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  1. #1
    Frank Howe's Avatar
    Frank Howe Guest

    Default Bausch & Lomb Hastings Triplet as Eyepiece?



    I have heard some people recommend hastings triplets for making planetary
    eyepieces.

    The most common brand I can find is B&L. Anyone try one?

    They come in fl from approx. 12.7mm to 37mm.

    Frank

  2. #2
    Jb2269's Avatar
    Jb2269 Guest

    Default Bausch & Lomb Hastings Triplet as Eyepiece?

    Frank,
    I used one many years ago on my Newtonian. Not bad, but it was not coated.
    You might check out this issue before you order one from B&L. BTY, I think the
    new TMB monocentric eyepiece is closely related to the Hastings Triplet.
    Bill Bambrick
    41 N, 73 W, 95 ASL

  3. #3
    Bill Foley's Avatar
    Bill Foley Guest

    Default Bausch & Lomb Hastings Triplet as Eyepiece?

    I think Edmund Scientific was selling triplets, perhaps they still have some.
    I do not know if they were coated. They were fairly expensive.
    Clear, Dark, Steady Skies!
    (And considerate neighbors!!!)


  4. #4
    Rick Steiner's Avatar
    Rick Steiner Guest

    Default Bausch & Lomb Hastings Triplet as Eyepiece?

    I made a 12.5mm eyepiece out of the 20x hastings triplet loupe. It is an
    exceptional performer! Edmund Scientifics occasionally has the hastings
    loupes on sale - I got mine for around $40, did my own machining, and used
    spare parts.

    This is a fantastic planetary eyepiece! It isn't coated, but it doesn't need
    to be. There are no ghosts, except for the dim reflection off my eyeball.
    FOV is very narrow, but it is sharp to the edge at f6. Polish is very good.
    Sharpness is comparable to a 6mm pentax ortho, but contrast is not as good.
    I don't use a field stop, which would provide better baffling and help
    contrast.

    Overall, the Edmund hastings triplet is far superior to the 6mm Intes
    monocentric I used to have. The intes was very soft at f6 (small "sweet
    spot), and had massive reflections. The Edmund is much easier to use.

    Clear Skies,
    Rick

    Frank Howe wrote:



  5. #5
    Rick Steiner's Avatar
    Rick Steiner Guest

    Default Bausch & Lomb Hastings Triplet as Eyepiece?

    I made a 12.5mm eyepiece out of the 20x hastings triplet loupe. It is an
    exceptional performer! Edmund Scientifics occasionally has the hastings
    loupes on sale - I got mine for around $40, did my own machining, and used
    spare parts.

    This is a fantastic planetary eyepiece! It isn't coated, but it doesn't need
    to be. There are no ghosts, except for the dim reflection off my eyeball.
    FOV is very narrow, but it is sharp to the edge at f6. Polish is very good.
    Sharpness is comparable to a 6mm pentax ortho, but contrast is not as good.
    I don't use a field stop, which would provide better baffling and help
    contrast.

    Overall, the Edmund hastings triplet is far superior to the 6mm Intes
    monocentric I used to have. The intes was very soft at f6 (small "sweet
    spot), and had massive reflections. The Edmund is much easier to use.

    Clear Skies,
    Rick

    Frank Howe wrote:



 

 

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