Hi John,

> Alt-J gives a dialog box labeled "Enter Index Number:"

??? It should say "Number of test flag:" Which is admitted confusing enough... Alt-J
started out as just being a way to toggle some internal switches for testing purposes;
it's morphed into a more general way to configure internal settings.

It should have added some text to 'guide.dat'. Could you send me that file? I'd
be curious to see what actually got in there.

Oh, by the way... for B1.0, it's not enough just to enter the B1_PATH data. You
also need to use Extras... Toggle User-Added Datasets, find "USNO B1.0", and turn
it On for the desired fields of view.

For MPCORB, you have to go to Extras... Asteroid/Comet options, and make sure
that "Use MPCORB" is turned on.

-- Bill