Chriske

Thats why we're busy building all these actuators, to remove all these aberrations...😁

During open door we also showed working models of the actuators. The smaller one in the front is the actual size, the white copy is at scale 3:1

And a very last one...

A picture while were at it... Almost done...

Forgot to mention. In the most upper (printed) part there's room for a laserpointer to align the unit to the north. In that part the hole for the major (M16) bolt and the hole for the laser are printed in one piece, so I can set it up very accurately. The laser is adjusted in a lathe.

Some progress ... Mount not finished yet Upper polar axis, threaded rod M16 Lower polar axis, brass axis 12mm Movement... EP04.mp4 Still... drive unit + motor to be installed.

Today the secondary mirror will be installed It has a diameter of 800mm, Also gold coated.

The mirrors are a bit deformed because we have tilted the complete set 15° forward. When the mirrors will be relocated to it's final destination all will be installed perfectly vertical and the deformations will disappear.

Btw the curly boy in the mirror's reflection holding the camera is me. In real I am not that curly...😁

This is the 'final' product, the first version is just 4.2m high because the room were it is stored during our open door is only that high. After open door it will be relocated to our planetarium were the full height will be installed. 6.5m

A few more changes. The two red axis are both fixed. They will be connected by a GT2 belt or maybe a set of gears don't know yet. The cycloidal drive has a reduction of 15x For quick adjusting the polaraxis I'll add a green laser parallel to the upper polar threaded rod.

To be more flexible I'll drop the bevel gears and replace it with a stepper and a Cycloidal Drive.

Not yet started building. A few changes have been applied, has to do with the tracking speed. Instead of bevel gears I'll be using a Worm/wormwheel set.

I already made a JWST scale model 1:7...😉