File:Coded aperture mask (for gamma camera).jpg

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Description
Date
Source self-made (Scanned on Epson Perfection 1270)
Author none (contains no original authorship)
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This image is in the public domain because it is a mere mechanical scan or photocopy of a public domain original, or – from the available evidence – is so similar to such a scan or photocopy that no copyright protection can be expected to arise. The original itself is in the public domain for the following reason:
This work is ineligible for copyright and therefore in the public domain because it consists entirely of information that is common property and contains no original authorship.

This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as when the enhancements are clear but insufficient. For known raw unenhanced scans you can use an appropriate {{PD-old}} tag instead. For usage, see Commons:When to use the PD-scan tag.


Note: This tag applies to scans and photocopies only. For photographs of public domain originals taken from afar, {{PD-Art}} may be applicable. See Commons:When to use the PD-Art tag.

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Date/TimeThumbnailDimensionsUserComment
current10:52, 4 April 2012Thumbnail for version as of 10:52, 4 April 2012700 × 700 (153 KB)Alex Spade (talk | contribs){{Information |Description={{en|Coded aperture mask for gamma camera (for SPECT)}} |Source=self-made (Scanned on Epson Perfection 1270) |Date=2012-04-04 |Author= Potapov Dmitry |Pe...

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