solar viewing.

[mikemasey (Mike)]

Just seen a recording of the latest solar action, very impresive. I already have a solar filter for my scope but would like a dedicated solar telescope so I can watch the suns activeties my self. What is the diference between the "H" alpha filters and the Calcium filters?
Which is best for solar flars and surface detail?

[Merlin66 (Ken)]

The Ha solar scopes are the ones that show the surface detail and the proms.
The caK scopes have a filter (not a narrowband etalon) and show the surface in the Blue/UV of the spectrum. Better suited to imaging as the eye (especially in older people) is not very sensitive to that region - the views can be disappointing.
Ha is the way to go!

[mikemasey (Mike)]

Tx Merlin, looks like Ill have to save my pocket money!
Merlin66, Friend of King Arther or grubber?

[Merlin66 (Ken)]

I design Merlin engined Spitfires for flight simulators - the Merlin 66 was the best one ever made by RR.