維基百科

File:Mars Viking 12a240.png

原始檔案 （999 × 512 像素，檔案大小：188 KB，MIME 類型：image/png）

摘要

描述 Viking 1 lander image of a martian sunset over Chryse Planitia. In this image the sun is 2 degrees below the local horizon. The banding in the sky is an artifact produced by the incremental brightness levels of the camera. This image was taken on the 30th martian day (sol) after touchdown, at 19:13 local time (10:40:31 on 20 August 1976 (UTC)). The camera is pointing towards the southwest.
日期 2009-01-24; original photos were taken 1976-08-20.
來源 Own work based on images in the NASA Viking image archive
作者 "Roel van der Hoorn (Van der Hoorn)"
授權許可
(重用此檔案)		 I used the original 12a240.blu, 12a240.grn and 12a240.red images from the NASA Viking image archive, converted them to .png, manually removed the noise, merged them into one image (almost matching true color; see here for the channel mixing process) and finally increased the brightness with 35. Except for the conversion, this was done in Adobe Photoshop CS2. The original file by NASA is in the public domain, and so is this new one.
其他版本 I created this image as a replacement for the image Viking sunset.jpg (see also here). This file was created by NASA, but the quality was not very high. Using the original pictures from the Lander archive resulted in a higher quality image.

授權條款

Public domain 此作品已由其作者，英文維基百科的Van der Hoorn，釋出至公有領域。此授權條款在全世界均適用。
這可能在某些國家不合法，如果是的話：
Van der Hoorn授予任何人有權利使用此作品於任何用途，除受法律約束外，不受任何限制。

The image is based on an original image from NASA to which the following copyright statement is applicable:

Public domain 本作品由NASA創作，屬於公有領域。根據NASA的版權政策：“NASA的創作除非另有聲明否則不受版權保護。”（參見：Template:PD-USGov/zh，NASA版權政策或JPL圖像使用政策）
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目前2009年1月24日 (六) 16:44於 2009年1月24日 (六) 16:44 版本的縮圖999 × 512（188 KB）Van der Hoorn== Summary == {{Information |Description = Viking 1 lander image of a martian sunset over Chryse Planitia. In this image the sun is 2 degrees below the local horizon. The banding in the sky is an artifact produced by the incremental brightness levels of t

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