Open Access
Table 2
Performances of the four modes of GPAO and of the former MACAO and CIAO systems.
| AO | Strehla K-band | Bright [mag] | Faintb [mag] | Filter |
|---|---|---|---|---|
| MACAO | 40% | 9 | 13 | V |
| NGS_VIS | 75% | 8 | 12 | GRP |
| LGS_VIS(c) | 60% | 13 | 17 | GRP |
| CIAO | 40% | 9 | 12 | K |
| NGS_IR | 40% | 9 | 12 | K |
| LGS_IR(c) | 60% | 9 | 12 | K |
Notes. (a)Strehl obtained under nominal weather conditions on a bright target. (b)Operational limit with reduced performances. (c)The performances of the LGS modes are preliminary and have been only roughly verified on sky.
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