 meteors per hour, be alert to the chance. If you’ve a second telescope to shoot video for a half-hour or so round mid-eclipse, it might be value a shot (see, e.g., the Pro-Am Conjunction column within the November issue of Sky & Telescope). Several observers recorded a split-second meteor affect flash throughout the complete eclipse of January 20, 2019.

Eclipse phases by time zone

November 18–19, 2021 AST EST CST MST PST AKST HST
Penumbra first seen? 2:45 a.m. 1:45 a.m. 12:45 a.m. 11:45 p.m. 10:45 p.m. 9:45
8:45 p.m.
Partial eclipse begins 3:18
2:18 a.m. 1:18 a.m. 12:18 a.m. 11:18 p.m. 10:18 p.m. 9:18
Mid-eclipse 5:03 a.m. 4:03 a.m. 3:03 a.m. 2:03 a.m. 1:03 a.m. 12:03 a.m. 11:03 p.m.
Partial eclipse ends 6:47 a.m. 5:47 a.m. 4:47 a.m. 3:47 a.m. 2:47 a.m. 1:47 a.m. 12:47 a.m.
Penumbra final seen? —– 6:35 a.m. 5:35 a.m. 4:35 a.m. 3:35 a.m. 2:35 a.m. 1:35 a.m.

November is commonly cloudy and chilly. For massive occasions like eclipses I preserve observe of the climate utilizing GOES-East satellite imagery, which gives wonderful protection of the jap two-thirds of the U.S., southern Canada, and Central America. There’s additionally a GOES-West version.

When you click on both hyperlink above it defaults to a visible-wavelength picture. For evening use you will want infrared imagery to see and observe clouds. Click the Choose bar drop-down menu and choose Channel 7. Clicking wherever on the map will pop up an enlarged view of that area. When you back-arrow to wide-view mode, controls allow you to improve picture dimension or create an animated loop to discern traits in cloud motion.

Eclipse picture information

ISO 800 f/2.8 f/4 f/5.6 f/8
No eclipse —— —— —— 1/4000
Penumbral eclipse —— —— 1/4000 1/2000
Partial eclipse (30% lined) —— 1/4000 1/2000 1/1000
Partial eclipse (60% lined) 1/4000 1/2000 1/1000 1/500
Partial eclipse (90% lined) 1/1000 1/500 1/250 1/125
Total eclipse (vibrant) 1/15 1/8 1/4 1/2
Total eclipse (darkish) 1 sec. 2 sec. 4 sec. 8 sec.
Total eclipse (very darkish) 4 sec. 8 sec. 15 sec. 30 sec.
This publicity information is ready for ISO 800, a speed appropriate for all points of a lunar eclipse. The occasions will yield well-exposed photographs of the intense or totally eclipsed Moon, with the darkened portion faintly seen. Increasing occasions will document extra shadow shade however overexpose the intense half. Use a tripod for longer exposures.
Bob King

The Weather Network additionally presents a useful, interactive cloud viewer or you possibly can verify the U.S. 7-Day Cloud Cover Forecast. If you possibly can’t escape dangerous climate, Gianluca Masi will dwell stream the present on his Virtual Telescope site on November nineteenth beginning at 7:00 UT (2 a.m. EST).

Pleiades and eclipsed moon
The eclipsed Moon and Pleiades cluster will pair up throughout the eclipse. This map reveals them at mid-eclipse (3:03 a.m. CST) when the gap from the southern lunar limb to the cluster’s northern border shall be about 6.8°.
Bob King

November’s near-totally eclipsed Moon will accompany the Pleiades, one of many brightest and prettiest star clusters within the heavens. At mid-eclipse, simply 6.5° separate the 2, making for a wonderful image alternative. Try photographing the scene when the sky is darkest round mid-eclipse. Almost any lens will do relying on what, if any, foreground you embrace. I like to recommend a 100- to 200-mm telephoto to seize a bit extra element. With a full-frame sensor, a 100-mm lens has a discipline of view of 20.4° × 13.7°; a 200-mm lens, 10.3° × 6.9°.

Lunar Eclipse November 2021 CST
November’s lunar eclipse shall be very near complete. Observers throughout North America ought to have wonderful views of the dimming Moon because it crosses Earth’s two-part shadow. At mid-eclipse, solely the Moon’s “little toe” will poke out from the umbra. Times are CST.
Gregg Dinderman, Sky & Telescope

Slipping into shadowland

I plan to share the eclipse with a good friend. We’ll be observing with every part we have got: bare eyeballs, binoculars, and telescopes. Each presents a singular perspective, and a lunar eclipse is lengthy sufficient to make use of all of them. The bare eye works greatest in experiencing the transformation of the evening from harsh moonlight and star-poor skies to darkish quietude beneath the duvet of umbral darkness. This has all the time been considered one of my favourite points of lunar eclipses. Without daylight the Moon appears small and fewer substantial, as if robbed of its superpowers.

Umbra at Moon's distance
Earth’s umbra on the Moon’s distance spans about 9,000 kilometers or 2.6°. Given the Moon’s orbital tilt of 5.1° it is easy to see why eclipses do not occur each full Moon — crossing the shadow is like hitting a bull’s-eye.
Bob King

Binoculars improve and intensify the Moon’s shade transformation and add a 3rd dimension, giving the ruddy globe the looks of being suspended among the many stars. A telescope clearly reveals the shadow’s blurry edge, softened by Earth’s environment, in addition to different extra delicate colours like smoky yellows, shades of tea, and even pale blue (attributable to absorption of red mild by the ozone layer). It’s additionally nice enjoyable to observe the foremost craters succumb in succession to the encroaching shadow. Imagine the scene from the Moon, standing atop Tycho’s central peak watching the Earth slowly cowl the Sun. Wow!

Comet Leonard during lunar eclipse
Make a facet journey to Comet Leonard when the sky is darkest. The comet lies in Coma Berenices simply over the border from Canes Venatici. Stars are plotted to magnitude 10 and north is up.

Consider a facet journey to Comet Leonard at mid-eclipse for a particular shock. That morning, the comet will seem about 20′ south-southwest of the Tenth-magnitude galaxy NGC 4395 and can glow round magnitude 9. You may even glimpse it in 50-mm binoculars. But not for lengthy! The Moon has locations to go and shortly sufficient departs the valley of shadow to flood the sky with mild once more.

The gradual rhythm of a lunar eclipse gives a possibility to cease, catch our breath, and fall consistent with the three most vital cosmic our bodies in our life.

To learn extra on the lunar eclipse and different enjoyable celestial occasions this month get the November issue.


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