"Awesome colors and composition. Where was this taken that you got 12 hours of night?"

It was taken near Bendigo (southern australia) during the winter solstice & new moon, longest night of the year.

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"i have only one question i have Seen in the web that taking photos like this can make the camera to get very hot and this can affect your camera after this.. I'am new in this class of photo what can you tell me about this?

There was more chance of the camera freezing than overheating. I've shot others during the summer and the only difference is increased noise from the higher ambient temperature. The sensor runs a little warm but its nothing to worry about. My camera has done around 50 hours of startrails with no problems.

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"Fantastic! Given that you captured 720 images over 12 hours, have you tried creating a time-lapse video? "

No, but I might give it a go at some stage.

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Awesome photo. Really breathtaking. How did you manage a 12 hour exposure?  What kind of filter did you use?

I used a Lee 0.9 grad for sunset & sunrise, I removed the filter system and attached the lens hood for the startrail shots (helps prevent dew formation). The 12 hours was made up of 720 x 60second shots stacked in photoshop.
I used a MD-B11 battery grip with two EN-EL15 batteries to power the camera.

--拍摄地点？
--澳大利亚南部Bendigo，冬至日附近的新月之夜。

--这么长曝会不会发热损伤cmos？
--不会，相机没冻住就不错了。夏天也这么拍过，顶多是噪点稍微多一些。作者本人累计这么拍了够50个小时了，相机没有出现任何问题

--12个小时的曝光如何完成的？用滤镜了吗？
--日出日落用了LEE的3档渐变，拉星轨时取下了滤镜，装上了遮光罩，可以防止镜片结露。（这是个好经验！不知道作者是不是还有别的秘籍没说出来，我拍星空的时候就经常受到露水的困扰！）

[2011-09-02 23:56 补充如下]

——有没有尝试延时视频？
——没，不过将来也许会试一下