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Daytime AO work on 5 June 2011

Observer(s): L Busoni, A. Puglisi, S. Esposito, E. Pinna (Arcetri), G. Brusa (LBTO)

Telescope Operator:

SW Support:

Telescope Support: M. Midkiff

Instrument Support:

Summary

The retro-reflector was installed early in the morning and measurements of slope null vectors were performed for most of the day. In particular: a) with BIN1 and 400 corrected modes (i.e. bright reference star and high SR) measurements in the narrow bands of FeII (1.64um) and H2 (2.12um) and the the Ks band. All at the instrument rotation angle of 163 degrees. b) with BIN2 in the narrow bands of FeII and H2. The amount of equivalent wavefront correction is found to be small but not negligible in the high SR regime (70-80%). Given the very small SR improvement at BIN2 it was decided that there was no need to test higher binnings. The image in H-band was tested again and found to have the peculiar and not understood features found the day before, i.e. a small 'dip' in the central diffraction core. In the evening the retro-reflector was left on the telescope since the DX side was not used for observations during the night.

-- GuidoBrusa - 07 Jun 2011
Topic revision: r3 - 07 Jun 2011, GBrusa
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