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Posts by Bart B

20 April Crescent Moon.
The Sea of Crises is nicely centered tonight.
Olympus camera. Telephoto lens.

20 April Crescent Moon. The Sea of Crises is nicely centered tonight. Olympus camera. Telephoto lens.

20 April Crescent Moon. 🌒
The Sea of Crises is nicely centered tonight.
Olympus OM-D EM-5 Mark III. 600 mm telephoto lens.

18 hours ago 0 0 0 0
On the Trail: the greening of spring continues in Chicago’s western suburbs.

On the Trail: the greening of spring continues in Chicago’s western suburbs.

On the Trail: the greening of spring continues in Chicago’s western suburbs.

19 hours ago 0 0 0 0
Along the trail in northern Illinois, the Eastern Redbud (Cercis canadensis) is starting to bloom in violet/pink hues.

Along the trail in northern Illinois, the Eastern Redbud (Cercis canadensis) is starting to bloom in violet/pink hues.

Along the trail in northern Illinois, the Eastern Redbud (Cercis canadensis) is starting to bloom in violet/pink hues.

3 days ago 0 0 0 0
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The night of April 14-15 is a sad and consequential night in history.

1865 - Assassination of Abraham Lincoln
1912 - Sinking of the RMS Titanic

Both tragic events began on the 14th and ended on the 15th.

6 days ago 0 0 0 0
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Attention all spaceflight enthusiasts! Here are two great sources for higher resolution versions of Artemis II images:

★ www.nasa.gov/artemis-ii-m...
★ www.flickr.com/photos/nasa2...

1 week ago 0 0 0 0
Wow! It was GREAT to see the complete success of Artemis II.  🚀
It feels like a whole new Apollo era has truly begun!  🌖
. . . and something GOOD has happened in the world! 🌎

Wow! It was GREAT to see the complete success of Artemis II. 🚀 It feels like a whole new Apollo era has truly begun! 🌖 . . . and something GOOD has happened in the world! 🌎

Wow! It was GREAT to see the complete success of Artemis II. 🚀
It feels like a whole new Apollo era has truly begun! 🌖
. . . and something GOOD has happened in the world! 🌎

1 week ago 0 0 0 0
On the two-year anniversary of the Great American Eclipse, NASA releases this stunning Total Solar Eclipse image from Artemis II. Saturn, Mars, and Mercury shine near the Moon’s ghostly orb. Credit: NASA

On the two-year anniversary of the Great American Eclipse, NASA releases this stunning Total Solar Eclipse image from Artemis II. Saturn, Mars, and Mercury shine near the Moon’s ghostly orb. Credit: NASA

On the two-year anniversary of the Great American Eclipse, NASA releases this stunning Total Solar Eclipse image from Artemis II. Saturn, Mars, and Mercury shine near the Moon’s ghostly orb.
Credit: NASA

1 week ago 15 3 1 1
Wow! Did you see this nice Milky Way photo from the Artemis II astronauts? P.S. That's the Large Magellanic Cloud in the right corner.
Credit: NASA

Wow! Did you see this nice Milky Way photo from the Artemis II astronauts? P.S. That's the Large Magellanic Cloud in the right corner. Credit: NASA

Wow! Did you see this nice Milky Way photo from the Artemis II astronauts?
P.S. That's the Large Magellanic Cloud in the right corner.
Credit: NASA

1 week ago 2 1 0 0
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Tonight's 3-day old crescent Moon, exposed for the Moon's sunlit portion.

Tonight's 3-day old crescent Moon, exposed for the Moon's sunlit portion.

Tonight's 3-day old crescent Moon, exposed for the Moon's sunlit portion.

4 weeks ago 1 0 0 0
Tonight's waxing crescent Moon, with prominent Earthshine. Olympus camera, telephoto lens, tripod. From west suburban Chicago.

Tonight's waxing crescent Moon, with prominent Earthshine. Olympus camera, telephoto lens, tripod. From west suburban Chicago.

Tonight's waxing crescent Moon, with prominent Earthshine. Olympus camera, telephoto lens, tripod. Taken from west suburban Chicago.

4 weeks ago 0 0 0 0
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A jet flying almost directly overhead joined the already crowded skies in Gemini tonight, including the Moon, Jupiter, and the stars Castor and Pollux. These two frames were taken 28 seconds apart.

1 month ago 0 0 0 0
The Gemini gathering: Castor, Pollux, Moon, Jupiter. Taken with Olympus camera and 53 mm lens.

The Gemini gathering: Castor, Pollux, Moon, Jupiter. Taken with Olympus camera and 53 mm lens.

The Gemini gathering: Castor, Pollux, Moon, Jupiter. Taken with Olympus camera and 53 mm lens. #astronomy

1 month ago 4 0 1 0
Celestial traffic jam in Gemini tonight . . . high overhead! Tonight, the 86% lit Moon is positioned beside Castor and Pollux, the two brightest stars of Gemini. The Moon essentially becomes a third (and very bright) brother. And bright Jupiter stands nearby.

Celestial traffic jam in Gemini tonight . . . high overhead! Tonight, the 86% lit Moon is positioned beside Castor and Pollux, the two brightest stars of Gemini. The Moon essentially becomes a third (and very bright) brother. And bright Jupiter stands nearby.

Celestial traffic jam in Gemini tonight . . . high overhead! Tonight, the 86% lit Moon is positioned beside Castor and Pollux, the two brightest stars of Gemini. The Moon essentially becomes a third (and very bright) brother. 😁 And bright Jupiter stands nearby.
#astronomy

1 month ago 17 8 0 0

This post revealed to me that Bluesky significantly mangles the fine resolution of posted photos. My original shows two Jovian moons plainly; not at all here! Interestingly, Facebook mangles the least 👍; Instagram and Threads mangle the most. 👎

1 month ago 0 0 0 0
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Moon and Pleiades — 2026 Feb 23 - AstroBin The Moon’s close conjunction to the Pleiades.February 23, 20268:01 p.m. CSTOlympus OM-D E-M5 Mark IIIOlympus M.Zuiko 75–300 mm lens operating at 270 mm1/3 sec exposuref/6.7ISO 6400Manfrotto 410 Junior...

Test of AstroBin account link
app.astrobin.com/i/4fpa69

1 month ago 0 0 0 0
Tonight's Great Rectangle overhead . . . with corners marked by the Moon, Jupiter, Castor and Pollux (stars in Gemini). Two of Jupiter's moons can be seen by zooming in on the lower right "star." Olympus camera; zoom lens set at 53 mm.

Tonight's Great Rectangle overhead . . . with corners marked by the Moon, Jupiter, Castor and Pollux (stars in Gemini). Two of Jupiter's moons can be seen by zooming in on the lower right "star." Olympus camera; zoom lens set at 53 mm.

Tonight's Great Rectangle overhead . . . with corners marked by the Moon, Jupiter, Castor and Pollux (stars in Gemini). Two of Jupiter's moons can be seen by zooming in on the lower right "star." Olympus camera; zoom lens set at 53 mm.

1 month ago 1 0 1 0
The Moon visits the Pleiades
February 23. 8:01 p.m. CST
Olympus camera. 270mm f.l.

The Moon visits the Pleiades February 23. 8:01 p.m. CST Olympus camera. 270mm f.l.

The Moon visits the Pleiades
February 23. 8:01 p.m. CST
Olympus camera. 270mm f.l.

1 month ago 0 0 0 0
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Happy Birthday, George Washington! 🎂
In 6 years, we’ll celebrate the tricentennial of your birth!

1 month ago 0 0 0 0

I enjoy explaining across my interests:

🪐 Astronomy — what’s in the sky
🇺🇸 Civil War — citizen soldiers & history
🪙 Coins & stamps — history in objects
🚴🏻‍♂️ Cycling — trails & observations

• Retired planetarium director
• Astrophotographer

Accurate, calm explanations across topics.

2 months ago 1 0 0 0
Remembering Abraham Lincoln on his birthday, which was in 1809 (217 years ago).

Remembering Abraham Lincoln on his birthday, which was in 1809 (217 years ago).

Remembering Abraham Lincoln on his birthday, which was in 1809 (217 years ago).
#AbrahamLincoln #CivilWarHistory #americanhistory

2 months ago 0 0 0 0
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12 Days of Lincoln
Day 12 — Second Inaugural

Lincoln’s Second Inaugural Address may be his greatest speech. Delivered in March 1865 as the Civil War neared its end, its famous line

“With malice toward none; with charity for all”

emphasized reconciliation over triumph.

#CivilWarHistory

2 months ago 0 0 0 0
12 Days of Lincoln
Day 11 — The Lincoln Cent

In 1909, on the centennial of Lincoln’s birth, the U.S. replaced the Indian Head Cent with the Lincoln Cent — the first circulating coin to feature a real person. 117 years later, its obverse design hasn’t changed.

12 Days of Lincoln Day 11 — The Lincoln Cent In 1909, on the centennial of Lincoln’s birth, the U.S. replaced the Indian Head Cent with the Lincoln Cent — the first circulating coin to feature a real person. 117 years later, its obverse design hasn’t changed.

12 Days of Lincoln
Day 11 — The Lincoln Cent

In 1909, on the centennial of Lincoln’s birth, the U.S. replaced the Indian Head Cent with the Lincoln Cent — the first circulating coin to feature a real person. 117 years later, its obverse design hasn’t changed.

#CivilWarHistory

2 months ago 1 0 0 0
Today I enjoyed my first bike ride in 4 weeks! It reached a balmy 45 degrees, with traces of snow still clinging to the less traveled streets.

Today I enjoyed my first bike ride in 4 weeks! It reached a balmy 45 degrees, with traces of snow still clinging to the less traveled streets.

Today I enjoyed my first bike ride in 4 weeks! It reached a balmy 45 degrees, with traces of snow still clinging to the less traveled streets.

2 months ago 1 0 0 0
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12 Days of Lincoln
Day 10 — Places Named Lincoln

Only one town named “Lincoln” existed during his lifetime — Lincoln, Illinois. In the 1850s, Abraham Lincoln helped design the town, practiced law there, and helped shape its future.

All others were named for him after his death.

#CivilWarHistory

2 months ago 0 0 0 0
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12 Days of Lincoln
Day 9 — Lincoln’s Height

In the 1850s, the average American man stood about 5’ 7”.

At 6’ 4”, Lincoln physically towered over his contemporaries — including Stephen Douglas, who stood a full foot shorter. The contrast became part of his legend.

#CivilWarHistory

2 months ago 0 0 0 0
12 Days of Lincoln
Day 8 — Lincoln’s Beard

In 1860, an 11-year-old girl wrote Lincoln suggesting he grow a beard to soften his appearance. After the election, he did just that! When his train passed through Grace’s town in 1861, he met her and credited her suggestion.

12 Days of Lincoln Day 8 — Lincoln’s Beard In 1860, an 11-year-old girl wrote Lincoln suggesting he grow a beard to soften his appearance. After the election, he did just that! When his train passed through Grace’s town in 1861, he met her and credited her suggestion.

12 Days of Lincoln
Day 8 — Lincoln’s Beard

In 1860, an 11-year-old girl wrote Lincoln suggesting he grow a beard to soften his appearance. After the election, he did just that! When his train passed through Grace’s town in 1861, he met her and credited her suggestion.

#CivilWarHistory

2 months ago 0 0 0 0
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12 Days of Lincoln
Day 7 — Lincoln’s Speaking Voice (Part 2)

We’ll never hear Lincoln’s real voice, but using historical descriptions, I conducted a thought experiment using ElevenLabs speech synthesis technology. The result was far less strange than expected:

bit.ly/3OeEtFt

#CivilWarHistory

2 months ago 0 0 0 0
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12 Days of Lincoln
Day 6 — Lincoln’s Speaking Voice (Part 1)

Lincoln’s voice was high-pitched and reedy — not the booming baritone we imagine. But it carried across crowds and proved remarkably effective once listeners adjusted.

Tomorrow: a voice reconstruction experiment.

12 Days of Lincoln Day 6 — Lincoln’s Speaking Voice (Part 1) Lincoln’s voice was high-pitched and reedy — not the booming baritone we imagine. But it carried across crowds and proved remarkably effective once listeners adjusted. Tomorrow: a voice reconstruction experiment.

12 Days of Lincoln
Day 6 — Lincoln’s Speaking Voice (Part 1)

Lincoln’s voice was high-pitched and reedy — not the booming baritone we imagine. But it carried across crowds and proved remarkably effective once listeners adjusted.

Tomorrow: a voice reconstruction experiment.

#CivilWarHistory

2 months ago 0 0 0 0
12 Days of Lincoln
Day 5 — Lincoln at Gettysburg

Following Edward Everett's two hour speech, Lincoln's short address argued that the Civil War was a test of whether a nation founded on equality and self-government could survive. Lincoln’s 272 words redefined American democracy.

12 Days of Lincoln Day 5 — Lincoln at Gettysburg Following Edward Everett's two hour speech, Lincoln's short address argued that the Civil War was a test of whether a nation founded on equality and self-government could survive. Lincoln’s 272 words redefined American democracy.

12 Days of Lincoln
Day 5 — Lincoln at Gettysburg

Following Edward Everett's two hour speech, Lincoln's short address argued that the Civil War was a test of whether a nation founded on equality and self-government could survive. Lincoln’s 272 words redefined American democracy.

#CivilWarHistory

2 months ago 0 0 0 0
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12 Days of Lincoln
Day 4 — Cooper Union: Lincoln the Logician

Lincoln’s 1860 Cooper Union speech made his presidency possible. By calmly proving that the Founders supported restricting slavery, he made his conclusion inescapable — and transformed himself into a national figure.

#CivilWarHistory

2 months ago 1 0 0 0