|
The cost of a front filter and blocking diagonal to put on a refractor is pretty much the same as a dedicated H-alpha scope. The main decision you need to make is whether or not you want a double stack. Most of them allow you to put the second etalon on as a retro-fit, so at least in my case, I went for the largest dedicated H-alpha that would fit my budget, with a view to getting the second etalon next 'budget cycle'. It's easily become the most-used telescope I own. Phase of the moon doesn't affect your observing! Even with a single etalon, there's plenty of prominences and surface detail to see on the sun, and if you have a planetary imaging camera, you can see so much more.
You definitely want to have a look through someone else's first - they're not cheap.
regards,
Andrew.
|