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旧 Dec 16th, 2012, 16:28     #1
jang
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默认 寻找天体摄影同好-卡尔加里地区

卡尔加里附近有没有爱好天文观测的华人?新购一赤道仪,可以一起出去观测拍摄。有爱好深空天体摄影的,一定联系一下。特此。
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旧 Dec 16th, 2012, 17:46     #2
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默认

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作者: 老广 查看帖子
靠,吓一跳。你这个叫天文好点吧。
天体是这样的:http://kaixin.aoyou.com/index.php/Youji/detail/id/31238
现代人虚伪,明明就是裸体,还用科学名词天体来取用风雅.天体的正解,就是科学的,明确地指宇宙中的在天空中的遥远可见和非可见的物体.其它一切解释都是不折不扣的伪科学,虚伪和欺骗
不过本人也认为,作为业余爱好,2者有可比性,那就是有所拍,有所不拍.
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感谢 jang
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旧 Dec 16th, 2012, 20:59     #3
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默认 可以用望远镜,也可以用长焦头

光学的东西追求是无止境的.具体到钱上来说,望远镜和镜头都是用来烧钱的.
不过赤道仪是最重要的,要精确跟踪,才能进行长时间曝光.
根据目标大小,一般可以用200毫米以上的镜头或者消色差望远镜.
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旧 Dec 16th, 2012, 22:53     #4
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作者: qqcpu 查看帖子
据说有台天文摄影专用机佳能EOS 60Da是干这个用的。谁有?
把普通的相机cmos前面的玻璃去掉,换成全光谱透射玻璃就是了.这种改造对于感光某些星云辐射的高强度红外光谱很有好处.不过不适合于普通摄影.对于星系,星团,完全没有作用.
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旧 Dec 17th, 2012, 20:48     #5
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默认

""""天体,现在主要指裸体,意思是天生的身体一丝不挂"""""

天生的身体一丝不挂,小到大肠杆菌艾滋病毒,一丝不挂不穿衣服,大到猴子大象,鱼虾螃蟹,小草蘑菇大树,都是天生身体,没有穿衣服.都是天体.除了穿衣服的人以外,其余都是天体.
天体就是除了穿衣服的以外的所有天生的生命体.
这么定义也罢,仍然是天体都可以用来摄影.不过摄影从来就是有所拍有所不拍.
其实裸体也没什么好含蓄的,借用如此广泛的定义,除了很少一部分地球稀缺资源以外,酒囊饭袋脂肪肿即使裸体,谁感兴趣.
果体,就是比"裸"还少一件衣服,吃果果的裸体.
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旧 Dec 17th, 2012, 20:50     #6
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默认

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作者: -GoGoGo- 查看帖子
用红外摄影来拍果体?
没听说红外拍果体的,可能是要穿透皮肤看清内红外辐射源.
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旧 Dec 17th, 2012, 20:51     #7
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作者: bonhomme 查看帖子
呃,算我一个!
你是要拍果体还是天生一丝不挂的?
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旧 Dec 17th, 2012, 22:23     #8
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默认

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作者: 笑熬漿糊 查看帖子
俺老昨晚拍摄的“天体”哈,就是离地球最近的月球,看着奇怪的说,好像月蚀差不多,从第一张“天体”照片可以隐约的看见整个月亮的轮廓,应该是下玄月哈,顺月亮两头的月尖可以看见一个圆,第二张也是同一个月亮哈,可是差不多全亮的,狠奇怪,所以就拍下了:

http://i48.tinypic...
终于有人说正题了,还是要加引号才能指天上的球体.不加引号就是指天生的身体.
我是新来的.
这是新月,明亮的部分是反射阳光的,不太亮的地方是反射地球光的.
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旧 Dec 18th, 2012, 18:37     #9
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作者: googlebot 查看帖子
天文摄影,现在多用摄像头,多次拍片,最后电脑合成图像,
加拿大晚上太冷,不太适合户外活动,
适合的拍摄项目,土星的光环,木星的风暴眼,
您这是说的行星摄影,适合小视面高亮度的行星以及月面.受大气影响极大.玩一会就不再玩了,目标太少,月,木星,土星,而以.
深空天体亮度低,视面大,目标众多,数千个星团星云星系,以及暗物质等,需要精确跟踪长时间曝光.细节追求没有止境.例如被拍烂了的猎户星云以及仙女星系.
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旧 Dec 18th, 2012, 18:39     #10
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默认

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作者: 笑熬漿糊 查看帖子
不管怎样哈,俺老还是喜欢天体。
胖老头儿天体您也喜欢吗?自拍?
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旧 Dec 21st, 2012, 19:27     #11
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作者: 老广 查看帖子
发现一个付得起的镜头,但不知道效果行不行。
http://www.digitalrev.com/product/sa...MTAwMTA2NQ_A_A
不建议买这个.一般的学习天文摄影进程,首先是用普通三脚架以及现有的短镜头练习星迹摄影,然后可以用望远镜摄月,体验色差和像场弯曲.有了消色差望远镜,可以考虑赤道仪,学习如何精确调整极轴以及跟踪技巧.深空天体有很多比月亮大若干倍,不需要很长的焦距,焦距太长就很难精确跟踪,曝光时间也随焦距延长而迅速增长,不增加导星设备的话普通赤道仪无法精确跟踪.以下是我准备使用的镜头,先拿这个练习.还有一个消色差望远镜,焦距500毫米,技术成熟以后再说.白色的是几年前买的FD口的300/2.8我自己设计改的EF口.黑色的是200/2.8
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感谢 jang
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