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    Default Baader Nebular Filters



    are nebular filters any good , which is the best narrowband or broadband because yet once again i can't locate them only a used one narrowband on ebay for £30.00 is this a bargain i would sooner buy a new on , thanks joe

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    Default

    Hi there, I would only buy from a trusted seller like 365Astronomy

    With narrowband and indeed any filters you have no idea what you are buying. It could simply be red glass or coloured glass and you cannot prove it is false glass, nor maybe even spot the difference in some cases. Also 1,25" filters are quite cheaper than 2" ones.

    Narrowband flters are mainly photographic filters for long exposures, for visual work I would check out the Baader Sky glow filters, UHC and H-alpha ones.
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    Default

    I agree with going with Baader. I picked up a celestron olll on discount at dealer simply on curiosity. All it really does is just dim up everything with a greenish dark tint that is not being emitted from the nebula. Although when there is a dark sky and good seeing that little filter can blow up Orion Nebula(amazing) in my eyepiece.

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    I suggest reading this excellent article regarding this subject authored by David Knisley. It will give you a better understanding of the various filters and there usefulness.

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    Default

    Hello Thegaffer47,

    The Baader 8.5nm OIII filter is an excellent choice on the budget. It is both visual and CCD. Even better is the Astrodon 5nm OIII, but its price plays in another league.
    The Astronomik UHC is maybe the best visual UHC filter on the market, regarding its crisp optical quality, and its long term stability of the layers.

    I am mostly using the Baader 8.5nm OIII, the Astrodon 5nm OIII, and the Astronomik UHC. My other UHC and H-Beta filters find seldom use.

    There are lots of other good filters on the market, for sure, and different users may report different experience.

    Best

    JG
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