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Thread: Optimal position for a visual filter

  1. #1
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    Default Optimal position for a visual filter



    To all you guys and gals who regularly use filters: Does it make any difference where in the light path the filter resides? For example, if I insert an eyepiece into the Paracorr I can have the filter screwed onto the end of the eyepiece or onto the end of the Paracorr.
    I have been putting it onto the end of the Paracorr for simplicity.

    Is there a correct position? Or, does it not make any difference?
    Thanks for your consideration.
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    Default Re: Optimal position for a visual filter

    Not really, as long as it works for you. I prefer to use them on EPs simply because I always compare +/- filters and it easy to have one EP with and another without.
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    Default Re: Optimal position for a visual filter

    I thread mine on the end of my 2" diagonal. Then I can use any eyepiece with it that night I choose. Mostly use them with my SCT.
    My eyes
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    Default Re: Optimal position for a visual filter

    I do the same as Leveye and attach it to the nosepiece of the diagonal
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    Default Re: Optimal position for a visual filter

    I use my 2" filters on the bottom of my 1.25"-2" adapter. I can then use either eyepiece barrel size with my 2" filter. Granted, this doesn't put any extra glass between EP and filter...
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    Default Re: Optimal position for a visual filter

    I've been using the filters on the bottom of the ep's just because... Eventually I want a filter slide integrated into the focuser or inside the ota of my scope.

    I think where a filter is located is more or less a matter of convenience..

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