Unveiling the nature of the Gemini multiconjugate adaptive optics system distortions
arXiv:1902.10449 · doi:10.1093/mnras/stz596
Abstract
Astrometry was not a science case of the Gemini Multiconjugate adaptive optics System (GeMS) at its design stage. However, since GeMS has been in regular science operation with the Gemini South Adaptive Optics Imager (GSAOI), their astrometric performances have been deeply analysed. The non-linear component of the distortion map model shows a characteristic pattern which is similarly repeated in each detector of GSAOI. The nature of this pattern was unknown and subjected to different hypotheses. This paper describes the origin of the GeMS distortion pattern as well as its multi-epoch variation. At the end, it is showed a comparison with the current design of the Multiconjugate Adaptive Optics RelaY (MAORY) of the Extremely Large Telescope (ELT).
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Cited by in corpus (5)
- Towards Realistic Modeling of the Astrometric Capabilities of MCAO Systems: Detecting an Intermediate Mass Black Hole with MAVIS
- Optimal Differential Astrometry for Multiconjugate Adaptive Optics. I. Astrometric Distortion Mapping using On-sky GeMS Observations of NGC 6723
- The impact of geometric distortions in multiconjugate adaptive optics astrometric observations with future extremely large telescopes
- Using Gaia DR2 to make a systematic comparison between two geometric distortion solutions
- Simulating the optical alignment of the multiconjugate adaptive optics module for the extremely large telescope