NASA’s Mars Pathfinder mission landed on the Red Planet on July 4, 1997. It’s tiny rover, named Sojourner after abolitionist Sojourner Truth, spent 83 days of a planned seven-day mission exploring the Martian terrain, acquiring images, and taking chemical, atmospheric and other measurements. When the Mars Pathfinder spacecraft approached its destination, no NASA mission had successfully reached Mars in more than 20 years.The final data transmission received from Pathfinder was at 10:23 UTC on September 27, 1997.

This image shows the Twin Peaks, which are modest-size hills to the southwest of the Mars Pathfinder landing site. They were discovered on the first panoramas taken by the IMP camera on the July 4, and subsequently identified in Viking Orbiter images taken more than 20 years before. The peaks are approximately 100 feet tall (30-35 meters). North Twin is approximately 860 meters (2800 feet) from the lander, and South Twin is about a kilometer away (3300 feet). The scene includes bouldery ridges and swales or “hummocks” of flood debris that range from a few tens of meters away from the lander to the distance of the South Twin Peak.

The composite color frames that make up this “right-eye” image consist of seven frames, taken with different color filters that were enlarged by 500 percent and then co-added using Adobe Photoshop to produce, in effect, a super-resolution panchromatic frame that is sharper than an individual frame would be. This panchromatic frame was then colorized with the red, green, and blue filtered images from the same sequence. The color balance was adjusted to approximate the true color of Mars.

Learn more: Why No One Under 20 Has Experienced a Day Without NASA at Mars

Image Credit: NASA/JPL



组成这张“右眼”图像的复合颜色框架由7个框架组成,使用不同的颜色滤镜拍摄,放大500%,然后使用Adobe Photoshop共同添加,产生了一个超分辨率的全色框架,比单个框架更清晰。这幅全色的画面然后用来自同一序列的红、绿、蓝滤过的图像着色。颜色平衡被调整到接近火星的真实颜色。



4.1 7 投票数
0 评论