Description | Copy of image in a letter from Mr Derham recording his 'Observations I made this morning, at 2 of the clock, of Jupiter's appearance through my 34 foot telescope which represented him very clerly and well. In the darkest broadest Belt I could discern a Spot, as in the figure. The uppermost Belt (but really the lowermost, the figure and appearance in the Glass being inverted ) I did not quite traverse the Disc. '
Size 53 mm high x 180mm wide |