TE
科技回声
首页24小时热榜最新最佳问答展示工作
GitHubTwitter
首页

科技回声

基于 Next.js 构建的科技新闻平台,提供全球科技新闻和讨论内容。

GitHubTwitter

首页

首页最新最佳问答展示工作

资源链接

HackerNews API原版 HackerNewsNext.js

© 2025 科技回声. 版权所有。

Sky-scanning complete for Gaia

177 点作者 sohkamyung4 个月前

12 条评论

NKosmatos4 个月前
Direct link to some very very nice images and animations: <a href="https:&#x2F;&#x2F;www.esa.int&#x2F;Science_Exploration&#x2F;Space_Science&#x2F;Gaia" rel="nofollow">https:&#x2F;&#x2F;www.esa.int&#x2F;Science_Exploration&#x2F;Space_Science&#x2F;Gaia</a><p>Two of my favorites: <a href="https:&#x2F;&#x2F;www.esa.int&#x2F;ESA_Multimedia&#x2F;Images&#x2F;2025&#x2F;The_best_Milky_Way_map_by_Gaia" rel="nofollow">https:&#x2F;&#x2F;www.esa.int&#x2F;ESA_Multimedia&#x2F;Images&#x2F;2025&#x2F;The_best_Milk...</a><p><a href="https:&#x2F;&#x2F;www.esa.int&#x2F;ESA_Multimedia&#x2F;Images&#x2F;2025&#x2F;01&#x2F;The_best_Milky_Way_map_by_Gaia_edge-on" rel="nofollow">https:&#x2F;&#x2F;www.esa.int&#x2F;ESA_Multimedia&#x2F;Images&#x2F;2025&#x2F;01&#x2F;The_best_M...</a>
评论 #42712440 未加载
lysace4 个月前
Gaia has a <i>1.0 × 0.5 m focal plane array on which light from both telescopes is projected. This in turn consists of 106 CCDs of 4500 × 1966 pixels each, for a total of 937.8 megapixels.</i><p>Neat.
评论 #42713830 未加载
评论 #42719238 未加载
marcodiego4 个月前
IIRC Gaia had a performance degradation because of stray light, probably ice on the border of it&#x27;s aperture[1].<p>How has that affected this result?<p>[1] <a href="https:&#x2F;&#x2F;blogs.esa.int&#x2F;gaia&#x2F;2014&#x2F;06&#x2F;16&#x2F;preliminary-analysis-of-stray-light-impact-and-strategies&#x2F;" rel="nofollow">https:&#x2F;&#x2F;blogs.esa.int&#x2F;gaia&#x2F;2014&#x2F;06&#x2F;16&#x2F;preliminary-analysis-o...</a>
评论 #42716311 未加载
boxed4 个月前
I wonder if it could keep giving us useful data without the precision rotation? Intuitively it seems like we should be able to figure out where it&#x27;s pointing by star-matching plus dead reckoning based on the last frame.
评论 #42710763 未加载
评论 #42718780 未加载
评论 #42713993 未加载
mrbluecoat4 个月前
Farewell, friend. Hello, LSST.
laacz4 个月前
Has anyone created a 3D map, available via web and with ability to fly through, jump to stellar objects by name, look around, etc?
Qem4 个月前
Hope they have captured an image of Planet Nine somewhere there, and eventually are able to pinpoint it.
评论 #42724721 未加载
评论 #42718520 未加载
guenthert4 个月前
Uh-huh, just in time it seems.<p>&quot;Gaia’s fuel tank is now approaching empty&quot;<p>Well, congrats to all involved to such a supremely successful and important mission. When I went to school, it was said that astronomers were happy if they get the order of a measurement right. No such excuses anymore (at least for some 2 billion &quot;nearby&quot; objects)!
tokai4 个月前
And now to use the data to make the most realistic scifi game. With correct stellar motion during relativistic travel.
评论 #42711637 未加载
ndileas14 个月前
Now that most stars are mapped, next step: map all the planets.
PittleyDunkin4 个月前
I really wish they would have identified Gaia as some kind of satellite. Gaia is also a name for Earth itself.
qwertox4 个月前
You may want to know: the high-res images which are offered for downloading contain the same image which is shown on the page, that is, the infographic.<p>Not worth the download, as I thought that it would contain a huge panorama of the sky.
评论 #42710908 未加载
评论 #42710860 未加载