[发现] 用地平模式进行深空天体拍摄！

数码技术的引入使得天文摄影产生变革！这位仁兄不可思议地用地平模式拍下精彩的深空照片：

http://www.users.bigpond.com/lan ... 20Images/index.html

NGC 5139 Omega 星团

Scope: Meade LX90, f/6.3; Camera: Canon EOS 300D;
Exposure: 4 x 19 sec, ISO 800;

Processing: RAW images converted to 16-bit TIF. Averaged dark frame subtracted. Images aligned with Point and Translate + Rotate function and combined using Adaptive Addition in ImagesPlus. Mild Digital Development, Background/Contrast/Stretch, and unsharp mask in Photoshop 7.0.

NGC 3372 (编号不知道有没有弄错)

Scope: Meade LX90, f/6.3; Camera: Canon EOS 300D;
Exposure: 64 x 29 sec (~31 min), ISO 800;

Processing: RAW images converted to 16-bit TIF in ImagesPlus. Dark and flat subtractions. Images aligned using using Centroid and Translate + Rotate function and combined using Adaptive Addition in ImagePlus. Post-processing in ImagesPlus.

在他网页上没有说明是地平模式，不过他在yahoo group 上说明：

-----Original Message-----
From: Peter [mailto:lansma@southcom.com.au]
Sent: 2004年6月16日 14:46
To: lx90@yahoogroups.com
Subject: Re: [lx90] Another Alt/Az success


Hi Ken,

Yep - every single one of them!

Clear and dark skies!

Pete
------------------------------------------------
Home Page: http://www.users.bigpond.com/lansma/
Lat:  42° 53' S; Lon: 147° 19' E



Ken Luo wrote:
> Excellent! Are all thoes images taken under the Alt-az mode?
>
> Clear sky!
>
> Ken Luo
>
>
> -----Original Message-----
> From: Peter [mailto:lansma@southcom.com.au]
> Sent: 2004?6?9? 17:53
> To: lx90@yahoogroups.com
> Subject: [lx90] Another Alt/Az success
>
>
> Hi all,
>
> Here's my latest images from last night, including a (total) 31 minute
> exposure of the Eta Carinae Nebula. Comments welcome.
>
> http://tinyurl.com/ywcuo <http://tinyurl.com/ywcuo>
>
> Clear and dark skies!
>
> Pete
> ------------------------------------------------
> Home Page: http://www.users.bigpond.com/lansma/
> <http://www.users.bigpond.com/lansma/>
> Lat:  42° 53' S; Lon: 147° 19' E
>
>
>
>
> LX90 Online FAQ, visit: http://faq.lx-90.com <http://faq.lx-90.com>
> To
> unsubscribe from this group mailto lx90-unsubscribe@yahoogroups.com
>
>
>
> Yahoo! Groups Sponsor

效果绝对一流啊，不过他具体是如何实现的呢？这么长时间的暴光控制的如此好，用地平式？不知道国内同好有没有这么用的？

第一幅是4张19秒叠加，第二幅是64张29秒叠加。

不过我就有点不明白，叠加能完全取代长时间曝光吗？


另外一个鬼佬的例子：
http://www.buoyshark.com/Test.htm

可能是用meade自带的自动跟踪系统拍摄的

是的。LX90的地平跟踪。

假如那些大型道布森镜子也可以有比较精确的地平跟踪的话，用来拍摄岂不很爽！

littlePig 同好好像也有LX90吧？你也试试啊。

数码单反还是比较贵的...