File:Gemini North “Cloaked” Dome (gemini-20030821gninvdomevertcrop).tiff
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Size of this JPG preview of this TIF file: 470 × 599 pixels. Other resolutions: 188 × 240 pixels | 377 × 480 pixels | 603 × 768 pixels | 803 × 1,024 pixels | 1,822 × 2,322 pixels.
Original file (1,822 × 2,322 pixels, file size: 6.07 MB, MIME type: image/tiff)
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Summary
[edit]DescriptionGemini North “Cloaked” Dome (gemini-20030821gninvdomevertcrop).tiff |
English: The dome of Gemini North almost vanishes in this magical image that utilizes a trick of photography to create the illusion. The “invisible” dome was made by taking a series of digital images of the Gemini North dome as it rotated with the shutter open. The images were then merged into a single frame to create the illusion of a half shell. The effect presents a fully unobstructed view of the 8-meter Gemini North telescope nestled on its altazimuth mount — a view that would be impossible to capture otherwise. Approximately 40 individual 5-second exposures were stacked to produce the transparent dome effect, and one additional one-minute exposure was obtained of the sky following the dome rotation. The sky itself is impressive, showing the hub of the Milky Way galaxy looming over the transparent dome. The stinger stars in the tail of the constellation Scorpius appear as two close and obvious stars near the center of the frame. Early Hawaiians knew the distinctive curve of stars in the tail of Scorpius as Māui’s Fishhook — the magic makau, or fishhook, that the demigod Māui used in his attempt to unite the Hawaiian islands. |
Date | 17 August 2004 (upload date) |
Source | Gemini North “Cloaked” Dome |
Author | International Gemini Observatory |
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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.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:21, 17 December 2023 | 1,822 × 2,322 (6.07 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/original/gemini-20030821gninvdomevertcrop.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 | NIKON CORPORATION |
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Camera model | NIKON D1X |
Author | Gemini Observatory |
Exposure time | 71/1 sec (71) |
F-number | f/2.8 |
Date and time of data generation | 20:39, 21 August 2003 |
Lens focal length | 14 mm |
Width | 1,822 px |
Height | 2,322 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 | 47 |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 21.1 (Windows) |
File change date and time | 22:20, 14 April 2020 |
Exposure Program | Manual |
Exif version | 2.1 |
Date and time of digitizing | 20:39, 21 August 2003 |
APEX shutter speed | −6.149747 |
APEX aperture | 2.970854 |
APEX exposure bias | 1.3333333333333 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Color space | Uncalibrated |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |