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EarthSky Community Photos
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Steven Bellavia
Southold, NY
Southold, NY
04/24/2022
08:55 pm
08:55 pm
Borg 90FL, Edmund 589nm (sodium) narrowband (10 nm) filter, ZWO ASI 294MM Pro
20 x 60 seconds, aligned and stacked
A 24 million km long plume of gas is ejected from Mercury's thin atmosphere due to the sun, very much like a comet.
This is only visible using a narrowband filter that captures the bright yellow sodium light at 589nm.
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