Dark tip-tilt sensing

Dark wavefront sensing in its simplest and more crude form is a quad-cell with a round spot of dark ink acting as occulting disk at the center. This sensor exhibits fainter limiting magnitude than a conventional quad-cell, providing that the size of the occulting disk is slightly smaller than the size of the spot and smaller than the residual jitter movement in closed loop. We present simulations focusing a generic Adaptive Optics system using Natural Guide Stars to provide the tip-tilt signal. We consider a jitter spectrum of the residual correction including amplitudes exceeding the dark disk size.

Coverage

Adaptive Optics Systems V

All editors

Marchetti, Enrico; Close, Laird M.; Véran, Jean-Pierre

Series

PROCEEDINGS OF SPIE

Volume

9909

Start page

99096J

Conferenece

Adaptive Optics Systems V

Conferenece place

Edinburgh, UK

Conferenece date

26 June-1 July, 2016

Uri

http://hdl.handle.net/20.500.12386/25911

Url

https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9909/1/Dark-tip-tilt-sensing/10.1117/12.2232460.full

https://arxiv.org/abs/1608.00391

Issn Identifier

0277-786X

Ads BibCode

2016SPIE.9909E..6JA

Rights

open.access

File(s)

Name

99096J.pdf

Description

pdf editoriale

Size

736.99 KB

Format

Adobe PDF

Checksum (MD5)

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Name

1608.00391.pdf

Description

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Size

967.88 KB

Format

Adobe PDF

Checksum (MD5)

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Dark tip-tilt sensing

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