Aside from the obvious increase in cost for wider field, better corrected eyepieces, due to their increased complexity....
1) higher quality glass
2) better, more thorough polish
3) coatings carefully matched to the glass types
4) more care in assembly to insure clean surfaces
5) better quality control (involves time, rejected parts)
6) higher quality and tighter tolerances on mechanics
7) adjustable eyecup
A quality eyepiece provides years of service with many telescopes, and seems a worthwhile investment. I think a lot of us spend more than we need to, not because we buy more eyepiece than we need, but because we buy more eyepieces than we really need. In most cases, we don't really need "the complete set."
Clear skies, Alan (one more eyepiece and I'll need a new case)
1) higher quality glass
2) better, more thorough polish
3) coatings carefully matched to the glass types
4) more care in assembly to insure clean surfaces
5) better quality control (involves time, rejected parts)
6) higher quality and tighter tolerances on mechanics
7) adjustable eyecup
A quality eyepiece provides years of service with many telescopes, and seems a worthwhile investment. I think a lot of us spend more than we need to, not because we buy more eyepiece than we need, but because we buy more eyepieces than we really need. In most cases, we don't really need "the complete set."
Clear skies, Alan (one more eyepiece and I'll need a new case)
