An Exciting New Tool to Create Your Own Hertzprung-Russell Diagrams

by John Hayes

Objects in field: 47 Tuc Cluster, NGC 104, NGC 121, 47 Tuc, tet Tuc, The star θ Tuc

Equipment: Astro-Physics StarFire GTX 130mm f/6.3 (3.5"), QHYCCD QHY600PH M

Integration: 7h 50m

Early last summer, while I was working on a new image, it occurred to me that the SpectrophotometricColorCalibration tool in PixInsight was generating all of the information that is needed to plot star data from a globular cluster as a Hertzsprung-Russell diagram. A couple of decades ago I used to write a lot of code but those days are long gone so I personally didn’t have the skills to do…