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Stellar Coronograph with Phase Mask
Open accessAbstract
The detection of faint light sources very close to a bright star is primarily limited by light scattered by the Earth's atmosphere. This source of scattered light can now be reduced by means of adaptive optics, or totally eliminated by using a telescope in space. Then diffraction by the telescope aperture becomes the primary source of scattered light. Whereas a classical Lyot coronograph can reduce the amount of light diffracted away from the star, it becomes inefficient very close to the star. Instead of forming the stellar image on an opaque mask, it is proposed here to use a small phase plate which produces a 180 degrees phase shift on the core of the stellar image. Light diffracted outside the core is then eliminated by destructive interference. Applied to the Hubble Space Telescope, the technique would easily allow detection of a stellar companion 0.3" away from a star and at least 8 magnitude fainter.
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Citations
Cited by
Foo, G., Swartzlander, G. A., & Palacios, D. (2005) · Frontiers in Optics · doi:10.1364/fio.2005.jwa22 · Cited by 530
FUNDAMENTAL LIMITATIONS OF HIGH CONTRAST IMAGING SET BY SMALL SAMPLE STATISTICS
Mawet, D., Milli, J., Wahhaj, Z., Pelat, D., Absil, O., Delacroix, C., Boccaletti, A., Kasper, M., Kenworthy, M., Marois, C., et al. (2014) · The Astrophysical Journal · doi:10.1088/0004-637x/792/2/97 · Cited by 369
Annular Groove Phase Mask Coronagraph
Mawet, D., Riaud, P., Absil, O., & Surdej, J. (2005) · The Astrophysical Journal · doi:10.1086/462409 · Cited by 360
Perryman, M. (2018) · Cambridge University Press eBooks · doi:10.1017/9781108304160 · Cited by 340
Theoretical Limits on Extrasolar Terrestrial Planet Detection with Coronagraphs
Guyon, O., Pluzhnik, E. A., Kuchner, M. J., Collins, B., & Ridgway, S. T. (2006) · The Astrophysical Journal Supplement Series · doi:10.1086/507630 · Cited by 340
Metadata
- Authors
- Roddier, F., & Roddier, C.
- Venue
- Publications of the Astronomical Society of the Pacific
- Publisher
- IOP Publishing
- Published
- 1997-07
- Volume
- 109
- Pages
- 815
- ISSN
- 0004-6280 (ISSN-L)
- 1538-3873
- OpenAlex
- W2020245669
- Cited by
- 239
- References
- 0
- FWCI
- 2.51
- Type
- journal article
- Language
- en
- Open access
- bronze
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