Type A Stars and their Spectra

A quick look at 2 prominent stars, Sirius and Canopus.

• What defines a star as type A in its spectrum?
• What is specially interesting about these 2 stars?
• What equipment is required to obtain a good spectrum?
• Determining atmospheric temperature?
• Why do we want to do follow up work?

Ken McEwen

Ken is a SASI life member with years of hands-on expereince in all aspects of amatuer astronomy including visual, astrophotography, and star spectra. He is our resident guru on the latter, and recently worked with another SASI menber, Sany Galos, at his property near Mudgee to take a series of spectra over multiple nights.