Astronomy   View all facts   Glossary   Help

physical object > artifact > device > instrument > optical device > wavefront modifier > lens > field lens

field lens comparison table

Subject	is a kind of	has definition
lens	wavefront modifier
field lens	lens	A lens placed in or near the focal plane of a telescope to create an image of the primary mirror inside the instrument.

Next lens: achromatic lens    Up: lens    Previous lens: aplanatic system