File:Seeing Stars (iotw2143a).tiff
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
![File:Seeing Stars (iotw2143a).tiff](https://upload.wikimedia.org/wikipedia/commons/thumb/4/4b/Seeing_Stars_%28iotw2143a%29.tiff/lossy-page1-800px-Seeing_Stars_%28iotw2143a%29.tiff.jpg?20230729084321)
Size of this JPG preview of this TIF file: 800 × 531 pixels. Other resolutions: 320 × 213 pixels | 640 × 425 pixels | 1,024 × 680 pixels | 1,280 × 850 pixels | 2,560 × 1,700 pixels | 4,288 × 2,848 pixels.
Original file (4,288 × 2,848 pixels, file size: 28.67 MB, MIME type: image/tiff)
File information
Structured data
Captions
Captions
This photo might make you feel a little giddy, as though the sky is swirling around you.
Summary
[edit]DescriptionSeeing Stars (iotw2143a).tiff |
English: This photo might make you feel a little giddy, as though the sky is swirling around you. Gemini North — one of the two telescopes that make up the international Gemini Observatory, a Program of NSF’s NOIRLab — almost looks like a lighthouse, beaming bright light into a starry whirlpool. The effect, however, is not due to a single dynamic moment, but to the photographer’s using a long exposure to capture the apparent movement of the stars across the night sky.The term “apparent movement” is appropriate, because of course the stars are not really sweeping across space in a uniform movement. Rather, the Earth’s rotation makes it appear that they do. The beam of light being emitted by Gemini North is also, in reality, not nearly so broad. It is actually an extremely narrow beam of light known as a laser guide star. The telescope uses the laser guide star to assess how much atmospheric turbulence is distorting the light which reaches the Earth from objects in space. |
Date | 27 October 2021 (upload date) |
Source | Seeing Stars |
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 | 08:43, 29 July 2023 | ![]() | 4,288 × 2,848 (28.67 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/original/iotw2143a.tif via Commons:Spacemedia |
You cannot overwrite this file.
File usage on Commons
The following page uses 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.
Camera manufacturer | NIKON CORPORATION |
---|---|
Camera model | NIKON D5000 |
Author | Jason K. Chu |
Copyright holder | Jason K. Chu: jasonchuphotography@gmail.com |
Exposure time | 30/1 sec (30) |
F-number | f/2.8 |
ISO speed rating | 6,400 |
Date and time of data generation | 15:14, 1 July 2020 |
Lens focal length | 17 mm |
Width | 4,288 px |
Height | 2,848 px |
Bits per component |
|
Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 20 |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 21.1 (Windows) |
File change date and time | 02:33, 21 January 2021 |
Exposure Program | Manual |
Exif version | 2.3 |
Date and time of digitizing | 15:14, 1 July 2020 |
APEX shutter speed | −4.906891 |
APEX aperture | 2.970854 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | White fluorescent (WW 3200 – 3700K) |
Flash | Flash did not fire |
Color space | Uncalibrated |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Manual white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 25 mm |
Scene capture type | Standard |
Scene control | High gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |