Sticking with the program of using Eta as a "standard candle" decided to point my new Takahashi FSQ-85 (Baby Q) at Eta Carina to get a handle on its performance.
The standard focuser worked extremely well. Very little play and it certainly coped with a STT-8300 plus 8 position wheel without much fuss.
The system was not par-focal from H-alpha to Blue, but I strongly suspect a filter thickness variation from NB to RGB sets. With the moon running to full, I decided H-alpha for now was the go.
Anyway, as they say, a picture is worth a thousand words.....
First light image is here