Notch Filter Masks: Practical Image Masks for Planet-Finding Coronagraphs
Astrophysics
2016-08-30 v2
Abstract
An ideal coronagraph with a band-limited image mask can efficiently image off-axis sources while removing identically all of the light from an on-axis source. However, strict mask construction tolerances limit the utility of this technique for directly imaging extrasolar terrestrial planets. We present a variation on the basic band-limited mask design--a family of ``notch filter'' masks--that mitigates this problem. These robust and trivially achromatic masks can be easily manufactured by cutting holes in opaque material.
Keywords
Cite
@article{arxiv.astro-ph/0209271,
title = {Notch Filter Masks: Practical Image Masks for Planet-Finding Coronagraphs},
author = {Marc J. Kuchner and David N. Spergel},
journal= {arXiv preprint arXiv:astro-ph/0209271},
year = {2016}
}
Comments
27 pages, including 8 figures, to appear in ApJ