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Thread: Moon Filters

  1. #1
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    Default Moon Filters



    Hi All...

    I got my moon filter a while back (Celestron 94119-A). A bit disappointed as it seems to mostly plastic... I was expecting something more like a camera filter!? I suppose it will be just fine tho'.

    Anyhow, Celestron says this filter has a transmission of ~18%. Reading through the forums, I see reference to other filters with numbers of 13%, 15%, 25%, 30%... I know this means the amount of light through the filter. Just wondering if there is a "sweet spot" in the transmission numbers or it it just a matter of preference?

    Thanks!

    Amanda (Still trying to get through all the posts!)
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  2. #2
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    Default

    depends on your scope diameter - 18% for a 10" may be 30% for a 6"
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  3. #3
    ajward's Avatar
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    Default

    Quote Originally Posted by jenniferchristine View Post
    depends on your scope diameter - 18% for a 10" may be 30% for a 6"
    Cool! I'll play with the 18% and look at something in the 30% range. Going to be using it on my PS 127 EQ.

    Many Thanks,

    Amanda
    Celestron Nexstar 60 SLT + 102 GT OTA - 76 EQ - 127 EQ - SP-C8 SCT - CG-4 Mount
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  4. #4
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    Default

    Hi Amanda
    If you are thinking of buying different strengths of Moon filter - I would consider a variable polariser instead.

    By adjusting the VP filter you can vary the amount of dimming by just the right amount to suite the scope, and conditions at the time.
    They also have the advantage that when used at a low setting, they can help draw out a little more detail by reducing the glare from bright planets.
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    Default

    Carlos hit it right on the head. A variable is the way to go. I have the 1.25 inch version of the Orion variable polarizing filter. I actually bought mine used off of AstroMart. You can get the details here though:

    Orion Variable Polarizing Eyepiece Moon Filters
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