File:Cloudy Sunset at CTIO (iotw2134a).tiff
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editDescriptionCloudy Sunset at CTIO (iotw2134a).tiff |
English: A rare richly colored sunset sky is the backdrop to this image of Cerro Tololo Inter-American Observatory (CTIO), a Program of NSF’s NOIRLab. While clouds can make for a spectacular sunset, water vapor in the atmosphere also impacts astronomical observations by absorbing starlight. Astronomers and engineers have developed a suite of instruments to measure its impacts. One such instrument is housed in the small clamshell dome in the foreground of this image: the aTmCam (Atmospheric Transmission Monitoring Camera) is a new calibration system that lets astronomers measure how much light is passing through the atmosphere.aTmCam isn’t the only instrument designed to measure the atmosphere at CTIO. The tall metal frame with a canvas dome in the background at the left belongs to the DIMM2 Seeing Monitor. This automatic instrument helps astronomers measure “seeing” — how affected the astronomical observations are by the blurring effects of turbulence in the atmosphere. |
Date | 25 August 2021 (upload date) |
Source | Cloudy Sunset at CTIO |
Author | CTIO/NOIRLab/NSF/AURA/B. Tafreshi |
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editThis 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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current | 15:16, 16 July 2023 | 10,850 × 6,598 (409.68 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/original/iotw2134a.tif via Commons:Spacemedia |
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Exposure time | 1/60 sec (0.016666666666667) |
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ISO speed rating | 200 |
Date and time of data generation | 22:27, 17 July 2015 |
Lens focal length | 70 mm |
Width | 10,850 px |
Height | 6,598 px |
Bits per component |
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Pixel composition | RGB |
Image data location | 43,416 |
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Bytes per compressed strip | 429,529,800 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 22.4 (Windows) |
File change date and time | 18:50, 22 June 2021 |
Exposure Program | Manual |
Exif version | 2.31 |
Date and time of digitizing | 22:27, 17 July 2015 |
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File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Manual white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 70 mm |
Scene capture type | Standard |
Scene control | None |
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