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Proceedings Paper

Pupil-segmented photometry for lunar occultation observation
Author(s): Naruhisa Takato
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Paper Abstract

Occultation is potentially a powerful tool for high-resolution astronomy. It can reach about a few milli-arcsec (mas) by lunar occultation observation and 0.1 mas by that of main-belt asteroids. Photon noise limits the resolution. If we use large telescope in order to increase the number of photons received by a telescope, the fringe pattern that is projected on the earth is averaged over the pupil and the visibility will decrease. I propose to use pupil-segmented method and its performance for lunar occultation. The optimum subaperture size is 2-4 m for lunar occultation. This method is effective for large (> 8-10m) telescope. We can resolve in 6 mas for 16 mag star in > 3 σ noise level using 8 m telescope.

Paper Details

Date Published: 7 March 2003
PDF: 5 pages
Proc. SPIE 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, (7 March 2003); doi: 10.1117/12.459998
Show Author Affiliations
Naruhisa Takato, Subaru Telescopes/NAOJ (United States)


Published in SPIE Proceedings Vol. 4841:
Instrument Design and Performance for Optical/Infrared Ground-based Telescopes
Masanori Iye; Alan F. M. Moorwood, Editor(s)

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