Gemini South Adaptive Optics Imager
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Transcript of Gemini South Adaptive Optics Imager
Gemini South Adaptive Optics Imager
Peter McGregor
Research School of Astronomy & Astrophysics
The Australian National University
GSAOI Status
Under construction at Mt. Stromlo Obs., ANU Completed “zeroeth” cool down for thermal tests First cool down with mechanisms in July 2004 One science detector and two eng. detectors Shipment scheduled for October 2005 Commissioning January 2006 (after MCAO-1)
GSAOI Specifications
Used with MCAO system Field-of-view: 8585 Spatial pixel size: 0.020.02 Broad band filters: Z, J, H, Ks, K', K Narrow band filters: 1.5% wide zero-
redshift emission-line filters Narrow band Lyα filters at J? Four HAWAII-2RG detectors
• 4080×4080 pixels
GSAOI Performance
Z J H K
Time (s) 3600 3600 3600 3600SNR 10 10 10 10Aperture (") 0.08 0.08 0.08 0.08Seeing (") 0.4 0.4 0.4 0.4Strehl 0.2 0.2 0.4 0.6Magnitude (star) 25.6 24.1 24.1 23.7ODGW (10 ms) 15.1 14.2 14.5 13.5ODGW (30 s) 22.7 21.2 21.0 20.2
http://www
.mso.anu.e
du.au/gsao
i