This build is quite an eye-opener Peter, Constructing and applying modifications to the main assemblies.
Ive just for the 1st time googled "Lazzarotti Optics" and what an interesting configuration the "GLADIUS" is !
Also came across this relative article on "Astigmatism" with one of the initial scope lines - may be of interest to you Peter, or maybe you have already ?
Anyway, Totally enjoyed reading your thread all the same !
Rgrds - 3rd or 4th paragraph down introduces the astigmatism.
http://astro-foren.de/index.php/Thre...%80%93-part-I/