M48 HR data linearity
Scatter plot and linear fit of star flux based raw magnitude vs Tycho catalog magnitude based on Messier 48 open cluster image B and G channel data.
This data is utilized in my Hertzsprung-Russell diagram of M48.
Tycho catalog B and V magnitudes were used, which accounts for small discrepancies since my filters are not photometric.
I also wrote a blog posting about the process.