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The sky quality-meter measures the brightness of the night sky in magnitudes per square arcsecond
Dimensions Hangs approx 4cm (gift boxed with provenance card)
Ian Cooper and Jenni Kay
Toolebuc Formation
Australian fossil crab ("Torynomma quadrata") Books about Astronomy The sky quality-meter measures theTorynomma quadrata (Square Crustacean Crab) is an extinct marine arthropod from Australias Cretaceous inland seas. This species is dated to approximately 95104 million years ago (Cretaceous) and is known from the Allaru Formation at Currane Station, Ilfracombe, Central West Queensland. The specimen represents a benthic crustacean that lived on or near the sea floor within the warm shallow waters of the Eromanga Sea system. Originally described in 1953
