The objective for this study will be to explore new photometric methods for amateur telescope
observations of ‘cluster variables’ and globular clusters using CCD photometry. Amateur telescope
photometric observations of ‘cluster variables’ in globular clusters are limited because of dense,
crowded star fields. However, with improvements in CCD photometric methods, there are
opportunities to observe cluster variables, such as RR Lyrae and SX Phoenicis type stars, through time
series analysis of multiple exposures of whole cluster images.
Traditional methods for determining light