Testing the imaging quality proved difficult to say the least. With nine points to adjust and some structural flexing focusing and collimation is almost impossible. Overall the system seems a bit soft and low contrast, but at least on H-alpha narrowband filters it gave a fairly good resolution on the focused area. Still, the high intensity regions bleed over darker ones reducing the contrast a bit too much. Additional baffling migh help keep the stray light away, but the glow around bright areas does indicate that high contrast isn't a priority for these lenses.
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