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bino and filters


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I'm happy owner of  25×100 CELESTRON binos, i want to know :

a) is really an improvement to use grey filter for lunar observation ? 

b)is it possible to screw filter on these oculars ?

Thanks for your help.

 

 

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On 3/13/2017 at 15:21, BinocularSky said:

However, a deep red filter can be useful for seeing detail on a Full Moon.

Can you recommend a good "deep red" filter? I wouldn't know what is "deep red" and what isn't...

:happy11:

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