File:The Circle of Light.jpg
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Summary
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English: Reality seems to be reversed in this striking Image of the Week. It appears as though the telescopes of the Cerro Tololo Inter-American Observatory (CTIO), a Program of NSF’s NOIRLab, are growing around the edge of a deep well of stars — or alternatively, as though the night sky is being reflected exceptionally crisply in a perfectly circular pool. This mind-bending effect is achieved by using a specialized camera lens called a fisheye. Fisheye lenses have a bulbous shape, which enables them to capture hemispherical images, but also causes the image to be significantly distorted — something that conventional lenses are designed to avoid. However, that distortion can be used to create striking effects such as the wraparound effect in this image, where the ground appears to have been scooped into a circle. Several of the telescopes housed at CTIO are visible around the edge of this image, including (clockwise from the top): the SMARTS 0.9-meter Telescope, the SMARTS 1.5-meter Telescope, the Víctor M. Blanco 4-meter Telescope, the Curtis Schmidt Telescope, the SMARTS 1.0-meter Telescope and the decommissioned DIMM1 Seeing Monitor.
Español: La realidad parece cambiar de perspectiva en esta impactante Imagen de la Semana. Parece que los telescopios del Observatorio Cerro Tololo (CTIO), un Programa de NOIRLab de NSF, estuvieran creciendo alrededor del borde de un profundo pozo de estrellas o como si el cielo nocturno se reflejara con gran nitidez en una piscina perfectamente circular. Este efecto alucinante se logra utilizando un lente de cámara especializado llamado ojo de pez. Los lentes ojo de pez tienen una forma curva, lo que les permite capturar imágenes hemisféricas, pero también producen una fuerte distorsión en la imagen, algo que los lentes convencionales, por diseño, no hacen. Sin embargo, esta distorsión puede utilizarse para crear efectos sorprendentes, como el efecto envolvente de esta imagen, en la que el suelo parece haber sido transportado a un círculo. En el borde de esta imagen pueden verse varios de los telescopios que se encuentran en CTIO, entre ellos (desde la parte superior, en el sentido de las agujas del reloj): el Telescopio SMARTS de 0,9 metros, el Telescopio SMARTS de 1,5 metros, el Telescopio de 4 metros Víctor M. Blanco, el Telescopio Curtis Schmidt, el Telescopio SMARTS de 1,0 metro y el Monitor Seeing DIMM1, ya retirado de servicio. |
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| Source | https://noirlab.edu/public/images/iotw2209a/ |
| Author | CTIO/NOIRLab/NSF/AURA/B. Tafreshi |
Licensing
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This media was created by the National Optical-Infrared Astronomy Research Laboratory (NOIRLab).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public NOIRLab website, along with the texts of press releases, announcements, images of the week and captions; are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible." To the uploader: You must provide a link (URL) to the original file and the authorship information if available. |
  This file is licensed under the Creative Commons Attribution 4.0 International license.
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File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 18:02, 22 June 2023 | | 10,182 × 10,184 (25.13 MB) | C messier | full size |
| 20:18, 30 January 2023 |  | 1,280 × 1,280 (346 KB) | Yiseth Romero | Uploaded a work by CTIO/NOIRLab/NSF/AURA/B. Tafreshi from https://noirlab.edu/public/images/iotw2209a/ with UploadWizard |
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