astronomy.network The Website of Lichfield Radio Observatory (LRO) – Page 35 – Andrew Thornett, Lichfield, England, M6THO, andrew (at) thornett (dot) net

New attempt at focusing Sol’Ex collimation tube – focus point achieved with ZWO ASI 174MM camera 8/6/2024

New photos of Sol’Ex aluminium collimator tube and Shelyak collimator lens, ZWO helical focuser and ZWO ASI 174 MM camera

Thanks Minh for this advice! Andy

Time to protect the wood! The observatory is 8-10 years old now. I’ve replaced the roof at one point from

Correctly focusing Sol’Ex camera tube by taking it out of Sol’Ex, mounting on tripod, and aiming at star at night.

Nice and dark with very few bright pixels – shows no light leak on Sol’Ex – great stuff! Andy

I am finding this very difficult to ascertain – using Christian Buil’s advice, the setting is 2.62mm on the ZWO

Note Christian Buil’s website & Youtube have many more excellent tutorials and information on Sol’Ex – these three are summary

Slight focusing movements only required – amazing effect! Andy

Made with some threaded screw rod and square nuts. Andy

Arrived this morning, transferred optics from 3D-printed plastic Azur3D Solex to new aluminium Sol’Ex this afternoon, couldn’t initially get a