A tandem-vortex coronagraph can in theory enable high-contrast imaging behind a classical on-axis telescope. Here we point out that a tandem-vortex coronagraph configuration can also directly enable the measurement of the phases of focal-plane speckles, thereby allowing for their suppression in the resultant high-contrast image.
© 2011 Optical Society of America
Original Manuscript: May 6, 2011
Revised Manuscript: July 12, 2011
Manuscript Accepted: July 14, 2011
Published: September 26, 2011
Eugene Serabyn, J. Kent Wallace, and Dimitri Mawet, "Speckle-phase measurement in a tandem-vortex coronagraph," Appl. Opt. 50, 5453-5456 (2011)