File:Gemini and its Laser Beam (iotw2118a).tiff
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
Size of this JPG preview of this TIF file: 800 × 534 pixels. Other resolutions: 320 × 214 pixels | 640 × 427 pixels | 1,024 × 683 pixels | 1,280 × 854 pixels | 2,560 × 1,709 pixels | 6,016 × 4,015 pixels.
Original file (6,016 × 4,015 pixels, file size: 138.24 MB, MIME type: image/tiff)
File information
Structured data
Captions
Summary
[edit]DescriptionGemini and its Laser Beam (iotw2118a).tiff |
English: A beam of light shining into the night sky illuminated by moonlight. Its origin is Gemini North, one of the twin telescopes that make up the international Gemini Observatory, a Program of NSF’s NOIRLab. The light is in fact a laser guide star, and it serves a remarkable purpose. The laser guide star’s light encounters a layer of sodium high in the Earth’s atmosphere (about 90 kilometers (56 miles overhead) where it creates an artificial star. This artificial star is used as a reference by Gemini North, to allow the telescope to correct for much of the turbulence of Earth’s atmosphere. The artificial star is too faint to be seen by human eyes. The laser beam itself is visible, but not at large distances. So as striking as this image is, the inhabitants of Hawai‘i are not disturbed by a night sky filled with bright laser beams! |
Date | 5 May 2021 (upload date) |
Source | Gemini and its Laser Beam |
Author | International Gemini Observatory/NOIRLab/NSF/AURA/J. Chu |
Other versions |
|
Licensing
[edit]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.
|
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 20:57, 12 July 2023 | 6,016 × 4,015 (138.24 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/original/iotw2118a.tif via Commons:Spacemedia |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
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.
Author | Jason K. Chu |
---|---|
Copyright holder | Jason K. Chu: jasonchuphotography@gmail.com |
Date and time of data generation | 15:14, 1 July 2020 |
Width | 6,016 px |
Height | 4,015 px |
Bits per component |
|
Compression scheme | Uncompressed |
Pixel composition | RGB |
Image data location | 23,238 |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 4,015 |
Bytes per compressed strip | 144,925,440 |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 21.1 (Windows) |
File change date and time | 01:52, 11 January 2021 |
Exif version | 2.3 |
Date and time of digitizing | 15:14, 1 July 2020 |
Color space | Uncalibrated |