1 INTRODUCTION  
2 V1598 Cyg IN THE LITERATURE  
3 OBSERVATIONAL DATA  
3.1 HOYS Data  
3.2 Supplementary long term photometric data  
4 THE VARIABILITY OF V1598 Cyg  
4.1 General phenomenology and long term trends  
4.2 Period of V1598 Cyg  
4.3 Amplitudes of the V1598 Cyg variability  
5 SPOT MODELLING  
5.1 Estimating the stellar surface temperature  
5.2 Spot properties during high cadence observations  
5.3 Amplitude and spot properties for the entire light curve  
6 DISCUSSION  
6.1 Review of methodology  
6.2 Spot properties on V1598 Cyg  
6.3 Spot evolution  
7 CONCLUSIONS