How to read Stellar Classification

[CyborgPrime]

I just turned my nerd factor up to 11.

Please enjoy:
https://www.cyborgprime.com/sci-fi-rpg-blog/stellar-astronomy-how-to-decipher-stellar-classification

 

[phavoc]

The old mnemonic "Oh be a fine girl kiss me" works wonders to remember spectral classifications.

 

[Ursus Maior]

Aka Oh Be A Fine [Guy/Gal/Girl] Kiss Me (Right Now [Smack/Sweetheart]): http://www.star.ucl.ac.uk/~pac/obafgkmrns.html