Astrostack

Anyone have much experience with this program? I downloaded it, and seems like I'm trying it right, I have 3 moon pictures saved as moonO1.bmp, moonO2.bmp and moonO3.bmp. I click on the load BMP, it say's "first pictures in series" I click on the moonO1 then it says, "last picture in series" I click on the moonO3, the window goes away and it says "range check error" I've tried just moon1 and 2 and just 2 and 3 tried backwards, forward, no matter what I get that error, any ideas? Thanks, Ron

It is kind of quirky that way. Try a three digit index scheme like "moon601.bmp, moon602.bmp, moon603.bmp".