Kappa Aquilae - Wikipedia
Observing Double/Multiple Star Systems - Remote Astrophotography Using Slooh.com
Sigma Coronae Borealis | Memory Beta, non-canon Star Trek Wiki | Fandom
Delta Ophiuchi - Wikipedia
Alpha Serpentis - Wikiwand
Journal of Double Star Observations - JDSO.org
Double and Multiple Stars
Hercules | Star-Splitters | Page 2
Webb Deep-Sky Society: Double Star of the Month Archive 2021
へび座カッパ星 - Wikipedia
A Complication of Stars in Delphinus, Part One: HO 131 and S 752/Bu 987/Fox 254 | Star-Splitters
Beta Herculis - Wikipedia
Star-Hopping in the Northern Marches of Corona Borealis, Part Two: Kappa (κ) and Σ 1983; Zeta (ζ) and Σ 1964 ; and Lambda (λ) | Star-Splitters
Kappa Herculis
カシオペヤ座カッパ星 - Wikiwand
Kappa Cygni - Wikiwand
Evaluating my double star discoveries - Double Star Observing - Cloudy Nights
Thuban - Wikiwand
Kappa Draconis - Wikipedia
Hercules | Star-Splitters | Page 2
Webb Deep-Sky Society: Double Star of the Month Archive 2021
Hercules | Star-Splitters | Page 2
Epsilon Ophiuchi - Wikipedia
