Notes on Keck AO for PSF Recovery Project

AO Parameters

AO Sign conventions

Keck DM to WFS geometry: Square subaperture Hartmann sensor lenslets. Actuators are located at the corners. Actuator centered Fried Geometry see picture. Detail on numbering and orientation can be found here KAON 368 . The actuator spacing is 7 mm at the DM corresponding to 0.200 mm at the lenslet array. 562.5 mm at the telescope primary mirror and 74.8 mm on the virtual pupil image formed by the telescope pupil.

WFS

Telemetry TRS

NIRC2 Parameters

Telescope Parameters

Links, KAONs, and other References

• Mauna Kea MASS DIMM Data Webpage
• NGWFC/RTC Algorithms KAON 517
• Centroid, Subaperture, & Actuator Conventions KAON 368
• Keck Telemetry Webpage

-- ChrisNeyman - 20 Aug 2010