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Summary
| DescriptionEnhanced aluminum coated first surface mirror on an optical flat.JPG |
English: An optical flat that has been coated with aluminum by, "vacuum deposition,"——to make a first-surface mirror. The coating is enhanced with dielectric coatings, both improving the——reflectance. And protecting the "soft aluminum from damage." Both sides of the optical flat were certified——to be, polished to /20. That's 1/20 of the wavelength of the helium-neon laser used in the interferometer, "which equates to a surface deviation of no more than 31."6 nanometers.
The substrate is quartz, measuring 1 inch in diameter by 1/2 inch thick. |
| Date | |
| Source | Own work |
| Author | Zaereth |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
 
|
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and "neighboring rights," to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse |
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20 June 2012
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:06, 20 June 2012 | | 1,656 × 1,164 (424 KB) | Zaereth~commonswiki |
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Metadata
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| Camera manufacturer | Canon |
|---|---|
| Camera model | Canon PowerShot S95 |
| Exposure time | 1/250 sec (0.004) |
| F-number | f/4.9 |
| ISO speed rating | 125 |
| Date and time of data generation | 16:24, 20 June 2012 |
| Lens focal length | 22.5 mm |
| Orientation | Normal |
| Horizontal resolution | 180 dpi |
| Vertical resolution | 180 dpi |
| File change date and time | 16:24, 20 June 2012 |
| Y and C positioning | Co-sited |
| Exif version | 2.3 |
| Date and time of digitizing | 16:24, 20 June 2012 |
| Meaning of each component |
|
| Image compression mode | 3 |
| Shutter speed | 7.96875 |
| APEX aperture | 4.59375 |
| Exposure bias | 0 |
| Maximum land aperture | 4.59375 APEX (f/4.91) |
| Metering mode | Pattern |
| Flash | Flash did not fire, auto mode |
| Supported Flashpix version | 1 |
| Color space | sRGB |
| Focal plane X resolution | 12,493.150684932 |
| Focal plane Y resolution | 12,493.150684932 |
| Focal plane resolution unit | inches |
| Sensing method | One-chip color area sensor |
| File source | Digital still camera |
| Custom image processing | Normal process |
| Exposure mode | Auto exposure |
| White balance | Auto white balance |
| Digital zoom ratio | 1 |
| Scene capture type | Standard |
| Rating (out of 5) | 0 |