Hi
Attached are some solar images taken on the 18th May LT from Melbourne.
102mm f/9 refractor + home built spectroheliograph.
Data selected & stacked with AutoStakkert3!
Deconvolution with AstroSurface.
I have included images in Ha, CaK, Na (D1 & D2) and Mg (b1)
Seeing varied between 2.4" to 3.3".
Better Ha image here:
https://flic.kr/p/2pRLrRB that can be downloaded.
All images reduced & compressed to fit here.
For interest I have also added spectral fit lines against a reference standard also showing the dispersion.
Cheers
Maurice