Ahh, just found the focal length in a photo of it. It's an F/8, you're correct. Yes, the 6mm came with it, as did the barlow. I'll look this evening as to the markings on the eyepieces, but I suspect you're right. **EDIT** did a google search, found it in this thread:
http://www.cloudynights.com/ubbthrea...l/fpart/1/vc/1
- specifically on p2 of that thread, down the bottom of the page.
They are Huygens. Back in the 1980's when this scope was made, I think it was only $99 new, so that would be about right. The 20mm is quite good though (at least to my untrained eye), even with the barlow, its mainly the 6mm that is not so good. Good enough for me, but I can tell that if I compared it to some really good eyepieces I would never look through them again. That's what worrie$$$$ me
Cheers, graham