Those 11X70 are the best thing I've bought!
Not as heavy as 80mm binos, I've comfortably used them hand held as their magnification isn't too high. But as with most astronomical viewing over an extended period, support is a good idea.
These binos literally had my jaw hit the ground first time I used them at a dark site. The amount of detail they showed in the Milky Way is astounding. I never imagined there was so much dark nebulosity up there. Even around Omega Centauri. Speaking of which, these binos actually resolve this bugger! The detail it shows around Scorpius & Sagitarius is gorgeous.
11X magnification is enough to show Jupiter's moons, but is really too little to show detail on the disk. Saturn too. It may just define the rings, but nothing too definate.
Even from home from Sydney these are excellent.
These binos have an effective true field of view of 4.5deg.
I also considered 80mm binos, & bought one (not the Andrews one) & found it just too big. These are big enough to use by hand, but pack plenty of aperture punch. The lower magnification allows for a very generous true field of view that I prefer.
I love 'em,
