I have been nerding out over this from the Adam Block Utube channel https://youtu.be/rfmWigz66v0?si=WcIXZi6bWPefi62g

This covers creating a H-R diagram and interpreting the results which takes the images of those of you interested well beyond the actual image itself.

A Hertzsprung-Russell diagram is a scatter plot that classifies stars by plotting their luminosity (or absolute magnitude) against their surface temperature (or spectral class/color). It is a fundamental tool in astronomy that reveals a star's evolutionary stage, with prominent features including the main sequence, giants, supergiants, and white dwarfs. The diagram shows that hotter, more luminous stars are typically in the upper left, while cooler, dimmer stars are in the lower right. (Google)

Here's the repository link if you want to try it out.

https://www.cosmicphotons.com/pi-scripts/hertzsprungrussell/

Attached is one I generated from one of my images of M 11.

You can do a lot more with it so check it out.

Hertzsprung-Russell Diagram????? WTF (Pixinsight)