Monday, 20 March 2017

Equinoctial Full Disk in Hydrogen Alpha - 20th March

The spring Equinox occurred today at 10.28am, the point where the Earths equatorial plane crosses the Suns equatorial plane.  The Suns disk is fairly blank at the moment, but the double stacked PST with it's enhanced contrast made the subtle dark filaments and brighter plage pop out compared to other wavelengths bringing a bit of interest to our star as we head into the depths of solar minimum.  Taken at 400mm focal length with the PGR Chameleon 3 camera.