Don

Talk about getting it right!
Larry Niven and Jerry Pournelle as a writing team are my favorite science fiction authors. Lucifer's Hammer was brilliant, "The Post Man, in my opinion, was a cheap unauthorized ripoff of a small part of the brilliant novel..

I'm quite familiar with the Alderson points and have read both of them describe the theory. I hope I don't embarrass you by pointing out that according to "A Mote in God's Eye" red giants don't have coronas. And indeed the exploration team used and Alderson point within a Red Giant to transit into the Mote, which became an essential plot point for the book in that the properties of the Red Giant enabled the blockade which prevented the war of extermination of the Moties.

Of course their ships could only travel within the Sun with the help of the radiation field which I now forget the name of. Was it a "Sinclair Field?" Larry and Jerry loved Scottish engineers even more than Rodenberry did.