File:Ngc1990.jpg
Ngc1990.jpg (576 × 526像素,文件大小:154 KB,MIME类型:image/jpeg)
说明
摘要
[编辑]This image shows Alnilam lighting up NGC 1990. The photo was taken by Glen Youman of the website astrophotos.net. As of March 2004, the image is also available at http://astrophotos.net/images/nebula/ngc1990.jpg .
The page http://astrophotos.net/pages/Nebula/NGC%201990.htm lists the following information about the image:
NGC 1990 Orion Foresthill, California December 1998 FS-128G (ag, ST-4) hPJ400, stack of two 45 minute exposures
NGC 1990 surrounds the belt star Epsilon Orionis. This reflection nebula is of such low magnitude as to be invisible in all but the larger scopes. There are two very faint detached reflection nebulae in the lower left of the photo, my star charts do not identify these nebulae.
Copyright information
[编辑]已授权您依据自由软件基金会发行的无固定段落及封面封底文字(Invariant Sections, Front-Cover Texts, and Back-Cover Texts)的GNU自由文件许可协议1.2版或任意后续版本的条款,复制、传播和/或修改本文件。该协议的副本请见“GNU Free Documentation License”。http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
本文件采用知识共享署名-相同方式共享 3.0 未本地化版本许可协议授权。 | ||
| ||
本许可协议标签作为GFDL许可协议更新的组成部分被添加至本文件。http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
The following email confirms that the image is under the GFDL. Email addresses have been modified to prevent spam.
Date: Wed, 24 Mar 2004 07:17:51 -0800 (PST) From: Glen Youman <gyouman at sbcglobal.net> To: William T. Mahan <wtm2 at duke.edu> Subject: Re: Request to redistribute one of your photos Mr. Mahan- You have my permission to use and redistribute any and all of my web-site images under the conditions you have listed in your subject e-mail. NGC 1990 was a film based image. I no longer have access to a negative scanner but if you need to rescan the image, I will gladly mail the original negative. "William T. Mahan" <wtm2 at duke.edu> wrote: Dear Mr. Youman, I wanted to let you know that I enjoyed your astronomy photos at astrophotos.net. I found it by searching Google for a star I wanted images of, while doing research for the free online encyclopedia "Wikipedia". I thought that your images (and one in particular) might be worthy of inclusion in our growing document. Wikipedia (http://www.wikipedia.org) is a free encyclopedia that is collaboratively edited by volunteers from around the world. Our goal is to create a comprehensive knowledge base that is not only available at no charge, but is also freely distributed. I am specifically seeking your permission to use your photo of NGC 1990 for an article I am writing about Epsilon Orionis: http://www.astrophotos.net/images/nebula/ngc1990.jpg I'd like to include your image in this article: http://www.wikipedia.org/wiki/Alnilam . (To get a sense of the freedom of Wikipedia, you yourself can edit this page without registration, right now!) We can only use your materials if you are willing to grant permission for it to be used under terms of the GNU Free Documentation License. This means that although you retain the copyright and authorship of your own work, you are granting permission for all others (not just Wikipedia) to use, copy, and share your materials freely -- and even potentially use them commercially -- so long as they do not try to claim the copyright themselves, or try to prevent others from using or copying them freely. You can read this license in full at: http://www.wikipedia.org/wiki/Wikipedia:Text_of_the_GFDL (note: To keep things simple, we don't use Invariant Sections, Front-Cover Texts, or Back-Cover Texts) This license also expressly protects creators "from being considered responsible for modifications made by others" while ensuring that creators get credit for their work. There is more information on our copyright policy at: http://www.wikipedia.org/wiki/Wikipedia:Copyrights We chose the GNU FDL license because it is the best available tool for ensuring that our encyclopedia is and can remain free for all to use, and for providing credit to everyone that donates text and images. It may or may not be compatible with your goals in creating the materials available on your website -- that's for you to choose. Please be assured that if permission is not granted, your original materials will *not* be used at Wikipedia -- we have a very strict policy against copyright violations. If you agree, we will credit you for your work in the image's permanent Description Page, noting that it is your work and is used with your permission, and we will provide a link back to your website. Thank you for your time. Kindly, Wil Mahan --------------------- Glen Youman Penryn, California http://www.astrophotos.net/ - Home page http://www.penryn-esd.k12.ca.us/ -Penryn School http://astro.sci.uop.edu/~sas/ -Stockton Astronomical Society http://www.darksky.org - International Darksky Association
许可协议
[编辑]已授权您依据自由软件基金会发行的无固定段落及封面封底文字(Invariant Sections, Front-Cover Texts, and Back-Cover Texts)的GNU自由文件许可协议1.2版或任意后续版本的条款,复制、传播和/或修改本文件。该协议的副本请见“GNU Free Documentation License”。http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
本文件采用知识共享署名-相同方式共享 3.0 未本地化版本许可协议授权。 | ||
| ||
本许可协议标签作为GFDL许可协议更新的组成部分被添加至本文件。http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
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 | 2006年11月7日 (二) 18:58 | 576 × 526(154 KB) | Edfri(留言 | 贡献) | This image shows Alnilam lighting up NGC 1990. The photo was taken by Glen Youman of the website astrophotos.net. As of March 2004, the image is also available at http://astrophotos.net/images/nebula/ngc1990.jpg . The page http://astrophotos.net/pages/Ne |
您不可以覆盖此文件。
文件用途
以下页面使用本文件:
全域文件用途
以下其他wiki使用此文件:
- af.wikipedia.org上的用途
- ar.wikipedia.org上的用途
- ast.wikipedia.org上的用途
- az.wikipedia.org上的用途
- be.wikipedia.org上的用途
- bn.wikipedia.org上的用途
- br.wikipedia.org上的用途
- ce.wikipedia.org上的用途
- cs.wikipedia.org上的用途
- de.wikipedia.org上的用途
- diq.wikipedia.org上的用途
- es.wikipedia.org上的用途
- fa.wikipedia.org上的用途
- fi.wikipedia.org上的用途
- fr.wikipedia.org上的用途
- gl.wikipedia.org上的用途
- he.wikipedia.org上的用途
- hi.wikipedia.org上的用途
- hr.wikipedia.org上的用途
- id.wikipedia.org上的用途
- it.wikipedia.org上的用途
- ja.wikipedia.org上的用途
- kk.wikipedia.org上的用途
- lv.wikipedia.org上的用途
- mk.wikipedia.org上的用途
- my.wikipedia.org上的用途
- nl.wikipedia.org上的用途
- no.wikipedia.org上的用途
- pl.wikipedia.org上的用途
- pnb.wikipedia.org上的用途
- pt.wikipedia.org上的用途
- ro.wikipedia.org上的用途
- ru.wikipedia.org上的用途
- sh.wikipedia.org上的用途
- sk.wikipedia.org上的用途
- sr.wikipedia.org上的用途
- sv.wikipedia.org上的用途
- tr.wikipedia.org上的用途
查看此文件的更多全域用途。
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。
JPEG文件备注 | File written by Adobe Photoshop¨ 4.0 |
---|