I am continuing a topic begun with 41 Draconis under a more general heading because one can roam all over the sky viewing binocular double stars, among sundry other things. Any number of doubles outside of Draco have already been reported in the original topic. Ironically, I'm going to start the new topic again with 41 Draconis along with a double star in Camelopardalis, Struve 1694, which I stumbled upon when comparing 41 Dra in various binoculars. The two doubles are so similar in appearance it took a minute before I realized I was looking at a different system. After studying it for a short time, I realized the nearby field stars somehow looked different. No wonder, considering I wasn't even in the same constellation. Both are fun challenges for mounted 10x50 binoculars -- way too close to resolve hand held. That might be done with an IS binocular, however. They are gorgeous in larger binoculars.
STF 2308 / 41 Draconis
5.70/6.0 18.77" pa 231.8*
The components are close but nevertheless fully resolved with 10x50 binoculars. The colors of the two components are often reported as creamy white but they look more bluish to me, at least with small to moderate size instruments. A slight different in magnitude can be seen and in larger instruments the primary does look slightly warmer in tone.
STF 1694 Camelopardalis
5.29/5.79 21.8" pa 324*
Slightly brighter and wider than 41 Dra, the components are a little easier to resolve but still quite close in 10x50 instruments -- observed with a Nikon 10x50 AE binocular. With the 100XL-SD+14mmXW eyepieces, the primary is light yellow and the secondary a bluish white. Color not discernable in the 10x50.
Edited by Fiske, 21 October 2021 - 09:47 PM.