The first scheduled Winchester Park sunparty is April 4th. On Mon, Mar 16, 2015 at 2:55 PM, Siegfried Jachmann <siegfried@jachmann.org> wrote:
The first scheduled Winchester Pars sunparty is April 4th. That same morning, btw, is a very short lunar eclipse.
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.
Sig
On Mon, Mar 16, 2015 at 11:40 AM, Chuck Hards <chuck.hards@gmail.com> wrote:
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?
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