Coronado PST CaK or H-Alpha

Hi All;

A few weeks ago I had the chance to take a look in a Coronado PST H-Alpha, being a Ham radio operator the sun has been of some interest to me.

After my first look in the PST I new I had to get me one. But now I see that Coronado has ( is ) coming out with a new PST the Coronado PST CaK.

Can any one help with the pro's & con's between the H-Alpha and the CaK filtering. I'm new to this Sol stuff so be gentle.

Thanks for your help.
Bob

Attached Image:

I would stick with the H-Alpha. I've never looked through a CaK scope, but from the pictures I've seen, the CaK pictures are OK but not as interesting as the Ha. Also, I have heard it is more difficult to see the CaK images because it's in a range of the visual spectrum where our eyes are less sensitive. (violet, I think) This is OK for photography. A CCD chip picks up light in even the UV range.

Personally, I thought it was strange that Coronado came out with the CaK in the PST version. The first CaK scopes had disclaimers saying they were mainly for photography.

Kevin