Took a while to get my bearings and identify each star in the area. Lots of things going on here! Beautiful observations, it's cool to see some nebulosity in the background while studying doubles!
_My recorded PA's above for Θ 1 are off. During observation, I got Θ 1 A mixed up with Θ 1 C, so my PA's recorded are assuming that C was the primary. At the time C seemed brighter, and perhaps I just assumed that it was the primary?_
AV was required to see the sibling. Even then, it would only "pop" into detection for a moment.
There were three faint "glimmers" around Struve 747 that I thought could be the sibling. After closer examination only the glimmer around 120° and 220° were at the right distance.
The further sibling was found quickly. I had a ton of trouble with the closer sibling. Trying all the methods I could think of to get it to show up failed. I ended up backing off my zoom a bit and micro focusing. Guessed incorrectly first as I thought I saw the closer double around 290°.
Faint and small, but AV isn't required. There is an area of "noise" and glints of light scattered in the midst of the "noise". I could of easily mistaken it for a tight star cluster.
Beautiful and spread out. I can see a smaller cluster just to the south-west. Not sure if it's a separate cluster, or part of this one. I can almost make out the shape of a question mark with some of brighter stars in the middle of the cluster.