Okay, I Should Have Put This In the Spider Post

If you look at pictures of bright stars photographed through reflecting telescopes so big that they have operators because the astronomer could never do both direction and observation, you will often see either four or six spikes off the star.  Four spikes means a four leg spider; six spikes means a three leg spider.  The spikes from a three spider are supposedly less bright than from a four leg spider but I confess the difference is usually too subtle for me to see.