查看完整版本: Roland's M57

Roland's M57

[b][i]Here is the M57 HaLRGB image best as I could do it. It is about 12 hours of data over 3 nights, last night was the best seeing with around 1.6 arc sec FWHM. eH'C~k#h%Qe

|a1bAEe [color=red]12" AP Mak-Cass[/color] at F12.5, STL11k camera, Baader Ha and RGB filters, guided with 1200 mount. [/i][/b]d4l?x0|9}5T6d
Wide field HA version: 1\p[z
B
}4y
[attach]12599[/attach]
|%o.\K"T`7A Cropped HA version:
TY#@wy5Ll9a [attach]12600[/attach]
@^~x0U`6A Cropped Color version: [/?8_Y+l/y)P k
[attach]12601[/attach]2u H5E7}&[1^
作者：Roland Christen
+UJb[{7E3s 转自AM

原来AP老板摄影也这么了得！看来这个目标不好拍，12寸的镜子曝光了12个小时bbbb39

因为焦比太长了.需要的暴光时间是F4镜子的10倍左右.

马卡拍深空，太强了，那得曝光多长时间啊，赤道仪不好，非得累吐血不可

拍的个头不小啊!果然集距是够长度了!

[quote]原帖由 [i]redfox_pd[/i] 于 2008-8-18 00:41 发表 [url=http://www.astroview.com.cn/redirect.php?goto=findpost&pid=67304&ptid=6803][img]http://www.astroview.com.cn/images/common/back.gif[/img][/url]!N/b*I+Jn4X(rn$GH5k
原来AP老板摄影也这么了得！看来这个目标不好拍，12寸的镜子曝光了12个小时bbbb399" /> [/quote]%EG2Ys0m;f;`,o
Roland Christen 也是天文摄影爱好者，尤其对于CCDJmN?:o8f6S
这有他个人摄影网站，可以看看
b0Pmn0~ [url=http://geogdata.csun.edu/~voltaire/roland/][size=3]http://geogdata.csun.edu/~voltaire/roland/[/size][/url]

回复 6# 的帖子

谢谢。果然是多产的天文摄影爱好者。bbbb16