@pleiotrope@fosstodon.org
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pleiotrope

@pleiotrope@fosstodon.org

Data scientist working in healthcare and occasional F/OSS developer. Hobbies include large-format landscape photography, astrophotography, hiking, reading, and losing tug of war to my dog. He/him 🏳️‍🌈

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pleiotrope, to Astronomy
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The Milky Way towering above ancient Lake Manly on the cusp of nautical twilight.

pleiotrope, to lightroom
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Walking my dog last night and thought the full moon looked a little lopsided. Turns out it was grazing the edge of the Earth’s shadow- I’d completely forgotten about the penumbral lunar eclipse!

(Also a shout-out to the app’s camera- this was first time I’ve ever been able to get a properly exposed picture of the moon from my iPhone)

pleiotrope,
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@amoroso thank you!

And that’s a great tip (and great photos!) It makes sense- minimizing the difference in brightness between the sky and moon would let autoexposure choose a better starting point.

pleiotrope, to astrophotography
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Getting a head start on galaxy season this year with one of my favorites: Messier 104, the Sombrero Galaxy.

A “peculiar galaxy of unclear classification” (Wikipedia), ~31 million light years away.

pleiotrope, to Astro
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Melotte 15, an open cluster at the heart of the Heart Nebula. This is a composite image showing hydrogen-alpha and oxygen-III emissions from the nebula, plus stars as they appear in the visual spectrum.

pleiotrope,
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@stfn yeah, essentially! The stars are RGB while the nebula and background are Ha and OIII

pleiotrope, to astrophotography
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The Pleiades star cluster, aka M45. One of the most beautiful objects in the night sky (in my opinion), this is also the closest open cluster to Earth. The brightest stars are visible even under light polluted skies forming a tiny “little dipper” asterism, but the blue reflection nebula around them is most easily seen in photographs.

pleiotrope, (edited ) to Astro
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The Bubble Nebula, NGC 7635. The central bubble is caused by gases blown away from a hot central star colliding with the interstellar nebula surrounding it.

This is one of my favorite targets in the night sky, but surprisingly dim (especially the SII signal). This image took over 30 hours of integration time from my heavily light-polluted balcony.

pleiotrope, to Astro
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Some picules, the tendrils rising above the surface of the solar chromosphere, visible through an H-alpha filter.

pleiotrope, to Astro
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Some charismatic solar plage visible in H-alpha.

pleiotrope, to Astro
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M17, the Omega Nebula, in the constellation Sagittarius. Captured on a hot, windy night high in the mountains, so tracking wasn’t great.

Sulfur and hydrogen mapped to red, oxygen mapped to green and blue, for approximately true color.

pleiotrope,
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@thomasfuchs thank you!

pleiotrope, to Astro
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Milky Way and airglow over Bryce Canyon National Park, June 2023.

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