File:Turning BepiColombo’s high-gain antenna ESA413096.gif
原始文件 (1,024 × 1,024像素,文件大小:488 KB,MIME类型:image/gif、循环、4帧、0.8秒)
说明
摘要
[编辑]描述Turning BepiColombo’s high-gain antenna ESA413096.gif |
English: Usually only the backside of BepiColombo’s high-gain antenna – which is attached to the Mercury Planetary Orbiter – is visible to one of the Mercury Transfer Module’sonboard monitoring cameras, but during a special set of movements to check the antenna’s pointing mechanism, rare views of the front side were captured.
In the last week of November, following a reconfiguration of the antenna pointing mechanism, a 2.8 degree pointing error of the antenna was noticed. After careful investigation, the anomaly was traced back to a setting in the antenna pointing mechanism electronics, which has subsequently been rectified. Investigating the issue required a range of special movements, which allowed one of the monitoring cameras to capture the first in-flight images of the front side of the antenna as its orientation changed. Given the spacecraft’s current orbit and orientation,only the backside of this antenna is visiblewhen it is pointing towards Earth. During the investigation, themedium gain antennawas used for communications with the Earth, but as of 30 November, communications moved back to the high-gain antenna again. The images were captured by M-CAM 3 on 27, 28 and 29 November 2018, so the gif sequence shown here covers several days. The images show the main reflector dish, with the three struts holding the sub-reflector and the antenna feed at the centre of the main reflector dish clearly visible. The side of the Mercury Planetary Orbiter with the low-gain antenna, which protrudes from the side of the module, is also visible, together with some detail of the spacecraft’s multi-layered insulation. Two of the images combine two pictures with different exposure times to account for the different brightness levels of different parts of the spacecraft. BepiColombo is a joint endeavour between ESA and the Japan Aerospace Exploration Agency, JAXA. It is the first European mission to Mercury, the smallest and least explored planet in the inner Solar System, and the first to send two spacecraft to make complementary measurements of the planet and its dynamic environment at the same time. |
日期 | |
来源 | http://www.esa.int/spaceinimages/Images/2018/12/Turning_BepiColombo_s_high-gain_antenna |
作者 | European Space Agency |
授权 (二次使用本文件) |
ESA/BepiColombo/MTM ,CC BY-SA 3.0 IGO |
Title InfoField | Turning BepiColombo’s high-gain antenna |
Mission InfoField | BepiColombo |
Activity InfoField | Space Science |
许可协议
[编辑]- 您可以自由地:
- 共享 – 复制、发行并传播本作品
- 修改 – 改编作品
- 惟须遵守下列条件:
- 署名 – 您必须对作品进行署名,提供授权条款的链接,并说明是否对原始内容进行了更改。您可以用任何合理的方式来署名,但不得以任何方式表明许可人认可您或您的使用。
- 相同方式共享 – 如果您再混合、转换或者基于本作品进行创作,您必须以与原先许可协议相同或相兼容的许可协议分发您贡献的作品。
文件历史
点击某个日期/时间查看对应时刻的文件。
日期/时间 | 缩略图 | 大小 | 用户 | 备注 | |
---|---|---|---|---|---|
当前 | 2019年4月3日 (三) 13:10 | 1,024 × 1,024(488 KB) | Fæ(留言 | 贡献) | European Space Agency, Id 413096, http://www.esa.int/spaceinimages/Images/2018/12/Turning_BepiColombo_s_high-gain_antenna, User:Fæ/Project_list/ESA |
您不可以覆盖此文件。
文件用途
没有页面使用本文件。
全域文件用途
以下其他wiki使用此文件:
- zh.wikipedia.org上的用途
元数据
此文件含有额外信息,这些信息可能是创建或数字化该文件时使用的数码相机或扫描仪所添加的。如果文件已从其原始状态修改,某些详细信息可能无法完全反映修改后的文件。
GIF文件备注 | Created with ezgif.com GIF maker |
---|