File:Gemini North LGS by moonlight (gemini1407b).tiff
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[edit]DescriptionGemini North LGS by moonlight (gemini1407b).tiff |
English: Nighttime image of the Gemini North Observatory, on the summit of Maunakea, during a Laser Guide Star (LGS) run, taken from the catwalk outside of the UH 2.2 meter telescope. LGS creates an “artificial star” which is used as a reference source for adaptive optics systems on Gemini instruments. The Canada-France-Hawaii Telescope (CFHT) is visible behind Gemini. This image was taken in preparation for two time-lapse movies which were recorded the following evening. |
Date | 16 September 2014 (upload date) |
Source | Gemini North LGS by moonlight |
Author | International Gemini Observatory |
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[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 | 16:57, 23 October 2023 | 2,500 × 1,667 (11.97 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/original/gemini1407b.tif via Commons:Spacemedia |
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Camera manufacturer | Canon |
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Camera model | Canon EOS-1Ds Mark II |
Author | Peter Michaud |
Exposure time | 23/1 sec (23) |
F-number | f/2.8 |
ISO speed rating | 800 |
Date and time of data generation | 22:23, 3 June 2009 |
Lens focal length | 14 mm |
Width | 2,500 px |
Height | 1,667 px |
Bits per component |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Image data location | 26,916 |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 1,667 |
Bytes per compressed strip | 12,502,500 |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop Lightroom |
File change date and time | 13:00, 9 July 2009 |
Exposure Program | Manual |
Exif version | 2.21 |
Date and time of digitizing | 22:23, 3 June 2009 |
APEX shutter speed | −4.523562 |
APEX aperture | 2.970854 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Focal plane X resolution | 3,526.7605633803 |
Focal plane Y resolution | 3,528.0423280423 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Manual white balance |
Scene capture type | Standard |