Tuesday, 9 September 2025

Cooke Telescope Tales - Transit of Mercury in 1907 seen with Cooke telescope from Mauritius

The transit of Mercury was observed on November 14th 1907 from the Royal Alfred Observatory in Mauritius using a Cooke 6 inch refractor. The transit which was seen through a partly  cloudy sky and the limb of the Sun was described as being boiling. Mercury appeared as a clear cut black disc, perfectly circular with no spot or fringe. 

There were 11 photographs taken during the transit with the 6 inch Cooke. The telescope  had ben supplied to Mauritius by the colonial government in1874 in order to observe the transit of Venus.


                                                    www.theramblingastronomer.co.uk

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