By basic lens you are refrring to the 20mm eyepiece which would come to
focus. The 6mm eyepiece is too much power fore this scope and any image
you get is a dark blur - corrrect? So use only the 20mm and the barlow
with the 20mm which halves the 20mm to a 10mm eyepiece. Next time
buy a better telescope: astromart.com. Lesson learned.



Michael Humphrey wrote:

I have just bought a 700-80 telescope with the following lenses 20mm, 6mm, a
2x Balrlow lens, and a T-18 erecting lens. Using the basic lens I can get a
fair image of the moon but all attempts at using any of the other lenses to
look at anything fail. What am I doing wrong?