Was looking at Jupiter, the Moon and Sirius with my ZS66 and Svbony 3-8. Intrigued by something @Mr Spock said about variable polarising filters, I did try a single polarising filter to see if it might reduce scatter. Jupiter looked good unfiltered at 130x, but seemed subtly more defined and stable with the filter, which was a surprising result. I'll try it with a bit more aperture on another night.
Next up was Sirius and my quixotic pursuit of the Pup - a forlorn quest with the ZS66 which can't quite manage Polaris' companion. Nevertheless there seemed less scatter again with the polarising filter. I thought I glimpsed something near Sirius but a check indoors with handy book on double stars indicated the position angle for my glimpse was wrong.
The Moon was nearly full so even the slight filtering of the polarising filter was welcome. Detail seemed incredibly sharp on the terminator even at 130x. I wonder if I upgraded to a "better" grab and go refractor, would the views actually improve in any noticeable way?