File:Blank Canvas the ELT’s M2 Mirror Blank.tif
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![File:Blank Canvas the ELT’s M2 Mirror Blank.tif](https://upload.wikimedia.org/wikipedia/commons/thumb/5/53/Blank_Canvas_the_ELT%E2%80%99s_M2_Mirror_Blank.tif/lossy-page1-799px-Blank_Canvas_the_ELT%E2%80%99s_M2_Mirror_Blank.tif.jpg?20190116101529)
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[edit]DescriptionBlank Canvas the ELT’s M2 Mirror Blank.tif |
English: This image shows the massive 3-ton blank for the ELT’s secondary mirror. This technological blank has been successfully machined from a slab of the low-expansion ceramic material ZERODURⓇ into its near-final form by the German company SCHOTT.
M2 will be the largest ever secondary mirror employed on a telescope, as well as the largest convex mirror ever produced. Fabricating this highly convex, aspherical mirror is a considerable challenge — and the result will be a truly remarkable example of pioneering optical engineering. The secondary mirror and its support system — weighing 12 tonnes — will hang upside-down high above the 39-metre primary mirror. |
Date | |
Source | https://www.eso.org/public/images/ann19003a/ |
Author | SCHOTT |
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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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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 10:15, 16 January 2019 | ![]() | 2,362 × 1,772 (5.83 MB) | Jmencisom (talk | contribs) | User created page with UploadWizard |
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Copyright holder | Hasselblad H6D |
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Width | 2,362 px |
Height | 1,772 px |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 36 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CC (Windows) |
File change date and time | 16:21, 15 January 2019 |
Exif version | 2.21 |
Color space | sRGB |
warning | identify: Incompatible type for "RichTIFFIPTC"; tag ignored. `TIFFFetchNormalTag' @ warning/tiff.c/TIFFWarnings/912. |