Petr Hykš:
(Mizar A & Mizar B) & Alcor double stars (original photo)
Petr Hykš:
Albireo double star (β¹ Cygni & β² Cygni)
Petr Hykš:
Theta Tauri double star (θ¹ Tauri & θ² Tauri) just before occultation
Petr Hykš:
Nova Cassiopeiae 2021 (V1405 Cas)
Petr Hykš:
M101 galaxy and supernova