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Thread: Barlow advice.

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    Default Barlow advice.



    I have a 2x barlow but I'm looking for a bit more magnification. Is a 5x too much for a 114mm x 900mm? would a 3x be a better choice? Can I stack a 3x and a 2x ? I will be buying a t-threaded barlow and really only be using it for imaging.

    Thanks for any advice.
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    Default Re: Barlow advice.

    What type of Imaging are you wanting to do ??
    And what is bothering you about your current Images ??

    Also, what Mount is being used under your Scopes ??

    These Answers will help with any specific "Barlow Advice".

    But for DSOs, the general advice is DON'T DO IT... Any change in Image Scale (magnification) is at the cost of multiplying the Focal Length and therefore the Exposure Time needed...
    It's better to simply Crop More Tightly your existing Images, and resize the Output to suit your audience.
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    Default Re: Barlow advice.

    Yes, this barlow would be used for planetary imaging where exposure time isn't really a concern. I am using an altaz GOTO but I have figured out a way to keep it pretty stable for planetary videos. Re-sizing doesn't add detail to the capture, I'm hoping an increase in magnification will.
    Celestron Advanced VX 6” Newtonian, Celestron 114mm powerseeker, Meade 90mm refractor.
    Canon 6D, Canon XSi Self Modded, 2X Antares Barlow, 3X Antares Barlow
    Canon 70-200mm f4L, Rokinon 14mm f2.8, Canon 50mm 1.8, iOptron Skytracker
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    Default Re: Barlow advice.

    Get the televue 5x barlow, it is awesome and reasonably priced. the cheaper GSO 5x apo barlow suffers from ghosting pretty bad, but the telvue is really great, especially for planetary work.
    - Wes
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