2015MNRAS.446..627C

Query : 2015MNRAS.446..627C

2015MNRAS.446..627C - Mon. Not. R. Astron. Soc., 446, 627-632 (2015/January-1)

Experimental validation of Lyot stop apodization in ground-based coronagraphy.

CAGIGAS M.A., VALLE P.J., CAGIGAL M.P., PRIETO-BLANCO X., PEREZ-GARRIDO A., VILLO-PEREZ I., FEMENIA B., PEREZ-PRIETO J.A., RODRIGUEZ L.F., LOPEZ R., OSCOZ A. and REBOLO R.

Abstract (from CDS):

We show that the use of apodizing functions at the coronagraph Lyot plane may be useful for improving the image contrast of ground-based coronagraphs. An experimental set-up consisting of a tip-tilt mirror, a coronagraph and a low-noise EMCCD camera was implemented at the William Herschel Telescope. Images were taken in the I band, which meant that the D/r0 value was around 10. Experimental results confirm that, for moderately aberrated wavefronts, our instrument works as theoretically expected, and that the contrast value attained is high enough to provide direct detection of faint companions.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): instrumentation: high angular resolution - stars: imaging

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 * bet Tri SB* 02 09 32.62712 +34 59 14.2694 3.26 3.14 3.00 2.86 2.78 A5III 230 0
2 HD 71881 ** 08 31 55.0356850730 +50 37 00.089230131   8.06   7.0   G1V 88 0
3 HD 77407 PM* 09 03 27.0837288552 +37 50 27.493558584   7.63 7.04     G0V 110 0
4 HD 112196 PM* 12 54 40.0155713280 +22 06 28.557915876   7.54 7.00 7.950   F8V 71 0
5 Ross 1007 PM* 13 19 40.1255632811 +33 20 47.508282622   12.16   10.179   M2V 139 0
6 BD+25 3173 PM* 16 58 08.8496107083 +25 44 38.974052855 12.342 11.139 9.655 8.685 7.602 M2V 273 1
7 Ross 265 ** 22 01 49.04542 +16 28 02.8446 13.378 12.175 10.653 9.61 8.334 M2.5V 72 0

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