Mt T H Waller of York in 1865 using a 4.75 inch Cooke telescope was trying to observe the satellites of Jupiter when unfortunately the planet was obscured by some trees and he was unable to see the immersion of the second satellite or the transit of the third. Fortunately by the time that the fourth satellite was passing in front of Jupiter it had cleared the trees.
Mr Waller was also a very keen double star observer he would often the double star catalogue of Mr Brothers of Manchester and the Bedford Catalogue.
www.theramblingastronomer.co.uk
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