Thanks Ziggy. I just got my hands on a Lunt 2" wedge. It includes an internal ND3 filter, and according to Lunt, that's all you need for safety. A polarizing filter is suggested so you can fine-tune the image brightness to suit the magnification, but that's not a safety requirement. I've read that some people are urging use of the IR & UV blocking filter ahead of the wedge, as a further precaution, so I'm looking for folks who have some experience with the blocking filter. I've ordered one (Baader) from Agena, should be here by next weekend. With luck I can bring my new white-light setup to Winchester Park next Saturday. I've replaced the 50mm refractor & Baader filter, with an 80mm refractor & Lunt wedge. Used on the same mount with the double-stack PST. You going to Winchester on Saturday? On Mon, Mar 16, 2015 at 11:23 AM, Siegfried Jachmann <siegfried@jachmann.org
wrote:
I use a solar spectrum and ND filter with the wedge. Gives a pleasant greem image. On Mar 16, 2015 10:42 AM, "Chuck Hards" <chuck.hards@gmail.com> wrote:
How many of you who are using a Herschel wedge for white-light viewing are also using an IR & UV blocking filter ahead of the wedge?