Thanks guys... I was actually a bit surprised how well it came out too. I was really hoping it'd at least just take the edge of the scratches and make them less noticeable, but I just kept going and eventually it cleared up.
Is the cerium oxide a specific grit? And did you only use a single grit, or was it done in finer increments?
I'm not sure if they make it in various grits or not, but this is the stuff i used:
https://www.amazon.com/Gordon-Glass-Cerium-Oxide-Oz/dp/B007KOC19C . I thought that it may be like other compounds... starting as grittier stuff, then as it wears down, the grit get smaller to more of a fine polish, so I wiped the screen off and dipped my felt pad in the cup every few minutes to get fresh stuff.
I also briefly used sandpaper (progress was slow, so I thought I'd speed things up with sandpaper, then use cerium oxide to remove the scratches from the sandpaper)... I'm not sure how much it helped, though it certainly made new scratches on the screen. In the end, maybe it helped, though I should have been more careful on where I was sanding, since I spent a lot of time removing scratches from the sandpaper where there were no scratches to begin with. I used 120 then 240 grit, wet sanding (using cerium oxide slurry as the "wet", since it was convenient).
I also wore safety glasses, just in case of disaster. The tube got warm eventually, but not hot (I was careful not to stay in one place for too long, and to keep the pad wet).
The most important part was cranking up the music... it was a boring task, and the buzzing sound was annoying, so having good music helped.
DogP