Observation of Mercury planet Sodium tail

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Christian Buil
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Joined: Mon Sep 26, 2011 6:59 pm
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Observation of Mercury planet Sodium tail

Post by Christian Buil »

Detection of Sodium tail from Mercury's exosphere, the May 17, 2021, by using a very low cost instrumentation, the Star'Ex spectrograph (1200 l/mm grating) on a 8-inch Newton telescope. About Star'Ex see:
http://www.astrosurf.com/solex/sol-ex-stars-en.html.

The result:

Image

The sodium tail can detected on the anti-sunward side of the planet. Note also the presence of Earth airglow (mesosphere sodium emission at 90 km altitude, visible during twilight). Note also the small Doppler shift between the Mercury and Earth doublet emission at 5890-5896 A.

Christian Buil
Joan Guarro Flo
Posts: 611
Joined: Thu Nov 03, 2011 8:50 pm

Re: Observation of Mercury planet Sodium tail

Post by Joan Guarro Flo »

Nice job Christian !

Joan.
etienne bertrand
Posts: 1040
Joined: Mon Aug 31, 2015 11:26 am

Re: Observation of Mercury planet Sodium tail

Post by etienne bertrand »

Tu as essayé de traiter le spectre Christian ? voir combien on trouve en vitesse ?
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