Credit: © The Royal Society
                             
                         
                     
                         
                         
                             
                                 Image number: RS.9803
                             
                         
                         
                     
                 
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            Methods of ‘gaging the heavens’
                                Date
                            
                            
                                April 1784
                            
                            
                        
                            
                            
                            
                                Creator
                            
                            
                                William Herschel (1738 - 1822, German-British) , Astronomer
                            
                            
                        
                            
                            
                            
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                                Dimensions
                            
                            
                                height (drawing): 328mm
width (drawing): 201mm
                            
                        
                            
                            
                            width (drawing): 201mm
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                                Description
                            
                            
                                Plate 18 figures 17-18 for the paper “Account of some observations tending to investigate the construction of the heavens”, by William Herschel, Philosophical Transactions of the Royal Society, vol.74 part 2 (1784), pp.437-451. Figure 17 is Herschel’s demonstration of observing the Milky Way galaxy stars using telescopes of different apertures. Figure 18 shows a method of determining the Sun’s location in relation to other objects in what Herschel termed the ‘stratum’ of the Milky Way.   
                            
                            
                        
                            
                            
                            
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