Status report of ao188 lgs future ao
This presentation is the property of its rightful owner.
Sponsored Links
1 / 7

Status report of AO188+LGS (+future AO) PowerPoint PPT Presentation


  • 47 Views
  • Uploaded on
  • Presentation posted in: General

Yutaka Hayano (Subaru Telescope, NAOJ) S. Oya, M. Hattori, Y. Saito, Y. Minowa, M. Ito, H. Terada, T.S. Pyo, H. Takami, M. Iye (NAOJ), S. Egner (Kayser-Threde GmbH), S Oyabu (Nagoya U.). Status report of AO188+LGS (+future AO). Topics in 2010. Recovery of damaged deformable mirror.

Download Presentation

Status report of AO188+LGS (+future AO)

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Yutaka Hayano (Subaru Telescope, NAOJ)

S. Oya, M. Hattori, Y. Saito, Y. Minowa, M. Ito, H. Terada, T.S. Pyo, H. Takami, M. Iye (NAOJ), S. Egner (Kayser-Threde GmbH), S Oyabu (Nagoya U.)

Status report of AO188+LGS(+future AO)


Topics in 2010.

  • Recovery of damaged deformable mirror.

  • LGS mode commissioning.

  • Risk-shared open use at S11A and S11B.


New deformable mirror (DM)

  • DM was damaged in Jan, 2010.

    • High AC current was applied to the two ground pins.

  • New DM has delivered in August, 2010

  • Implemented electrical circuit breaker.

  • Implemented software limit switch.

  • On-sky performance test in October, 2010.

  • Back to open use operation in November, 2010.

  • Web release on Dec. 27, 2010.


Performance of NGS mode.


Commissioning of LGS mode.

  • First closed loop on sky in December, 2010.

  • Strehl ratio ~ 0.1 – 0.2 @ K-band

  • FWHM ~ 0.1 arcsec @ K-band

  • Performance v.s. guide star magnitude.

    • 17.8 mag equiv @ 1 kcps / APD (Low-order WFS.)

  • Performance v.s. separatation of TT guide star.

    • Anisoplanatism of TT/focus mode might be larger than 60”.


Risk shared open use

  • Risk in performance.

    • SR ~ 0.1 – 0.2, FWHM ~ 0.1” at K-band.

    • Guide star magnitude: brighter than 17.5 in R-band.

    • Separation of guide star: < 80”.

    • Elevation limit = 25 deg.

  • Other features.

    • ADC

      • Science path, high-order WFS, low-order WFS.

    • F-conversion optics. (12 mas mode.)


Future AO for Subaru Telescope.

  • 3rd generation AO for next instrument at IR.

    • Wider field coverage. (~ 10 arcmin.)

    • High throughput. (Adaptive secondary mirror.)

    • Active/Adaptive optics.

    • Multiple guide stars and multiple WFSs.

    • MOAO, GLAO, LTAO etc.


  • Login