I have just returned from a week of observing on the lovely island of La Palma (Spain). Mainly for deep sky, but since the seeing on the top of mountain is well known for its quality, I could not resist to observe at least SOME double stars as well . Here's my catch.
First one up was Porrima on the very first day I arrived. The observation was done in the garden next to the house, where the seeing is less (but still adequate) and the darkness still reaches a comfortable 21.6 mpsas. Porrima was easily split, with both stars (evenly) bright. The colors were perceived as white, although the A component may have appeared a bit yellowish.
Four days later I made the trip to the top of the Roque de los Muchachos at a height of 2400+ mtrs when the wind calmed a bit and there was no risk of high clouds. I set up my telescope with perfect view on the southern horizon. The seeing was very good and darkness reached 21.8 mpsas.
Still in twilight I started observing Sirius and was hoping to spot the pup as well. I was not disappointed... Sirius was a marvellous sight, not at all the same as the way I'm used to viewing it in my home country. A beautiful, bright, white light accompanied by a very tiny speck of light on the east side, much weaker than I expected, but continuously visible.