www.astrocafe.hk

WL: 白光太阳...Baader Solar Film + Marumi Green filter + Hoya ND4 + 1.6x extender + SBIG-4020M
Ha: 38mm ERF + Daystar 0.45A Ha + SBIG-4020M
CaK: Lunt CaK solar telescope + Lumenera SKY-nyx 2-1M

由于电脑只有一台，三个频道的太阳并不是同时拍摄，先拍摄白光，然后是CaK，左后是Ha。







把三个频道拼合的动画。

The sun suddenly has lots of interesting regions today after many days of relative quietness, but shame about the weather over here or I would get my gears out for the interesting activities today. For someone who has not experienced solar maximum with solar equipment (i.e. me!), the activities today are really fantastic.

I really love the CaK image. The animation is very nice. I like the smooth transtion from one shot to another.

我回去問問主人，想不想統整一下文章，講講太陽是如何觀測的?　

Too bad! The weather in HK will not be good anyway! I wish there is a gap in the sky so that I can have a quick look!

According to http://www.solarmonitor.org/ , the activity is high today.

終于又再看到william的太陽攝影了~~
很期待考完試回去家裏把望遠鏡拿出來曬曬太陽，順便看黑子~

Wow, an X-class solar flare erupted on 15-2-2011!
http://www.spaceweather.com/swpod2011/1 ... 2flare.gif

David，其实我也是观测太阳的新手，来着的太阳活跃期，有排忙了...。
迟些或许会进多两台电脑分别操控不同的频道，但还是面对着harddisk储存量不够，由于使用SKY-nyx 2-1M，10fps拍摄，以这样活跃的黑子区，至少每隔一分钟就要拍摄一段30秒，1GB的影像，要每天准备500MB才可以应付了。

如果此黑子区持续活跃到太阳的边缘，到时可以尝试以CaK拍摄出磁场的线条出来。

kwlim 寫:終于又再看到william的太陽攝影了~~
很期待考完試回去家裏把望遠鏡拿出來曬曬太陽，順便看黑子~

记得要用太阳滤光纸啊。

universe24 寫:

kwlim 寫:終于又再看到william的太陽攝影了~~
很期待考完試回去家裏把望遠鏡拿出來曬曬太陽，順便看黑子~

记得要用太阳滤光纸啊。

一定會記得的~我不想我的眼睛瞬間蒸發~~

Dear universe,
What is the aperature of the CaK telescope?
Regards,
Willis

Dear willis,
The CaK telescope is 60mm only.
If I wanna zoom just sunspot to be capture, I will take out the CaK module and place it on larger aperture.
Anyway, the CaK module is just can use on aperture below 100mm.

universe24 寫:Anyway, the CaK module is just can use on aperture below 100mm.

design an ERF and pass only Cak spectrum line for your 152APO

Perhaps Lunt can do so? Just don't how is the cost for custom make one...

no, I never heard that. Though I am sure Lunt can make one, but will be expensive.

universe24 寫:迟些或许会进多两台电脑分别操控不同的频道，但还是面对着harddisk储存量不够，由于使用SKY-nyx 2-1M，10fps拍摄，以这样活跃的黑子区，至少每隔一分钟就要拍摄一段30秒，1GB的影像，要每天准备500MB才可以应付了。

觀察太陽真的令自己整日都很忙碌，日間拍攝了數gigabytes的片段後，總要數小時處理，同日晚上卻又可能好天，外出觀星，第二天又可能繼續晴天，又要拍攝，但昨日的片段仍未處理……

有些時候，當日間晴天時，我竟會希望晚上有雲呢。

最近这几晚我这儿的天气都不错，虽然不是整晚都晴天...但太阳上面的活动似乎比较刺激，日日新鲜日日坚，所以晚上暂时割舍了。
前两天拍摄的一些Ha放大摄影，到现在还没处理完毕，整26条1GB的资料。

universe24 寫:前两天拍摄的一些Ha放大摄影，到现在还没处理完毕，整26条1GB的资料。

期待中!

Very Good picture.
But it seems that the activities of sun is very active........