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Quote:Regarding polarizers, I understand the wedge light being polarized, thus requiring only one other polarizing filter. I thought its use was meant to increase contrast, not worsen it. Supposedly one rotates the filtered eyepiece to adjust to the best view. What is the advantage of the continuum filter? I was totally unaware of the circular type of polarizer (meant for digital cameras?). Are the polarizers sold by astro stores the circular or linear type?
SV85s LOMO and SV102A LOMO, DM4
Quote:The NP101 is a petzval design which is not recommended for use with a Herschel wedge. I understand that the built up heat can damage the lens in this design.
Lunt LS60TS50DS/B1200/FT SolarMax 60mm filter Denk.Bino's with 21's/TV Genesis Lunt Herschel Wedge/ES 127ED Orion ED80T- CF/C4-R/CG-5 C6-R/Moonlite CF2 /Atlas GoTo 12" LB/Roundtable/Discovery 10"
Quote:Personally I do not use a polariser. I know some people like them but to me they seem to be throwing away the wedge advantage of high contrast ... if you really want to use a polariser, note that the output beam from the wedge diagonal surface is fairly well polarised so you only need a single polarising filter, but one which is a simple linear polarising type, not the circular polarising type usually seen these days. But do try either the Baader Solar Continuum or a simple green Wratten #58 instead.