大日珥 (20090117)

[David]

It's time to work....

[David]

Full disk

[MythPlayer]

好æ￾¶çœ¼çš„ç￾«ç„°

[David]

Rain of fire. Individual frames were shot and processed by a student of mine.

Details:
Animation of 10 frames, each separated by 2 minutes.
Taken with LS60T and DMK21

[Skyobs]

Wow!

By the way, is 20090117sun.jpg a stack of central disk photo and outer rim photo? Does it mean the prominence is usually not visible to the eye even in solar telescope?

[David]

Wow!

By the way, is 20090117sun.jpg a stack of central disk photo and outer rim photo? Does it mean the prominence is usually not visible to the eye even in solar telescope?

Yes, 2 separated photos were used for the disk and rim. You can see the prominence and disk details only in H-alpha solar telescopes, which allows only H-alpha wavelength to come through.

With my LS60T, the prominence is slightly dimmer than what I show in this picture, but still easily visible to the eye.

[Wah!!]

We can see both prominence and disk details through an h-alpha solar telescope (bandwidth < 1.0A) with our eyes.

But it is difficult to capture them both at the same time with a CCD because the dynamic range is not as high as our eyes.

[Skyobs]

Thanks for the info and sharing of pictures, especially the animation. Prominence is the fastest changing thing in space that have a higher chance to be observed.

[David]

Thanks for the info and sharing of pictures, especially the animation. Prominence is the fastest changing thing in space that have a higher chance to be observed.

I've processed another animation taken a few days ago, but it is not as dramatic as the one shown above.

So the rather dramatic animation above was caught by sheer luck that I was shooting at the right time.

[黄伟]

非常棒,日珥,色球层非常清晰.

[David]

另一日的animation，沒有上面的那麼活躍

[Skyobs]

都好壯觀
拍長些就更好. 是否也是每幀兩分鐘?

[David]

都好壯觀
拍長些就更好. 是否也是每幀兩分鐘?

謝謝。現在練好D手勢先，到有正野時都想拍好長。

都是兩分鐘一張。

[Rocco]

正
用邊支鏡影既？
what about the LS100T??

[David]

正
用邊支鏡影既？
what about the LS100T??

Thanks. I used LS60T, which has a 60mm aperture.

I've just got the LS100T. Will try to shoot with it sometime soon when weather permits.