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NASA NTRS · 20100032904

Dilute Aperture Visible Nulling Coronagraph Imaging (DAViNCI)

Shao, Michael·Levine, B. M.·Vasisht, G.·Lane, B. F.·Woodruff, R.·Vasudevan, G.·Samuele R.·Harvey, K.·Clampin, M.·Lyon, R.·Guyon, O.·Tolls, V.
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Abstract

The presentation focuses on instrument and mission overview, science case, Team X study, and technology status. Topics include DAViNCI study milestones, number of targets versus inner working angle, planet orbit and IWA, combiner/nuller instrument, DAViNCI Team X costs, technology status and near future plans, and deep laser null 1.23 x 10(exp -7) suppression. Summary points are: dilute aperture concept advantages, lower cost than a comparable 7-8m coronagraph working at 2 lambda/D, technology progress prior to 2008 was seriously limited by available funding but showed 1e-y suppression (2006) of laser light needed for 1e-9 to approximately 1e-10 contrast, and current technology effort is off to a fast date with a demonstration of less than 100pm wavefront measurement in Nov 08.

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Shao, Michael, Levine, B. M., Vasisht, G., Lane, B. F., Woodruff, R., Vasudevan, G., Samuele R., Harvey, K., Clampin, M., Lyon, R., Guyon, O., Tolls, V.. 2008-12-23. Dilute Aperture Visible Nulling Coronagraph Imaging (DAViNCI). https://ntrs.nasa.gov/citations/20100032904

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