File:The Milky Way Across the Zenith (ann22042s).tiff
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[edit]DescriptionThe Milky Way Across the Zenith (ann22042s).tiff |
English: Image title: The Milky Way Across the Zenith Author: Kouij Ohnishi Country: JapanThis all-sky image shows our home galaxy, the Milky Way, crossing the zenith, the point just above the observer as seen from Nagano, Japan, in May 2019. Such images of the whole sky can be taken either with a fish-eye lens or with a convex mirror on the ground, the latter of which would show the photographer as well.Some of the brightest stars in the night sky can be seen in this image, as well as two of the giant planets of our Solar System: Jupiter, the brightest point in the bottom of this image, and Saturn, another bright point just to the opposite side of the Galaxy, to the bottom and next to the horizon.Directly right of the Milky Way and below Jupiter, we can spot the bright red star Antares, the primary star of the Japanese asterism of The Heart. Japanese constellations derive from ancient Chinese constellations, which were adopted with only slight or no changes. In this tradition, The Heart is the heart of the “Azure Dragon”, a super-constellation that represents the spring. In the Babylonian and Greco-Roman traditions, this area is considered the heart of the Scorpion. In Babylonian religion, the star is associated with Lisi, the child of the mother goddess, but in Greek mythology it is related to the planet Mars, because of its colour. The reddish colour also led to the star’s Chinese name “The Fire Star”. We know that this colour is caused by its relatively cool temperature.Going from Antares to the right of the image, we find the more northern parts of the sky. The bright star in the lower-right of the image, close to the horizon, is Arcturus, located in the modern constellation Boötes. While Antares and its surrounding area are considered the heart of the Azure Dragon, Arcturus and Spica (below the horizon) are two single-star asterisms forming its huge horn. Pointing towards it from above, at the right-hand edge of the image’s horizon, we can see the handle of the Big Dipper, or Plough, which is part of the constellation Ursa Major.The bright point to the right of the galaxy and just above the middle of the image is Vega, located in the modern constellation Lyra. Extending a line to the other side of the Galaxy and a bit lower in the image we can find Altair, in the constellation Aquila. From that point we extend another line to Deneb, the brightest star in the constellation of the Swan, also a bit higher in this image and completely flooded by the Milky Way. These three bright stars comprise the asterism known as the Summer Triangle in the northern hemisphere.Also see image in Zenodo: https://doi.org/10.5281/zenodo.7425196 |
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Date | 15 December 2022 (upload date) | ||
Source |
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Author | Kouij Ohnishi/IAU OAE | ||
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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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current | 23:04, 27 June 2023 | 4,480 × 4,480 (24.18 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://www.iau.org/static/archives/images/original/ann22042s.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 | Canon |
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Camera model | Canon EOS 5D Mark IV |
Author | Kouji Ohnishi |
Copyright holder | Kouji Ohnishi |
Exposure time | 60/1 sec (60) |
F-number | f/4 |
ISO speed rating | 6,400 |
Date and time of data generation | 02:58, 5 May 2019 |
Lens focal length | 8 mm |
Width | 4,480 px |
Height | 4,480 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 | 19 |
Horizontal resolution | 350 dpi |
Vertical resolution | 350 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 24.0 (Windows) |
File change date and time | 09:25, 1 December 2022 |
Exposure Program | 9 |
Exif version | 2.3 |
Date and time of digitizing | 02:58, 5 May 2019 |
Meaning of each component |
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APEX shutter speed | −2,147,483,648 |
APEX aperture | 4 |
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 | 5,719.1489361702 |
Focal plane Y resolution | 5,728.9002557545 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Manual white balance |
Scene capture type | Standard |