File:Chwichiya-002.jpg
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DescriptionChwichiya-002.jpg |
English: Endcut of Chwichiya 002, a rare C3.00-ungrouped, and potentially CT3 as it is a member of the recently proposed CT Group. The MetBull describes it as having a “dark porous interior with chondrules” larger than those in CM2 and “this meteorite appears to be less heated than the least heated type 3 ordinary chondrite” which I take to mean it is the least metamorphosed of the chondrites, primitive and pristine. It has not undergone aqueous alteration or heating before its expulsion from the parent body.
So, I decided to take some macro zoom shots of the little fella, just 5g. With a Canon 5D Mark IV, I used the 100mm Macro Zoom lens, which is much easier for a quick shot vs. the 65mm 1-5x Macro lens. The later requires tripod and substantial added lighting whereas these shots were hand-held in ambient light, thanks to the image-stabilizing lens. Chwichiya was discovered in Morocco in 2018 in the Western Sahara near the village of Haouza in a concentration area called Chwichiya. Research: • Univ of Arizona discovered two areas with isotopic anomalies (probably organic) on a sample in NanoSIMS images, as well as six potential presolar grains. •Analyses conducted by Aix Marseille Univ and others in France indicate a possible relationship between Chwichiya 002 and the samples returned from Ryugu by Hayabusa2, and the ones that will be returned from Bennu by OSIRIS-REx in 2023. • Proposal to form a new CT Group and discussion. |
Date | |
Source | https://www.flickr.com/photos/jurvetson/52281559471/ |
Author | Steve Jurvetson |
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This image was originally posted to Flickr by jurvetson at https://flickr.com/photos/44124348109@N01/52281559471. It was reviewed on 13 August 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
13 August 2022
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 00:29, 13 August 2022 | 4,672 × 4,365 (5.11 MB) | Sv1xv (talk | contribs) | Uploaded a work by Steve Jurvetson from https://www.flickr.com/photos/jurvetson/52281559471/ with UploadWizard |
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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 |
Exposure time | 1/125 sec (0.008) |
F-number | f/4 |
ISO speed rating | 8,000 |
Date and time of data generation | 15:15, 7 August 2022 |
Lens focal length | 100 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 15:15, 7 August 2022 |
Y and C positioning | Centered |
Exposure Program | Aperture priority |
Exif version | 2.3 |
Date and time of digitizing | 15:15, 7 August 2022 |
Meaning of each component |
|
APEX shutter speed | 7 |
APEX aperture | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 2.8284271210653 APEX (f/2.67) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 000 |
DateTimeOriginal subseconds | 000 |
DateTimeDigitized subseconds | 000 |
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 | Auto white balance |
Scene capture type | Standard |
Lens used | Canon EF 100mm f/2.8L Macro IS USM |
Rating (out of 5) | 0 |
IIM version | 2 |