A-LEVEL Exam A-LEVEL Physics
                    
                        3.9.1.1 Astronomical telescope consisting of two converging lenses
                    
                                    
                
                    
                        3.9.1.2 Reflecting telescopes
                    
                                    
                
                    
                        3.9.1.3 Single dish radio telescopes I-R U-V and X-ray telescopes
                    
                                    
                
                    
                        3.9.1.4 Advantages of large diameter telescopes
                    
                                    
                
                    
                        3.9.2.2 Absolute magnitude M
                    
                                    
                
                    
                        3.9.2.3 Classification by temperature black-body radiation
                    
                                    
                
                    
                        3.9.2.4 Principles of the use of stellar spectral classes
                    
                                    
                
                    
                        3.9.2.6 Supernovae neutron stars and black holes
                    
                                    
                
                    
                        3.9.3.1 Doppler effect
                    
                                    
                
                    
                        3.9.3.2 Hubble's law
                    
                                    
                
                    
                        3.9.3.4 Detection of exoplanets
                    
                                    
                