At 400x a clean split could be observed for short moments. Both stars are just a bit to bright to give neat images like those of OS 338. There are more diffractionrings and there is some more radiation to disturb the view. Most of the time the stars overlapped and sometimes only a elongated yellow streak of light was to be seen. 

Notes: And yet another clear night came upon us. I cannot believe what is happening here, I did more observing the last two weeks than the six months before.
After the succes of yesterday I went for some more nuts. I was able to go one small step down the ladder of separation and achieved a split of 0.6" this time. 

I started this session in early twilight. As soon as Porrima could be spotted with binoculars I took the CG11 over there and had a look. It was promising, the image was only a fraction less good than yesterday. 

I checked out some of the brighter doubles in Bootes, the ones that I could locate with binoculars and finder. One of those is Zeta Boo, and that's also a real nut!
With a separation of 0.91" and magnitudes of 3.8 and 3.9 Zeta Boo is of the Gamma Vir-type and a real challenge. But there it was, at 560x in moments of good seeing I had good splits of the stars, with only a mess of diffractionrings overlapping eachother.. 

While having a look at the wonderful Kappa Boo and Iota Boo area I came across STF2106 (in Skymap) and noticed the challenging separation of 0.6" (1992). The components of this double are mag. 7.0 and 8.2. Not very equal and therefore even more a challenge.
Well, at 560x I had good splits for moments. Most of the time a messy image, diffractionrings messed up by turbulence and sometimes only an unsharp elongated streak of light. But on the good moments the image seemed to settle down for fractions of seconds.. The star images became sharply defined round dots and the surrounding diffractionrings got a more or less round shape. 

After checking out some more relaxing doubles in Ophiuchus I turned to the nuts again. 
I treid three project-nuts in Hercules and was succesful with two of them. STF2059 with a separation of 0.5" was to much to ask...