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Thread: 2 to 1.25 televue eyepiece adapter - advice needed

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    Default 2 to 1.25 televue eyepiece adapter - advice needed



    hello everyone. I hope everyone here had a great holidays and is enjoying the new year. I am looking at the televue adapters as per the televue website : Tele Vue Optics: 2"-1¼" Adapters

    Since they come in different variants in terms of weight and height, I am not sure which one would best suit my needs.

    I plan to use it on a sub F4.5 telescope which means that the telescope has been designed to be used with a coma corrector. However, the adapter I am buying is for when I will be using the telescope without a coma corrector , i.e for high magnification and planetary viewing and also for using my passive collimation tool, i.e my celestron 1.25 cheshire .

    That being said, I am looking for info on the televue adapters in terms of tolerance and also the ability to focus with all eyepieces. The weight consideration should be less of a factor since I have a couple of counterweights. But I still do not want something too light.

    Since the telescope will be a sub 4.5 and does not have a draw tube, I would be inclined to think that the high hat model would suit me when not using a coma corrector. Therefore I am deciding between the hi hat satin, regular hi hat and the hi hat brass/equalizer

    Other suggestions are much appreciated

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    Default Re: 2 to 1.25 televue eyepiece adapter - advice needed

    If you do not need the extra weight of the equalizer it would not be a good choice. It weighs 1lb to help balance between using heavy eyepieces. They work great in refractors if you use a lot of 1.25" eyepieces so you can push the scope up further in the cradle rings.
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    Default Re: 2 to 1.25 televue eyepiece adapter - advice needed

    ah ok.. yes thats true, I think the brass one might be a bit too heavy. There are two models. One with a high hat and one without... Not sure which one I should go with...

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    Default Re: 2 to 1.25 televue eyepiece adapter - advice needed

    The hi-hat is fairly standard as adapters go, the thinner one is for if you have issues getting some eyepieces to focus. Sometimes you just need the extra 1-2mm inward to come to focus.
    Refractors: Antares 105 f/15, Celestron 150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, UR 70 f/10, Vixen SD115s f/7.7
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    Default Re: 2 to 1.25 televue eyepiece adapter - advice needed

    I think I will go ahead and pull the trigger on the 2 to 1.25 high hat televue adapter.

    Just being curious, does anyone have any experience with the howie glatter parallizer ? More specifically, does anyone have experience using it with explore scientific 82 or 68 eyepieces ?

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    Default Re: 2 to 1.25 televue eyepiece adapter - advice needed

    Quote Originally Posted by mruhomau View Post
    I think I will go ahead and pull the trigger on the 2 to 1.25 high hat televue adapter.

    Just being curious, does anyone have any experience with the howie glatter parallizer ? More specifically, does anyone have experience using it with explore scientific 82 or 68 eyepieces ?
    PhilipLangley will be your huckleberry on the Parallizer. He uses his, I believe, with the ES eyepieces. I've never tried one myself.
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    Default Re: 2 to 1.25 televue eyepiece adapter - advice needed

    The hi-hat is designed primarily for use with diagonals where you may use a Barlow that would otherwise touch the mirror without that extension. Obviously you can use it with your reflector but take care that the distance between the coma corrector and eyepiece can be still be reached with the extra extension.

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    Default Re: 2 to 1.25 televue eyepiece adapter - advice needed

    I already placed the order with the high hat.

    " Obviously you can use it with your reflector but take care that the distance between the coma corrector and eyepiece can be still be reached with the extra extension. "

    DaveSellars, I did not quite understand this part of your comment. Did you mean in the context when the high hat is being used with a coma corrector ? Could you kindly clarify . thanks !

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    Default Re: 2 to 1.25 televue eyepiece adapter - advice needed

    Just to further clarify . I am planning to use the high hat when I am not using a coma corrector. When using a coma corrector, I will use the adapter that comes with it.

    Let me know if you guys see any concerns with this

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    Default Re: 2 to 1.25 televue eyepiece adapter - advice needed

    Quote Originally Posted by mruhomau View Post
    I already placed the order with the high hat.

    " Obviously you can use it with your reflector but take care that the distance between the coma corrector and eyepiece can be still be reached with the extra extension. "

    DaveSellars, I did not quite understand this part of your comment. Did you mean in the context when the high hat is being used with a coma corrector ? Could you kindly clarify . thanks !
    Yes, with the hi-hat and coma corrector. The reason I mentioned it was because the coma corrector works by being a set distance to the eyepiece field stop. the coma corrector (depending which one you have) then has to be adjusted either by extension rings or for example with the Explore Scientific or Televue Paracorr by twisting it round until it achieves the correct distance so introducing further optical length with the hi-hat may prove a problem if the coma corrector is like that of the Televue Paracorr as you could easily find you're not able to achieve the correct distance as you reach the limit of the coma corrector.

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