Re: Adapt 130/6 for solar H-alfa observing/imaging
- I think this w0uld work; to be certain you can check with the solar filter mfg. Looking forward to some solar images.
--- In email@example.com, "bertuseinbertus" <robert.pinxteren@...> wrote:
> Hello everyone,
> I want to get to f/30 or higher before I seriously can use a Solar Spectrum Filter .3 A
> A standard filter will show the full disk with a focal length of 2700 mm or shorter.
> I have the Powermates but would like to have a 3 to 3.2 X.
> Could I stack a PM 2X with some 1.5-1.6 X tele-extender, and still meet the requirements of parallel light waves of the Solar Spectrum. (and mask down to F/30).
> I found several TAK and a TV extender .
> Thanks for reading,