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hi John,
what filter size were you going to use? will you need to be larger than 1.25" for the dslr?
I haven't heard much on those optolong ones... have you seen any real life examples of images taken with them?
I went with the baader HaSIIOiii (~7-8nm) as they were the narrowest for the money (and proven in the field - halo/reflection free).
I think it is a case of the narrowest you can afford/willing to part with. Are you going to shoot at f5?
Russ
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