Observers in the British Isles with a clear sky one hour after sunset on 24 August should find a location that offers an unobstructed view of the south-southwest horizon. Here you will see first-magnitude star Antares in the constellation Scorpius, Mars and Saturn all in a line easily encompassed by low-power binoculars in the bright twilight.
Steve Ringwood appraises the VMC110L, a novel “grab ‘n’ go” modified Cassegrain telescope of 110mm aperture and 1035mm focal length (f/9.4) from renowned Japanese manufacturer Vixen. The instrument features twin 1¼” eyepiece ports — one of which can be used for imaging or photography — and an internal flip mirror system to quickly switch between the two.
In this image from NASA’s Cassini spacecraft, Saturn’s moon Dione reveals its past via contrasts. The features visible here are a mixture of tectonics — the bright, linear features — and impact cratering — the round features, which are spread across the entire surface.