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Community photo entitled  by Steven Bellavia on 10/11/2022 at New Suffolk, NY

On 10/11/2022 05:56 am by Steven Bellavia| New Suffolk, NY

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.

Mercury's tail was captured Using an Edmund Optics 589 nm, 10nm bandwidth filter in an custom 3-D printed enclosure
Borg 90FL, f/4 fluorite refractor
ZWO ASI 294MM pro camera, cooled to -10C

17 x 60 second photos, calibrated and stacked to reveal the fain tail of the planet Mercury