[bojan]

The result of this little project is very good..
The astigmatism is almost totally gone, the stars are nice and round, even in corners of the APS frame.
It was slightly better than my MTO-1000A, now it is much better. And if I count in the lower weight, smaller physical size.. definitely a keeper.

The focussing is a bit tricky, though.. but still doable.
Right now I am pressing the front part of the lens towards the back end.. then focussing by turning the tube to the left, effectively moving the corrector plate with secondary upwards.. this means the relatively massive front corrector can't move by itself downwards any more, so the focus is stable during the photo session.
The image is 16x30sec, darks, flats, crop, size 100%.