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Catching Celestial Butte

机译:捕捉天体的屁股

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摘要

Planetary nebulae are among the most rewarding celestial targets for observers and astrophotographers alike. They're expanding gaseous shells ejected in the final stages of an intermediate-mass star's life and present intriguing, small-scale details not found in other emission or dark nebulae. And while the majority are on the small side, they typically have high surface brightness, which allows them to punch through light pollution — something that makes planetaries particularly appealing for urban astro-imagers shooting under bright skies.
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