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Thread: Now why the heck did I go and do that for?

  1. #11
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    Default Re: Now why the heck did I go and do that for?



    Quote Originally Posted by not_Fritz_Argelander View Post
    A good filter problem I'd say. One could have much worse filter problems.... For some reason the color orange comes to mind......
    Come to think of it, I have a couple of orange filters (Wratten #21, Baader Orange 570nm). They're really good for daylight lunar viewing, although with my slight tritanopes colour blindness they could both be red for all I know lol.
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    Default Re: Now why the heck did I go and do that for?

    OK now Shorty-if you stacked up all those filters would you have some wondrous narrow band filter such that you could not see a damned thing through them?

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  3. #13
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    Default Re: Now why the heck did I go and do that for?

    Quote Originally Posted by goldstar View Post
    OK now Shorty-if you stacked up all those filters would you have some wondrous narrow band filter such that you could not see a damned thing through them?
    Not so fast! How else would you visually detect Dark Matter?

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    Default Re: Now why the heck did I go and do that for?

    Quote Originally Posted by SpyderwerX View Post
    Because one can never have too many EP's.
    ... or telescopes... or binoculars...

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    Default Re: Now why the heck did I go and do that for?

    Quote Originally Posted by goldstar View Post
    OK now Shorty-if you stacked up all those filters would you have some wondrous narrow band filter such that you could not see a damned thing through them?
    It might be worth a try. What I really need is a cloud filter lol.
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    Default Re: Now why the heck did I go and do that for?

    I think my next acquisition may be the Baader 8.5nm Oiii. My Astronomik is ~15nm and kinda want to try something a bit more aggressive.
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  8. #17
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    Default Re: Now why the heck did I go and do that for?

    Quote Originally Posted by SpyderwerX View Post
    I think my next acquisition may be the Baader 8.5nm Oiii. My Astronomik is ~15nm and kinda want to try something a bit more aggressive.
    Since my current site is fairly dark and LP free I'm finding that only the aggressive filters pay off well.
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    Default Re: Now why the heck did I go and do that for?

    Quote Originally Posted by SpyderwerX View Post
    I think my next acquisition may be the Baader 8.5nm Oiii. My Astronomik is ~15nm and kinda want to try something a bit more aggressive.
    Hello Frankie,

    I find the Baader visual 10nm OIII even better, I mean when used on the binoculars and on my 6" achro.
    Through this filter, the Huygenian Region in the Great Orion Nebula M42 blinds my eyes, the North America Nebula pops up, and some Wolf-Rayet nebulae become unexpectedly visible, no need to use the 12" or 16" Dobs.
    Also the forgotten stars nursery NGC7538, far away in the Perseus Spiral Arm, shines through this filter like a hell.

    Years ago, when I have mounted a pair of this filters on a crappy 9x63 bino, the M42 has shown a pale green color,
    but the nearby stars have been green as well, so I don't know if it counts like a nebula in color.

    But you will find the Baader 8.5nm OIII a great performer anyway.

    Best,

    JG
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    Default Re: Now why the heck did I go and do that for?

    Quote Originally Posted by j.gardavsky View Post
    Hello Frankie,

    I find the Baader visual 10nm OIII even better, I mean when used on the binoculars and on my 6" achro.
    Through this filter, the Huygenian Region in the Great Orion Nebula M42 blinds my eyes, the North America Nebula pops up, and some Wolf-Rayet nebulae become unexpectedly visible, no need to use the 12" or 16" Dobs.
    Also the forgotten stars nursery NGC7538, far away in the Perseus Spiral Arm, shines through this filter like a hell.

    Years ago, when I have mounted a pair of this filters on a crappy 9x63 bino, the M42 has shown a pale green color,
    but the nearby stars have been green as well, so I don't know if it counts like a nebula in color.

    But you will find the Baader 8.5nm OIII a great performer anyway.

    Best,

    JG
    Thank you, JG! Very useful observational information. My primary usage will be in the 11" SCT, would you think the 10nm to show more detail as apposed to the 8.5 in the given aperture?
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  13. #20
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    Default Re: Now why the heck did I go and do that for?

    Quote Originally Posted by SpyderwerX View Post
    Thank you, JG! Very useful observational information. My primary usage will be in the 11" SCT, would you think the 10nm to show more detail as apposed to the 8.5 in the given aperture?
    Hello Frankie,

    with the Baader 8.5nm OIII filter (for the fast optics), being centered on 501nm with a pretty slim pass-band, this filter will suppress the second line (495.9 nm) in the OIII doublet, so it will deliver more contrast on the fine details, but less light.

    However, with the 11" SCT you have enough aperture to compensate for the light loss, so I can't see a problem.
    An alternative to that filter is the Astrodon 5nm OIII, but for about 3 times as much cost.

    If you are on good terms with some of the vendors, then ask for the both filters (8.5nm and 10nm), to return one of them after a test. Or keep the both filters for some reduced price.

    Hoping this helps,

    JG
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