Jupiter and its Galilean moons

Top to bottom: - Europa (5.5mag, 1.1") - Io (+5.2mag, 1.3") - JUPITER (-2.9mag, 49.1") - Calisto (+5.9mag, 1.7") - Ganymed (+4.8mag, 1.8") Nikon D5 camera, Nikkor TC20EII teleconverter, Takahashi TOA-130 telescope, ISO400, single 1/30s exposure, f/15.4, cable cord.