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Thread: Dakin Magic Barlow advice

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    Default Dakin Magic Barlow advice



    Hi all,

    I mentioned in another thread here I'm considering buying a Vernonscope 1.25X Dakin Magic barlow to fill in the holes in my Tak Abbe line, but would like some feedback first before I order. If anyone has one of these little barlows and done any AB comparisons, I'm really curious of your findings. Specifically, if you have two eyepieces where the barlowed longer f/l matches the shorter f/l, have you compared the barlowed longer f/l to the unbarlowed lower f/l and how the view compares? Also, if anyone has used this barlow on an Abbe, does the barlow degrade the view in anyway?

    Thanks in advance. I'm just on the fence whether to buy this or fill in the holes with something like the DeLites, which would probably make my older eyes happier with their longer eye relief.

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    Default Re: Dakin Magic Barlow advice

    Hello Steve,

    Google finds 2 discussions on this Barlow, but not a real shout-out test.
    All depends on how the Barlow matches with the field lens of the eyepiece.
    Best luck with your purchase, and let us know how it works for your eyepieces,

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    Default Re: Dakin Magic Barlow advice

    Thanks JG. That's what I've been finding too, not much. And the one or two individuals I've read who have posted on owning it, make it really difficult to interpret how "invisible" it really is, and just what order of magnitude of "soft at the edge" they mean. That might or might not be something I would even see, and it could be eyepiece dependent as you say. Hoping an owner, if on this site, will eventually weigh in.

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    Default Re: Dakin Magic Barlow advice

    Well, even though I couldn't get any replies from owners, I decided to get one, and just clicked the buy now button at Agena. I was considering my other option, filling in the gaps and 3mm lower end with some DeLites. So I'd been reading just about every DeLite vs xxx review I could find and was ready to get one of them until I got to one thread somewhere (either CN or Iceinspace) where they compared favorably with my Abbes, but fell just a bit short on ultimate detail on the Moon and planets. And what I have read of the Brandon Dakin barlows says they're pretty much as transparent as you're going to get. So once we ever get some clear skies (and good seeing) and I can get my scope out we'll see how things go.
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    Default Re: Dakin Magic Barlow advice

    LOL I have been playing too much RPG stuff. I read this as "Dark Magic Barlow"
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    Default Re: Dakin Magic Barlow advice

    Gentlemen,

    Thanks for the introduction to this 'sweetie'.

    I have just taken a boo at it and find that it would probably be most desirable in my eyepiece stable.

    One question which, I think that I do know the answer to, but am now looking for confirmation.

    Seeing that the standard 1.25" thread allows the MDB to be screwed onto the nose piece/barrel of a standard 1.25" eyepiece, could it not also be screwed onto the end of some other 3rd party 'shorty' Barlow that is fitted with a crappy el'cheepo Barlow lens-set in a removable cell?

    That is, replace the crappy el'cheepo removable Barlow cell with a MDB cell.

    If so, then in a sense, the x1.25 MDB could, when screwed onto the end of the "shorty", become something like a 1.7x MDB, and the x1.5 MDB could become something like a x2 MDB.

    The 1.25" eyepiece would then be placed into the top socket of the "shorty" Barlow as per usual.

    So, what say you all?
    Last edited by PhilipLangley; 12-18-2016 at 04:18 PM.

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    Default Re: Dakin Magic Barlow advice

    I believe that was one of the questions and discussions that came up in one of the threads I dug through, was how would these fare used with extension tubes to vary the magnification, as it's apparent by the design. Both the 1.25X and 1.5X are in the same size housing and same distance from the eyepiece, so they aren't just re-spec'd versions of the element in the 2.4X barlow. How well will the off-axis performance be at a different spacing between barlow and eyepiece or used (if possible) in the nose of a 1.25" diagonal, etc?

    Seems, just like the information and feedback I was hoping to dig up to my specific questions, there just aren't enough of these in circulation to provide knowledgable or definitive answers yet. I suspect because they're really such a specialized product.
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    Default Re: Dakin Magic Barlow advice

    I know the TMB 1.8x and the long and "shorty" 2x Vixen barlows are that power straight-through with no diagonal in the lightpath. So by using a diagonal you are increasing the power, Vixen rates the standard as 2.6x and the "shorty" 3.3x when used with a 2" diagonal.
    I wonder if other manufacturers design theirs this way also?
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