Diagram
                                Date
                            
                            
                                12 December 1705
                            
                            
                        
                            
                            
                            
                                Creator
                            
                            
                                Unknown, Artist
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Archive reference number
                            
                            
                            
                        
                            
                            
                            
                                Manuscript page number
                            
                            
                                p1
                            
                            
                        
                            
                            
                            
                                Material
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (page): 328mm
width (page): 210mm
                            
                        
                            
                            
                            width (page): 210mm
                                Subject
                            
                            
                            
                        
                            
                            
                            
                                Description
                            
                            
                                A figure of the celestial sphere in John Flamsteed's letter to Abraham Sharp dated 12 December 1705, to help with the calculation of the true longitude and latitude of a celestial object.
Abraham Sharp (1653-1742) was Flamsteed's assistant in 1684, and also in 1688-91. From 1694, he ran a family estate at Little Horton, near Bradford (see Correspondence of Flamsteed, ed. by Forbes et al., vol. 3, p. 968).
                            
                            
                        
                            
                            
                            Abraham Sharp (1653-1742) was Flamsteed's assistant in 1684, and also in 1688-91. From 1694, he ran a family estate at Little Horton, near Bradford (see Correspondence of Flamsteed, ed. by Forbes et al., vol. 3, p. 968).
                                Object history
                            
                            
                                MS/798 is a collection of letters by John Flamsteed and his wife, and by Mr Crosthwait, to Abraham Sharp between the years 1702 and 1730.
                            
                            
                        
                            
                            
                            
                                Related fellows
                            
                            
                                John Flamsteed (1646 - 1719, British) , Astronomer
                            
                            
                        
                            
                            
                            
                                Associated place