Adaptive secondary mirror for the 6.5 m conversion of the multiple mirror telescope: Latest laboratory test results of the P36 prototype

A. Riccardi; G. Brusa; V. Biliotti; C. Del Vecchio; P. Salinari; P. Stefanini; P. Mantegazza; R. Biasi; M. Andrighettoni; C. Franchini; D. Gallieni; M. Lloyd-Hart; P. C. McGuire; S. M. Miller; H. M. Martin

Adaptive secondary mirror for the 6.5 m conversion of the multiple mirror telescope: Latest laboratory test results of the P36 prototype

A. Riccardi, G. Brusa, V. Biliotti, C. Del Vecchio, P. Salinari, P. Stefanini, P. Mantegazza, R. Biasi, M. Andrighettoni, C. Franchini, D. Gallieni, M. Lloyd-Hart, P. C. McGuire, S. M. Miller, H. M. Martin

Research output: Contribution to journal › Conference article › peer-review

10 Scopus citations

Abstract

The 336-actuator adaptive secondary unit (MMT336) for the new MMT is being assembled in Italy and will be delivered in June 2000 for the acceptance test at Steward Observatory (Tucson, AZ). The latest results obtained on a reduced-size (36 actuators) prototype called P36 are reported, confirming a settling time less then 1 ms measured in previous tests. The flattening procedure has been successfully tested on the P36 unit, reducing the initial surface error of 1.1 μm down to 43 nm rms. Moreover the dynamical tests on the P36 unit show that the system is able to attenuate the atmospheric-induced error from 466 nm to 31 nm rms. This in the case of median seeing condition at MMT (0.75 arcsec) a high wind speed (48 m/s) and a 1 kHz command rate per actuator. Finally, in the same conditions the atmospheric error is effectively attenuated up to a frequency of 100 Hz (0dB attenuation level).

Original language	English (US)
Pages (from-to)	I/-
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4007
State	Published - 2000
Externally published	Yes
Event	Adaptive Optical Systems Technology - Munich, Ger Duration: Mar 29 2000 → Mar 31 2000

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Cite this

Riccardi, A., Brusa, G., Biliotti, V., Del Vecchio, C., Salinari, P., Stefanini, P., Mantegazza, P., Biasi, R., Andrighettoni, M., Franchini, C., Gallieni, D., Lloyd-Hart, M., McGuire, P. C., Miller, S. M., & Martin, H. M. (2000). Adaptive secondary mirror for the 6.5 m conversion of the multiple mirror telescope: Latest laboratory test results of the P36 prototype. Proceedings of SPIE - The International Society for Optical Engineering, 4007, I/-.

Riccardi, A, Brusa, G, Biliotti, V, Del Vecchio, C, Salinari, P, Stefanini, P, Mantegazza, P, Biasi, R, Andrighettoni, M, Franchini, C, Gallieni, D, Lloyd-Hart, M, McGuire, PC, Miller, SM & Martin, HM 2000, 'Adaptive secondary mirror for the 6.5 m conversion of the multiple mirror telescope: Latest laboratory test results of the P36 prototype', Proceedings of SPIE - The International Society for Optical Engineering, vol. 4007, pp. I/-.

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title = "Adaptive secondary mirror for the 6.5 m conversion of the multiple mirror telescope: Latest laboratory test results of the P36 prototype",

abstract = "The 336-actuator adaptive secondary unit (MMT336) for the new MMT is being assembled in Italy and will be delivered in June 2000 for the acceptance test at Steward Observatory (Tucson, AZ). The latest results obtained on a reduced-size (36 actuators) prototype called P36 are reported, confirming a settling time less then 1 ms measured in previous tests. The flattening procedure has been successfully tested on the P36 unit, reducing the initial surface error of 1.1 μm down to 43 nm rms. Moreover the dynamical tests on the P36 unit show that the system is able to attenuate the atmospheric-induced error from 466 nm to 31 nm rms. This in the case of median seeing condition at MMT (0.75 arcsec) a high wind speed (48 m/s) and a 1 kHz command rate per actuator. Finally, in the same conditions the atmospheric error is effectively attenuated up to a frequency of 100 Hz (0dB attenuation level).",

author = "A. Riccardi and G. Brusa and V. Biliotti and {Del Vecchio}, C. and P. Salinari and P. Stefanini and P. Mantegazza and R. Biasi and M. Andrighettoni and C. Franchini and D. Gallieni and M. Lloyd-Hart and McGuire, {P. C.} and Miller, {S. M.} and Martin, {H. M.}",

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T2 - Adaptive Optical Systems Technology

AU - Riccardi, A.

AU - Brusa, G.

AU - Biliotti, V.

AU - Del Vecchio, C.

AU - Salinari, P.

AU - Stefanini, P.

AU - Mantegazza, P.

AU - Biasi, R.

AU - Andrighettoni, M.

AU - Franchini, C.

AU - Gallieni, D.

AU - Lloyd-Hart, M.

AU - McGuire, P. C.

AU - Miller, S. M.

AU - Martin, H. M.

PY - 2000

Y1 - 2000

N2 - The 336-actuator adaptive secondary unit (MMT336) for the new MMT is being assembled in Italy and will be delivered in June 2000 for the acceptance test at Steward Observatory (Tucson, AZ). The latest results obtained on a reduced-size (36 actuators) prototype called P36 are reported, confirming a settling time less then 1 ms measured in previous tests. The flattening procedure has been successfully tested on the P36 unit, reducing the initial surface error of 1.1 μm down to 43 nm rms. Moreover the dynamical tests on the P36 unit show that the system is able to attenuate the atmospheric-induced error from 466 nm to 31 nm rms. This in the case of median seeing condition at MMT (0.75 arcsec) a high wind speed (48 m/s) and a 1 kHz command rate per actuator. Finally, in the same conditions the atmospheric error is effectively attenuated up to a frequency of 100 Hz (0dB attenuation level).

AB - The 336-actuator adaptive secondary unit (MMT336) for the new MMT is being assembled in Italy and will be delivered in June 2000 for the acceptance test at Steward Observatory (Tucson, AZ). The latest results obtained on a reduced-size (36 actuators) prototype called P36 are reported, confirming a settling time less then 1 ms measured in previous tests. The flattening procedure has been successfully tested on the P36 unit, reducing the initial surface error of 1.1 μm down to 43 nm rms. Moreover the dynamical tests on the P36 unit show that the system is able to attenuate the atmospheric-induced error from 466 nm to 31 nm rms. This in the case of median seeing condition at MMT (0.75 arcsec) a high wind speed (48 m/s) and a 1 kHz command rate per actuator. Finally, in the same conditions the atmospheric error is effectively attenuated up to a frequency of 100 Hz (0dB attenuation level).

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M3 - Conference article

AN - SCOPUS:0033701446

SN - 0277-786X

VL - 4007

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

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

Y2 - 29 March 2000 through 31 March 2000

ER -

Adaptive secondary mirror for the 6.5 m conversion of the multiple mirror telescope: Latest laboratory test results of the P36 prototype

Abstract

ASJC Scopus subject areas

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