Hi Georg and Alex,
Thanks for all the great work you put into Stellarium. I am getting ready to teach another Stellarium class.
Using the angular distance tool, I am measuring roughly 30 arseconds between Sirius A and B. It should be approximately 11 arcseconds, however. For comparison, I used the Double Almach (Gamma And). It should be roughly 10 arseconds and it shows 10 arseconds with the angular measure.
What am I missing? Images below.
Best wishes,
Matthias