I think that it is unlikely that your problem is a poor scope. The several SW 80s [including mine] that I have used, all have excellent optics for a cheap achromat, and have amazingly little chromatic aberration for such
a cheap scope. The focusers are pretty crappy though. If you look at the
recent post of mine with two images of Eta Carina, the smaller scale one was taken with my SW 80. The strange triple stars in your image are not
likely to be a problem with your objective lens.
raymo
|