昨夜分解大犬α失败~

观测失败,经过核对~这颗星不是大犬a的伴星,今后观测~要注意背景上亮度类似的星体~不过这次也张了经验,算是一次演习吧~  闹出笑话了,多亏资深同好斧正.

  欢迎各位资深同好继续讨论交流~

[ 本帖最后由 Alone狼 于 2007-10-25 14:09 编辑 ]

是不是啊！天……

http://www.space.com/scienceastr ... kywatch_000312.html
看了這網頁的資料, 天狼伴星應該離開主星約7秒或以上.

  晕~看来不是~又白干了~~~5555

只能今晚再试试看了~

樓主如何肯定那不是天狼B星?
AB兩星的距離, 應該是在你用的望遠鏡的分辨極限以內的.

http://www.astronomy.com/ASY/CS/forums/2/180633/ShowPost.aspx
外國有人看過:
================
  I observed Sirius B on Friday, March 30, 2007 from the Mount Wilson Observatory using my Astro-Physics 160 EDF refractor.  Details as follows:

Optics:  Astro-Physics 160 EDF refractor (160mm objective) with 5mm Pentax smc ortho eyepiece and Televue 2x barlow (480 power).

Location/Time:  Mount Wilson Observatory, Mount Wilson, CA; 9:35 PM PDT

Seeing/Transparency:  < 1 arc-second, clear

Method:  Used diffraction spike mask across front of telescope with spikes oriented in a NE-SW/NW-SE direction.  Sirius A put just out of FOV to the west.

Observation:  Sirius B was an easy direct vision observation with the above arrangement, presenting itself as a distinct point of light at a PA of about 100 degrees.  NOTE:  With Sirius A placed back in the FOV I was not able under any circumstance to detect Sirius B.  Amazingly, Sirius was at an altitude of only 27 degrees when this observation was made.

Regards,

Dave Jurasevich
================

我也想看白矮星。。。

那就要大口径了，不知C8得吗？

原帖由 Wah! 于 2007-10-25 14:31 发表

                               
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樓主如何肯定那不是天狼B星?
AB兩星的距離, 應該是在你用的望遠鏡的分辨極限以內的.

http://www.astronomy.com/ASY/CS/forums/2/180633/ShowPost.aspx
外國有人看過:
================
  I observed Sirius B on F ...

  糊涂了~无法肯定~我觉得我看到的那颗星的亮度应该是符合天狼b的亮度的~ 至于距离,我觉得很近,7秒的距离似乎宽了些,当然,没有十字丝一类的装备,无法精确的给出距离.至于背景上有冇亮度类似的星体,我无法肯定,因为没有极其细微的星图~希望老兄多多指教~.

如果np127做不到~估计c8也不容易~但二者的口径确实都够了~c8的优势在于可以更容易的获取大的倍率~