Makes more sense to me to put all the filters behind the wedge, I was just going by what an experienced solar observer had posted on CN. I have 12.5% & 25% ND filters, but also just picked-up a variable polarizing filter, so I can dial-in the exact amount of extinction desired. I've looked through your Baader wedge and solar spectrum filter, it's a very sharp view. I'll be using my setup with an 80mm f/7 University Optics "kitscope" from the old days. Turns out it's the same OTA offered by Unitron for a few years before they folded and semi-APO in performance. Your wedge setup is what convinced me to abandon the Baader film for white-light. It's good, and ecconomical, but not nearly as sharp as a good filtered wedge. On Mon, Mar 16, 2015 at 2:55 PM, Siegfried Jachmann <siegfried@jachmann.org> wrote:
You may want to re-think putting the filter ahead of the wedge. My ND3 and solar spectrum filters are behind the wedge.
I find using just the ND3 filter is too bright. If you want white light you may want to use an additional 12.5% filter. I consider the green solar spectrum filter also as "white" light. But id you want really white "white" light use just a series of ND filters.