Seeing double (and triple) in the spring sky – Astronomy Now
NCKAS -Double Stars
Webb Deep-Sky Society: Double Star of the Month in Bootes
Kappa Boötis - Wikipedia
Double and Multiple Star Measurements in the Northern Sky with a 10” Newtonian and a Fast CCD Camera in 2006 through 2009
Double and Multiple Star Measurements in the Northern Sky with a 10” Newtonian and a Fast CCD Camera in 2006 through 2009
Kappa Bootis
Kappa Boötis - Wikipedia
Boötes Constellation - Herdsman in the Sky | Astronomer's Guide
Some Bright-Sky Observing - Double Star Observing - Cloudy Nights
Astronomical League Double Star Observing Log
NCKAS -Double Stars
Asellus Tertius (κ Boötis) | Facts, Formation, Distance, Size & Mass
Boötes Constellation - Herdsman in the Sky | Astronomer's Guide
Springtime Double Stars in Boӧtes | SkyNews
κ2 Boötis (kappa2 Boötis) - Star in Boötes | TheSkyLive.com
Seeing double (and triple) in the spring sky – Astronomy Now
Webb Deep-Sky Society: Double Star of the Month in Bootes
See Double Stars in the Night Sky: A 'Starhopping' Guide | Space
Bootes | Star-Splitters
The three Asellus Stars in Bootes ( Michael Kraus ) - AstroBin
Observing the sky at 30°S
Webb Deep-Sky Society: Double Star of the Month in Bootes
Bootes | Star-Splitters
κ2 Boötis (kappa2 Boötis) - Star in Boötes | TheSkyLive.com
Kappa Bootis star hop
Asellus Tertius (κ Boötis) | Facts, Formation, Distance, Size & Mass
