(English version follows Chinese Part)
近几日所在的城市天气比较晴，夜晚在市区也能看到不少星星，就勾起了以前拍星轨的愿望。恰巧手头又有能够全手动设定的相机以及定时拍摄必备的快门线。另外，画廊还缺个图片用的版权标志，需要一幅深底色的照片配合测试。星轨照片挺合适，说干就干。
使用佳能G15卡片机的M档，设定快门为1秒，光圈f2.8，感光度ISO80（佳能G15在长曝光设定下只能使用ISO80，不能使用高感），使用快门线每20秒拍一张，总共拍了59张。然后使用<Startrails>软件合成为星轨照片，最后使用Lightroom微调色彩等参数。得到效果不错的试验品。（成品图片戳这查看）
最后也决定了版权标志的设计，比较简单，就是C标+LOGO+网址，文字字体是TechnicLite，样式如图：
图.1 (Fig.1)
另外，也确定了画廊图片的基本尺寸标准。尺寸为1200*800像素（3:2的边幅现在比较主流），文件不大于300k。这样既能保证画质，又能节省站点空间。
The sky was really clear last night because of heavy rain yesterday. Stars were visible to the naked eyes. An idea of star tracks photography occur to me. (I had thought of it for long.)
Luckily, I’ve got a Canon G15 camera with M(anual) model and a timer remote controller(electronic cable shutter). Those two are necessary for time-lapse photography. After all, I need a pic in dark background for testing copyright logo.
By the M model, shutter was set in 1 sec, aperture was f/2.8, sensitivity was ISO 80 (Canon G15 can not set high ISO by the low speed shutter). 59 pics was shot in every 20 sec. The program ‘Startrails’ was used to process pics in one photo which is ‘star tracks’. After PS with color and brightness, I’ve got a nice one. (Click For Photo)
The copyright logo design was also decided (As Fig.1). A simple combination of C(opyright) symble, site logo and site address. Font style is TechnicLite.
By the way, upload photos would be under the standard for balance between quality and storage space saving. Margins will be 1200pix * 800pix (3*2 is popular style). Each files should be limited under 300kb.