Interior of the Octagon Room at the Royal Observatory, Greenwich, London Collection_Coronation when the Portuguese made changes

when the Portuguese made changes to the Captain's Saloon arrangement

Artist: Gerard van Keulen

It offers a 25mm focal length objective lens with a lens cap

singly ionized sulphur (SII) is mapped to red and doubly ionized oxygen (OIII) is mapped to the blue channel

Interior of the Octagon Room at the Royal Observatory, Greenwich, London Collection_Coronation when the Portuguese made changesThree figures using astronomical equipment in the Great Star Room or the Octagon Room, as it is known today, at the Royal Observatory. To the left an observer is using a quadrant to carry out astronomical observations. While a seated figure, on the right, studies the sky through a telescope. Portraits of Charles II, whose support Sir Jonas Moore had crucially secured for the founding of an observatory at Greenwich, and James, Duke of York (later James