Preliminary measurements of residual tip-tilt motion and strehl ratios for laser guide star compensation at lick observatory

Julian C. Christou; Don Gavel; Jennifer Patience; Elinore Gates

doi:10.1117/12.454805

Preliminary measurements of residual tip-tilt motion and strehl ratios for laser guide star compensation at lick observatory

Julian C. Christou, Don Gavel, Jennifer Patience, Elinore Gates

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

Adaptive optics performance using a sodium laser guide star at the Lick Observatory 3.0 m telescope is presented. In order to accomplish this the residual effects of natural guide star tip-tilt motion is removed. This is measured from 500 short exposure images (t _exp = 57ms). The data show instantaneous Strehl ratios ranging from ∼0.10 to ∼ 0.45 with a mean value of ∼0.26. Centroid tracking of these data yield residual tip-tilt errors of ∼21 mas, within specifications for the system. This residual tip-tilt motion reduces the Stehl ratio of long exposure imaging by only ∼7%.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Editors	R.K. Tyson, D. Bonaccini, M.C. Roggenmann
Pages	317-324
Number of pages	8
Volume	4494
DOIs	https://doi.org/10.1117/12.454805
State	Published - 2002
Externally published	Yes
Event	Adaptive Optic Systems and Technologies II - San Diego, CA, United States Duration: Jul 30 2001 → Aug 1 2001

Other

Other	Adaptive Optic Systems and Technologies II
Country/Territory	United States
City	San Diego, CA
Period	7/30/01 → 8/1/01

Keywords

Adaptive optics
Astronomy
Laser guide stars
Strehl ratio
Tip-tilt motion

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

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10.1117/12.454805

Cite this

Christou, J. C., Gavel, D., Patience, J., & Gates, E. (2002). Preliminary measurements of residual tip-tilt motion and strehl ratios for laser guide star compensation at lick observatory. In R. K. Tyson, D. Bonaccini, & M. C. Roggenmann (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4494, pp. 317-324) https://doi.org/10.1117/12.454805

Preliminary measurements of residual tip-tilt motion and strehl ratios for laser guide star compensation at lick observatory. / Christou, Julian C.; Gavel, Don; Patience, Jennifer et al.
Proceedings of SPIE - The International Society for Optical Engineering. ed. / R.K. Tyson; D. Bonaccini; M.C. Roggenmann. Vol. 4494 2002. p. 317-324.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Christou, JC, Gavel, D, Patience, J & Gates, E 2002, Preliminary measurements of residual tip-tilt motion and strehl ratios for laser guide star compensation at lick observatory. in RK Tyson, D Bonaccini & MC Roggenmann (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4494, pp. 317-324, Adaptive Optic Systems and Technologies II, San Diego, CA, United States, 7/30/01. https://doi.org/10.1117/12.454805

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title = "Preliminary measurements of residual tip-tilt motion and strehl ratios for laser guide star compensation at lick observatory",

abstract = "Adaptive optics performance using a sodium laser guide star at the Lick Observatory 3.0 m telescope is presented. In order to accomplish this the residual effects of natural guide star tip-tilt motion is removed. This is measured from 500 short exposure images (t exp = 57ms). The data show instantaneous Strehl ratios ranging from ∼0.10 to ∼ 0.45 with a mean value of ∼0.26. Centroid tracking of these data yield residual tip-tilt errors of ∼21 mas, within specifications for the system. This residual tip-tilt motion reduces the Stehl ratio of long exposure imaging by only ∼7%. ",

keywords = "Adaptive optics, Astronomy, Laser guide stars, Strehl ratio, Tip-tilt motion",

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year = "2002",

doi = "10.1117/12.454805",

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volume = "4494",

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editor = "R.K. Tyson and D. Bonaccini and M.C. Roggenmann",

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T1 - Preliminary measurements of residual tip-tilt motion and strehl ratios for laser guide star compensation at lick observatory

AU - Christou, Julian C.

AU - Gavel, Don

AU - Patience, Jennifer

AU - Gates, Elinore

PY - 2002

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N2 - Adaptive optics performance using a sodium laser guide star at the Lick Observatory 3.0 m telescope is presented. In order to accomplish this the residual effects of natural guide star tip-tilt motion is removed. This is measured from 500 short exposure images (t exp = 57ms). The data show instantaneous Strehl ratios ranging from ∼0.10 to ∼ 0.45 with a mean value of ∼0.26. Centroid tracking of these data yield residual tip-tilt errors of ∼21 mas, within specifications for the system. This residual tip-tilt motion reduces the Stehl ratio of long exposure imaging by only ∼7%.

AB - Adaptive optics performance using a sodium laser guide star at the Lick Observatory 3.0 m telescope is presented. In order to accomplish this the residual effects of natural guide star tip-tilt motion is removed. This is measured from 500 short exposure images (t exp = 57ms). The data show instantaneous Strehl ratios ranging from ∼0.10 to ∼ 0.45 with a mean value of ∼0.26. Centroid tracking of these data yield residual tip-tilt errors of ∼21 mas, within specifications for the system. This residual tip-tilt motion reduces the Stehl ratio of long exposure imaging by only ∼7%.

KW - Adaptive optics

KW - Astronomy

KW - Laser guide stars

KW - Strehl ratio

KW - Tip-tilt motion

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BT - Proceedings of SPIE - The International Society for Optical Engineering

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Preliminary measurements of residual tip-tilt motion and strehl ratios for laser guide star compensation at lick observatory

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Keywords

ASJC Scopus subject areas

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