Assertion: eyepiece's magnification | /r/HasProperty | possible
Facets:
value: without the barlow
type: OTHER
value: with high optical performance
type: OTHER
Source sentences:
text: Large and relatively flat mirrors have very long focal lengths, so that great angular magnification is possible.
text: Higher magnifications are possible with high optical performance compared to "doubling up" Barlows.
text: (b) If there are two other objectives that can be used, having magnifications of 100 and 400, what other total magnifications are possible?
text: Higher magnifications can be attained with longer focal-length eyepieces than would be possible without the Barlow.