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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.07909 |
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| _version_ | 1866915285954461696 |
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| author | Hsieh, Yang-Peng Ngeow, Chow-Choong |
| author_facet | Hsieh, Yang-Peng Ngeow, Chow-Choong |
| contents | Lucky image (LI) is a technique to achieve near diffraction-limit high-angular resolution images for meter-class optical telescopes. In this work, by observing the core of globular cluster M15, we demonstrated the LI technique can be applied to a 1-meter telescope, the Lulin One-meter Telescope (LOT), together with a commercial-grade CMOS camera. We have also developed a method to sort the quality of the LI frames by measuring the mean intensity per pixel on the selected reference stars. For a LI-reconstructed image based on the best 10\%-selected frames, we achieved a $1.7\times$ improvement on the full-width at half-maximum over the conventional long-exposure image. When cross-matched the detected sources on the LI-reconstructed image to the Gaia Data Release 3 catalog, we obtained a mean difference of $-0.04\pm0.09$" and $-0.02\pm0.09$" on the right ascension and declination, respectively, as well as reaching to a $5σ$ depth of $\sim 17.9$ mag in the Gaia $G$-band. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_07909 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Commissioning of a Commercial CMOS Camera for the Application of Lucky Image Technique on the Lulin One-meter Telescope Hsieh, Yang-Peng Ngeow, Chow-Choong Instrumentation and Methods for Astrophysics Lucky image (LI) is a technique to achieve near diffraction-limit high-angular resolution images for meter-class optical telescopes. In this work, by observing the core of globular cluster M15, we demonstrated the LI technique can be applied to a 1-meter telescope, the Lulin One-meter Telescope (LOT), together with a commercial-grade CMOS camera. We have also developed a method to sort the quality of the LI frames by measuring the mean intensity per pixel on the selected reference stars. For a LI-reconstructed image based on the best 10\%-selected frames, we achieved a $1.7\times$ improvement on the full-width at half-maximum over the conventional long-exposure image. When cross-matched the detected sources on the LI-reconstructed image to the Gaia Data Release 3 catalog, we obtained a mean difference of $-0.04\pm0.09$" and $-0.02\pm0.09$" on the right ascension and declination, respectively, as well as reaching to a $5σ$ depth of $\sim 17.9$ mag in the Gaia $G$-band. |
| title | Commissioning of a Commercial CMOS Camera for the Application of Lucky Image Technique on the Lulin One-meter Telescope |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2505.07909 |