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[项目新闻] [BOINC] [天文类] Orbit@Home

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 楼主| 发表于 2008-7-9 10:11:25 | 显示全部楼层
国内目前啥项目也没有。。。。

话说前些天看到有位中文名字的朋友在boinc项目开发的邮件列表中出现比较多次,忍不住问了一下,他说是一名在校生,希望能早日看到他的项目正式发布:)
发表于 2008-7-9 11:38:39 | 显示全部楼层

回复 #60 coffee 的帖子

这个项目确实很有意义,主要是看美国的科幻片看多了,经常看到外星天体撞击地球,世界末日!
 楼主| 发表于 2008-7-18 20:34:58 | 显示全部楼层

Submitted by tricaric on Fri, 07/18/2008 - 07:28.

Just a quick note to say that all is proceeding well, and the results we're getting have been presented at the ACM conference. You can download the PDF of the presentation here: http://orbit.psi.edu/~tricaric/ACM.2008.Tricarico.pdf

一切进展顺利,报告已经提交给ACM,您可以在上述地址下载报告的PDF版本。

We don't expect to release new WUs before late August, mainly because we need to update the application before then to add support for a few extra features, mainly on the science side. We'll be in "vacation" mode for a few weeks, and resume normal operation in mid-August. The website is going to stay fully operational, but in case of problems expect longer response times. It's monsoon time in Tucson AZ, so any serious power outage will trigger a clean shutdown of the system.

八月底之前都不会分发新的任务包,主要因为我们需要增加一些新的、研究内容相关的特性到计算程序中。接下来有几个星期我们放假,然后在八月中旬前继续。网站不会暂停服务,但万一出问题,可能相应的恢复时间会更长些。

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发表于 2008-7-18 21:17:06 | 显示全部楼层
我一个都没抢到过....
 楼主| 发表于 2008-7-18 21:20:14 | 显示全部楼层
呵呵,等项目正常运转后应该就多了:)

话说我手头那个已经算了好多天了才70%不到。。。
发表于 2008-7-19 13:29:39 | 显示全部楼层
快点给我算!看不到higgs boson,我可要转向M理论了!标准模型见鬼去吧!
 楼主| 发表于 2008-7-19 14:00:33 | 显示全部楼层
? 和这个项目有关系吗?

原帖由 zhuyunqing 于 2008-7-19 13:29 发表
快点给我算!看不到higgs boson,我可要转向M理论了!标准模型见鬼去吧!
 楼主| 发表于 2008-8-22 08:11:50 | 显示全部楼层

Reaching 5,000 Users, 10,000 Hosts Milestone

Submitted by tricaric on Thu, 08/21/2008 - 21:59.

The 5K users, 10K hosts mark should be reached within days, maybe just hours from now. Having so many users (and hosts) believing into this project is a great privilege and an important motivator, and we thank YOU all.

项目的参与者已经上升至5千位用户和1万台主机,感谢大家的支持。

On a more technical note, we're don't plan to be releasing new WUs for a few more weeks. We will update you by late September at the latest. The process of switching from simulated data to real world data is taking longer than expected, mainly for a lack of publicly available data. The situation is actually more difficult than what we anticipated when we started to work at this project. Essentially, all sky coverage data is collected by one international organism, the Minor Planet Center (MPC). This data contains information of the sky regions covered by each telescope each night. The MPC is collecting the data, but is failing to redistribute it to the international community for research purposes. All that MPC does with the data is to create interactive plots of the recent sky coverage activity. We have personally interacted with the MPC to try to put a remedy to this problem, but no solution has been so far anticipated. As frustrating as this is, we'll try once more to find a solution with MPC, and then we will be forced to put forward a formal protest, and being backed by more than 5,000 people will help.

几周后,我们将发布新的任务单元。从处理模拟数据转向为处理真实数据还要花更多时间,主要是因为缺少可以公开获取的数据。情况甚至比我们开始这个项目时预想的还要困难。基本上,所有的数据都是由一个国际组织(MPC)收集的,但它并没有把这些数据重新分发至其它研究机构。我们已经在和MPC联系,但目前还没有结果,我们还会再尝试,然后可能将不得不发出一个正式的抗议(?),毕竟有5000人在背后支持我们:)

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 楼主| 发表于 2008-8-25 08:04:33 | 显示全部楼层

Sky Coverage Data Released by the MPC

Submitted by tricaric on Sun, 08/24/2008 - 12:01.

The Minor Planet Center has released today the data relative to the sky coverage of many of the NEOs surveys. This is very good news, as we get one step closer to applying the results of our research to real telescopes. Please join us in a big Thank You to all the people who made this possible, including the MPC team and all the Astronomers involved with the NEOs surveys.

http://www.cfa.harvard.edu/iau/info/PointingData.html

非常好的消息,MPC已经发布了我们需要的原始数据!感谢MPC团队和所有相关的天文学者。

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发表于 2010-1-6 09:27:05 | 显示全部楼层

orbit@home

2010 年 1 月 6 日

2009 年项目通过志愿者的努力已经完成了近地小行星(NEAs)的数值模拟,覆盖 5 到 20 年的范围。

2010 年将有两个主要的任务:

1、详细的近地小行星地图,包含已知和未知的 NEAs,将更清楚的表明可能隐藏的未知小行星。有助于项目改善搜索的亮度和尺度。
2、公开在网站上更新每晚的天图,以便有兴趣寻找 NEAs 的志愿者测试和评估,有助于发现更多的 NEAs

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 楼主| 发表于 2010-1-6 10:33:15 | 显示全部楼层
2010年要跑真实数据了,不错~~
发表于 2010-1-6 10:49:39 | 显示全部楼层
以前没跑过。。看来一下任务。。需时相当大。。数百万秒。。  全天不停要 30 - 90 天。。
 楼主| 发表于 2010-1-6 11:42:26 | 显示全部楼层
我刚才看到新闻时也以为我没跑过,但登录进去一看还有4k分数,这才回想起来,大概就是一个任务包的分数。。。
发表于 2010-3-17 08:52:10 | 显示全部楼层
2010 年 3 月 17 日

项目的代码开发工作已经在 2010 年 3 月开始恢复。现在正在编写和测试计算程序以适应于观察数据和准备任务。下一步将完成和测试 BOINC 的应用程序。初步的测试任务会在 2-3 周内发布。

http://orsa.git.sourceforge.net/ ... orsa/orsa;a=summary

http://orsa.git.sourceforge.net/ ... e3fd8001810;hb=HEAD

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 楼主| 发表于 2010-9-13 11:15:28 | 显示全部楼层
Orbit@Home in Production Mode with Real Data
Orbit@Home开始处理真实的观测数据啦!

Submitted by tricaric on Sun, 09/12/2010 - 18:24.
      

We are pleased to announce that orbit@home is now in production mode. WUs are generated now at a rate of about 300,000 every week, each one requiring about one hour to complete on average personal computers. We plan to maintain this production rate for at least one month, and then reassess how to continue the research.


每周大概生成30万个任务,每个任务大概需要一小时左右完成。然后大概会至少持续运行一个月,之后再重新评估项目的发展方向。


At this moment the research of orbit@home uses real observational data from dedicated near-Earth objects (NEOs) surveys. These surveys have dedicated telescopes that observe every night (weather and moon allowing), and detect asteroids and comets in the solar system. Most detected objects are already known and cataloged, but occasionally a new object is discovered. Historical observational data is available covering over a decade, and orbit@home is using it to generate an high-resolution population of NEOs, that is, mapping not only the known ones, but also the probability distribution of the ones that are still unknown. When we complete this work, we will have a very clear idea not only of how many asteroids and comets with a given brightness (related to their size) are still unknown, but also how they are distributed in space, and this is a very precious information for NEOs surveys that try to discover them every night. In principle, it will be possible to "hunt down" the large NEOs (larger than about 1 km) that are still missing in the catalog of known asteroids, and then progressively continue the search to smaller ones.

现在分析的数据来自于专门针对NEO(近地天体)的巡天数据,专用的望远镜每晚都会进行观测(天气和月光允许的情况下),寻找太阳系内的小行星和彗星。大部分探测到的星体都是已经并且经过分类的,但偶尔也会碰到一些没发现过的星体。历史观测数据覆盖了十年的时间,orbit@home将分析这些数据来得到NEO的一个高清晰度的分布情况,这其中不止是那些已知的NEO,还有那些未知的NEO的分布几率。当我们完成这项工作后,我们将不仅能精确地了解到有多少特定亮度的小行星和彗星还没有观测到,还能了解到它们在太空中是怎么分布的,而这对于每晚进行的巡天NEO观测将有非常大的帮助。理论上,我们将能够发现所有尚未发现的大于一公里直径的NEO,在这之后再进一步寻找更小的那些NEO。


The complexity in tracking NEOs and describing their distribution probability has several sources: first of all, it's not simple to characterize how efficiently a telescope is observing every night, and how different factors play together in determining this; secondly, all asteroids move on different orbits, and when observed from the Earth, they all have different apparent rates of motion and directions, so their probability distributions keep stretching and moving on the sky plane. So doing this on a decade worth of observations, and for the whole NEOs population, is a very demanding computational problem, and tackling it could not have been possible without the help of tens of thousands of volunteers.

整个过程还是很复杂的,包括望远镜的观测效率受限于相当多的因素,天体的运行轨道也是多种多样,所以需要相当大的计算资源,如果没有上万志愿者的参与,这项工作将难以完成。


Preliminary results will be presented at the AAS Division for Planetary Sciences Meeting in October 2010.

初步的结果将在十月份的一次会议上进行说明。

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