| DOI | Resolve DOI: https://doi.org/10.1117/12.2627979 |
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| Author | Search for: Chapin, Edward L.1; Search for: Dunn, Jennifer1; Search for: Hardy, Tim1; Search for: Hubner, Owen1; Search for: Lothrop, Jordan1 |
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| Affiliation | - National Research Council of Canada. Herzberg Astronomy and Astrophysics
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| Format | Text, Article |
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| Conference | X-Ray, Optical, and Infrared Detectors for Astronomy X, July 17-23, 2022, Montréal, Canada |
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| Subject | sensors; infrared telescopes; adaptive optics; imaging systems; cameras; infrared radiation; iris consortium; large telescopes |
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| Abstract | Future Extremely Large Telescopes (ELTs) will require advances in Adaptive Optics (AO) systems to fully realize their potential. In addition to separate, dedicated wavefront sensors, it is recognized that wavefront sensing within the science focal plane itself will also be needed for many new instruments. One approach is to use On-Detector Guide Windows (ODGWs), whereby a small sub-window of a science detector is read-out continuously (~10s-100s of Hz) in parallel with slower reads of the full chip (>10 s). Guide star centroids from these windows can be used to correct for vibrations and flexure. Another potential use for these windows is to perform localized resets at high cadence to prevent saturation and to minimize persistence from bright sources. We have prototyped an ODGW system using a 5-μm cutoff Teledyne HAWAII-2RG infrared detector, and the new Astronomical Research Cameras Gen-4 controller. We describe our implementation of an ODGW mode, and science image artifacts that were observed. |
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| Publication date | 2022-08-29 |
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| Publisher | SPIE |
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| In | |
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| Series | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 7b115935-4552-4a84-9cd2-3de8ccea701e |
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| Record created | 2024-01-26 |
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| Record modified | 2024-01-26 |
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