File:ELT mirror segment wrapped for delivery (eso2319a).tiff
Original file (4,000 × 3,000 pixels, file size: 14.25 MB, MIME type: image/tiff)
Captions
Summary
[edit]DescriptionELT mirror segment wrapped for delivery (eso2319a).tiff |
English: This image, taken at a storage facility near Poitiers, France, in December 2023, shows a segment of ESO’s Extremely Large Telescope main mirror, together with its support system, boxed and ready to start its 10 000 km long journey to Chile. Once there, the segments will be coated with a thin layer of reflective silver, and stored in preparation for installation on the telescope. Each segment is close to 1.5 metres across and 5 centimetres thick, and their surfaces have been polished to an accuracy of tens of nanometres — 10 000 times thinner than a human hair. The ELT’s 39-metre mirror will comprise 798 of these segments, plus 133 additional segments to facilitate recoating. |
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Date | 18 December 2023 (upload date) | ||
Source |
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Author | ESO/A. Centeio | ||
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Licensing
[edit]This media was created by the European Southern Observatory (ESO).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public ESO website, along with the texts of press releases, announcements, pictures of the week, blog posts 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
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:17, 19 December 2023 | 4,000 × 3,000 (14.25 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://cdn.eso.org/images/original/eso2319a.tif via Commons:Spacemedia |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | OPPO |
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Camera model | OPPO A72 |
Exposure time | 1/33 sec (0.03030303030303) |
F-number | f/1.7 |
ISO speed rating | 105 |
Date and time of data generation | 09:58, 7 December 2023 |
Lens focal length | 4.71 mm |
Width | 4,000 px |
Height | 3,000 px |
Bits per component |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 21 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 23.3 (Macintosh) |
File change date and time | 14:04, 13 December 2023 |
Exposure Program | Not defined |
Exif version | 0.02 |
Date and time of digitizing | 09:58, 7 December 2023 |
Meaning of each component |
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APEX shutter speed | 5.059 |
APEX aperture | 1.53 |
APEX exposure bias | 0 |
Maximum land aperture | 1.53 APEX (f/1.7) |
Metering mode | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 0.01 |
Color space | Uncalibrated |
Sensing method | 0 |
Scene type | 0 |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Focal length in 35 mm film | 0 mm |
Scene capture type | Standard |