One more example of what the combination Nikon D800 and Pentax 645 FA 300 mm f/4 ED system can deliver.
http://www.astrofriend.eu/astronomy/...851-oam45.html
It's taken from a Bortle Class 9 environment. But the stars are sharp all the way to the corners. Look at the full resolution image and zoom in.
The tilt adjuster is now working, it's a little fine adjustment left to do. A lot of try and error of the setup of KStars to control the Nikon D800 camera. Now it works like a dream. The guide camera ASI120 that I hade problem with in the beginning also do what it should do. The DIY MyFocuserProII also control the fokus motor with high precision, the tangent arm give much better result then the earlier tooth belt drive I had, less friction, less backlash.
Happy life ! Just need some darkness.
Lars