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:
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
Observation of Mercury planet Sodium tail
-
- Posts: 1431
- Joined: Mon Sep 26, 2011 6:59 pm
- Contact:
-
- Posts: 618
- Joined: Thu Nov 03, 2011 8:50 pm
Re: Observation of Mercury planet Sodium tail
Nice job Christian !
Joan.
Joan.
-
- Posts: 1040
- Joined: Mon Aug 31, 2015 11:26 am
Re: Observation of Mercury planet Sodium tail
Tu as essayé de traiter le spectre Christian ? voir combien on trouve en vitesse ?