File:100 Hours of Astronomy- Observing the sky (iau0904a).tiff
Original file (3,504 × 2,336 pixels, file size: 23.44 MB, MIME type: image/tiff)
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Summary[edit]
Description100 Hours of Astronomy- Observing the sky (iau0904a).tiff |
English: For 4 days, from 2 to 5 April 2009, amateur astronomers, professional astronomers, educators and people all around the world will share the experience of observing the sky. In this picture amateur astronomers are preparing their equipment for a night of astronomical discoveries. |
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Date | 10 February 2009, 17:07 (upload date) | ||
Source |
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Author | TWAN/Babak Tafreshi | ||
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Licensing[edit]
This media was created by the International Astronomical Union (IAU).
Their website states: "The images, videos and web texts on iau.org are released under the Creative Commons Attribution 4.0 International License and may on a non-exclusive basis be reproduced without fee, on the conditions outlined below." Conditions:
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This file is licensed under the Creative Commons Attribution 4.0 International license.
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:39, 28 June 2023 | 3,504 × 2,336 (23.44 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://www.iau.org/static/archives/images/original/iau0904a.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.
Image title | For 4 days, from 2 to 5 April 2009, amateur astronomers, professional astronomers, educators and people all around the world will share the experience of observing the sky. In this picture amateur astronomers are preparing their equipment for a night of astronomical discoveries. |
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Camera manufacturer | Canon |
Camera model | Canon EOS 20D |
Exposure time | 6/1 sec (6) |
F-number | f/6.3 |
ISO speed rating | 800 |
Date and time of data generation | 18:21, 28 October 2007 |
Lens focal length | 15 mm |
Width | 3,504 px |
Height | 2,336 px |
Bits per component |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Image data location | 25,662 |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 2,336 |
Bytes per compressed strip | 24,556,032 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 01:13, 3 January 2008 |
Exposure Program | Manual |
Exif version | 2.21 |
Date and time of digitizing | 01:13, 3 January 2008 |
Meaning of each component |
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APEX shutter speed | −2.5849456787109 |
APEX aperture | 5.3106994628906 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 3,959.3220338983 |
Focal plane Y resolution | 3,959.3220338983 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Manual white balance |
Scene capture type | Standard |