File:LSST Camera (52474001505).jpg
Original file (3,762 × 2,559 pixels, file size: 3.82 MB, MIME type: image/jpeg)
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Summary
[edit]DescriptionLSST Camera (52474001505).jpg |
English: I went to SLAC to see the camera from the Simonyi LSST before it ships out to Chile with some astronaut friends who are keen to mine the torrent of data to find the asteroids that might impact Earth in the future. When it comes online in 2024, it will have two dedicated submarine fiber lines bringing the data feed back to SLAC.
With a 3.2 gixapixel CCD sensor array cooled to -100° C and a quick carbon fiber shutter, it captures an exceptional field of view in a single shot (equal to 7 full moons across). Each exposure is 15 seconds, and it takes 2 seconds to read out the data and mux it onto a fiber. It will take a survey of 40 billion objects, a census of galaxies and their spatial distribution. We will see the weak gravitational lensing effect of dark matter. And we can track near earth objects and the asteroids’ trajectories back to their formation origin. It has 200 4K*4K pixel sensors, costing $100k each (yes, a $20M imager in a $168M camera). I was at SLAC 11 years ago as they were pitching this camera, and it is true to the original specs. Back then, the generation of 20TB/night was, well, astronomical. With the subsequent turns of Moore’s Law, that is already exceeded by the Planet Labs network of telescopes. |
Date | |
Source | https://www.flickr.com/photos/jurvetson/52474001505/ |
Author | Steve Jurvetson |
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This image was originally posted to Flickr by jurvetson at https://flickr.com/photos/44124348109@N01/52474001505. It was reviewed on 5 November 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
5 November 2022
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 05:24, 5 November 2022 | 3,762 × 2,559 (3.82 MB) | Sv1xv (talk | contribs) | Uploaded a work by Steve Jurvetson from https://www.flickr.com/photos/jurvetson/52474001505/ with UploadWizard |
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Metadata
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Camera manufacturer | Apple |
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Camera model | iPhone 12 Pro Max |
Exposure time | 1/120 sec (0.0083333333333333) |
F-number | f/1.6 |
ISO speed rating | 100 |
Date and time of data generation | 15:22, 1 November 2022 |
Lens focal length | 5.1 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | 16.0.2 |
File change date and time | 15:22, 1 November 2022 |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.32 |
Date and time of digitizing | 15:22, 1 November 2022 |
Meaning of each component |
|
APEX shutter speed | 6.9059098962288 |
APEX aperture | 1.3561438092556 |
APEX brightness | 4.0068600710803 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTimeOriginal subseconds | 553 |
DateTimeDigitized subseconds | 553 |
Supported Flashpix version | 1 |
Color space | Uncalibrated |
Sensing method | One-chip color area sensor |
Scene type | A directly photographed image |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1.0100200400802 |
Focal length in 35 mm film | 26 mm |
Scene capture type | Standard |