Hi all
Just recently built myself a spectroheliograph as per Mr C. Buil's Solex recipe & here attached are a few initial attempts in Ha and Hb.
The imaging scope was a SvBony 70mm f/6 refractor
The best 11 Ha scans (rebuilt into a solar disc with the excellent INTI software) of 21 were aligned & stacked in Autotakkert 3! and then wavelet deconvolution sharpened with Astrosurface. Same process for the Hb data, but only 4 scans used here.
I've also attached a crop of a single scan (disc occulted in software) to show the prominence on the top RHS of the frame.
Very compressed versions attached here, slightly better on Flikr here:
https://flic.kr/p/2odApF4
Probably worth a zoom in to near full size..
cheers
Maurice
PS sorry - forgot that I had a Ca band image from the same session & now attached.