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Thread: Looking for the origin of this ES eyepiece

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    Default Looking for the origin of this ES eyepiece



    I bought this 24 mm 82* eyepiece at the RTMC in May for $179. The sales person said it was the same as the current series just not water tight. Out of curiosity and because it is a bit odd looking eyepiece I wanted to look it up on the internet but cannot find a single image that resembles this one. Does anybody know its origin, any references? I used it last night for the first time, it seems fine but the conditions were soggy so after two targets I packed it up.

    IMG_0401 (657x800).jpg

    PS I had to adjust the Alt bearings of my Z12 for this, it is quite heavy but then it was balanced really well.
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    Clear skies, Henk. Telescopes: Carbon fiber ES ED127CF, Zhumell Z12, Coulter Odyssey 10, AT6RC, Venture RX-7, Celestron Skymaster 20x80, Mounts and tripod: AVX, LXD55, Tiltall, Cameras: Canon (SX40, 450D, 350D, ELPH 100HS), Samsung NX100, DIY: Dob and camera barndoor trackers, afocal adapter, foldable Dob base with leveling feet, Az/Alt setting circles, Accessories: Counterweight bar attachment, Plossls, Barlows, Telrad, SSAG, laser collimators (Seben LK1, Z12, Howie Glatter), Cheshire, 2 Orion RACIs 8x50, Software: DSS, ImageMagick, PHD, Nebulosity, Photo Gallery, Gimp, CHDK

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    Default Re: Looking for the origin of this ES eyepiece

    Here is a write up on the eyepiece. For who made it I would lean towards Kunming as this was a major eyepiece supplier for Meade and ES seemed to be using all the same suppliers.
    https://www.cloudynights.com/article...eyepiece-r2404
    Refractors: Antares 105 f/15, Bresser 102 f/13.2, Celestron 102 f/6.5, 150 f/8, Stellarvue 80 f/6.9, TS 102 f/11, Vixen 115 f/7.7
    Mounts: Manfrotto 055PRO, Celestron SLT, Celestron CG-5/ Argo Navis, Vixen SXP Binoculars: Celestron Eyepieces: A-Z

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    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle

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    Default Re: Looking for the origin of this ES eyepiece

    Thank you so much Gabby! I now have a complete review with positive outcome, very nice to have a reference.
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    Clear skies, Henk. Telescopes: Carbon fiber ES ED127CF, Zhumell Z12, Coulter Odyssey 10, AT6RC, Venture RX-7, Celestron Skymaster 20x80, Mounts and tripod: AVX, LXD55, Tiltall, Cameras: Canon (SX40, 450D, 350D, ELPH 100HS), Samsung NX100, DIY: Dob and camera barndoor trackers, afocal adapter, foldable Dob base with leveling feet, Az/Alt setting circles, Accessories: Counterweight bar attachment, Plossls, Barlows, Telrad, SSAG, laser collimators (Seben LK1, Z12, Howie Glatter), Cheshire, 2 Orion RACIs 8x50, Software: DSS, ImageMagick, PHD, Nebulosity, Photo Gallery, Gimp, CHDK

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    Default Re: Looking for the origin of this ES eyepiece

    Quote Originally Posted by CamelHat View Post
    PS I had to adjust the Alt bearings of my Z12 for this, it is quite heavy but then it was balanced really well.
    That's not an eyepiece lol

    https://explorescientificusa.com/col...ducts/100-30mm

    Weighs nearly 5.5 pounds. My mount would have a stroke if I ever tried to use it
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    Default Re: Looking for the origin of this ES eyepiece

    kingclinton likes this.
    Refractors: Antares 105 f/15, Bresser 102 f/13.2, Celestron 102 f/6.5, 150 f/8, Stellarvue 80 f/6.9, TS 102 f/11, Vixen 115 f/7.7
    Mounts: Manfrotto 055PRO, Celestron SLT, Celestron CG-5/ Argo Navis, Vixen SXP Binoculars: Celestron Eyepieces: A-Z

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    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle

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    Default Re: Looking for the origin of this ES eyepiece

    This wide eye cup-like device also made the eyepiece somewhat broader than it probably needed to be (it is *not removable*). Indeed, just to look into the eyepiece required a slight sideways turn of the head. With the limited accommodation we needed for viewing and the mechanical complications of making this adjustable eye cup, one has to wonder why something this bulky was put on the eyepiece in the first place.

    I thought the same thing the first time I used my 20mm Meade after I got it. After repeated use, I actually prefer this now to a more traditional eyecup, there is more surface to rest against and I think it is a lot more comfortable, especially on the 1.25 EP's that have this twist-up.
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    Default Re: Looking for the origin of this ES eyepiece

    Congrats on the new old glass! How are the views in your Z12?
    Scopes: Celestron: 8" SCT F10 & Omni 150R F5 Achro; ES: 127mm CF F7.5 APO. Mounts: ES Twilight I, Bresser EXOS2, SW SkyTee2. Binos: Orion 10x50, Celestron 8x42. EPs: TeleVue: Plossls 8-to-40mm, 2x-3x barlows; ES: 82o 4.7-to-11mm & 68o 20-24mm; Baader: BCO 6-10-18mm & Aspheric 31-36mm; EO: 12.5-18mm Orthos; Meade: 5000 UWA 14-18mm; Gary Russell: 56mm Plossl; Celestron: X-Cel LX set, Luminos 15mm; GSO SV 30-42mm. Filters: Lumicon: OIII, H-beta; Baader: UHC-S, M&SG, CB; Orion: UltraBlock, SG; DGM: NPB. DSO tally: 876 (H400-1: 400, H400-2: 120, H300-3: 26; M110: 110, S110: 64). Doubles: 417, Comets: 5
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    Default Re: Looking for the origin of this ES eyepiece

    Quote Originally Posted by Bigzmey View Post
    Congrats on the new old glass! How are the views in your Z12?
    The stars are pinpoint with that eyepiece but they were not bad with the standard Z12 30 mm either. If your question was about the Z12 by itself, that is simply a super scope.

    I think you are right about the "new old glass". That review was from 2010 and I found a warranty form in the box that started with a line about refurbished equipment. So maybe it was a refurbished old eyepiece. But it is a pretty good eyepiece certainly for the price according to the review so I am happy.

    I got that eyepiece because of all the rumors that a good eyepiece can make such a difference. Have I seen that? Not yet. Then again, the viewing was pretty poor last night so I have to give it another try.

    Also, I did not check the collimation. The Z12 usually does not need that and even my collapsible conversion seems to maintain that tradition.

    So I had to up the Alt bearings by an inch or so to balance the scope but that's OK, I think this will be the only eyepiece I will use from here on. Until now it was the Z12 30 mm, going to 9 mm makes everything less visible than it is already.
    10538 likes this.
    Clear skies, Henk. Telescopes: Carbon fiber ES ED127CF, Zhumell Z12, Coulter Odyssey 10, AT6RC, Venture RX-7, Celestron Skymaster 20x80, Mounts and tripod: AVX, LXD55, Tiltall, Cameras: Canon (SX40, 450D, 350D, ELPH 100HS), Samsung NX100, DIY: Dob and camera barndoor trackers, afocal adapter, foldable Dob base with leveling feet, Az/Alt setting circles, Accessories: Counterweight bar attachment, Plossls, Barlows, Telrad, SSAG, laser collimators (Seben LK1, Z12, Howie Glatter), Cheshire, 2 Orion RACIs 8x50, Software: DSS, ImageMagick, PHD, Nebulosity, Photo Gallery, Gimp, CHDK

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    Default Re: Looking for the origin of this ES eyepiece

    There are many threads on several forums about "de-cloaking" this style of eyepiece. It is a subjective preference for some and others are looking for weight reduction or narrowing the outer shroud for use in a bino-viewer. You live without an eyecup unless you fashion something for it. The ES is optically the same as the Meade UWA with a different cosmetic treatment on the shroud. They were more expensive than the regular eyecup style casing so sales numbers ultimately decided the outcome and the shrouded style was discontinued. Here is an example of a slight styling variation on the same shroud and a side by side of the 6.7mm Meade and ES clearly showing the family resemblance. The last image is a before, during, and after sequence of a Meade version of the 24mm "de-cloaking". The process removes about 5 ounces so that is not a huge gain, but it clearly makes the critical difference for bino-viewing.
    ES 24.jpg ES and Meade 6pt7.jpg Meade 24 1.jpg
    Last edited by Trombatissimo; 10-12-2017 at 11:13 PM.
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    Default Re: Looking for the origin of this ES eyepiece

    Quote Originally Posted by CamelHat View Post
    The stars are pinpoint with that eyepiece but they were not bad with the standard Z12 30 mm either. If your question was about the Z12 by itself, that is simply a super scope.

    I think you are right about the "new old glass". That review was from 2010 and I found a warranty form in the box that started with a line about refurbished equipment. So maybe it was a refurbished old eyepiece. But it is a pretty good eyepiece certainly for the price according to the review so I am happy.

    I got that eyepiece because of all the rumors that a good eyepiece can make such a difference. Have I seen that? Not yet. Then again, the viewing was pretty poor last night so I have to give it another try.

    Also, I did not check the collimation. The Z12 usually does not need that and even my collapsible conversion seems to maintain that tradition.

    So I had to up the Alt bearings by an inch or so to balance the scope but that's OK, I think this will be the only eyepiece I will use from here on. Until now it was the Z12 30 mm, going to 9 mm makes everything less visible than it is already.
    This design has been out of production for a few years. In any case, used or new old stock, you got nice EP for a good price. While on axes sharpness should be similar in ES82 and SV 30mm, ES82 will give you wider FOV (82 vs ~70 deg) and should have better coating and finishes resulting in better contrast and light transmittance.
    Scopes: Celestron: 8" SCT F10 & Omni 150R F5 Achro; ES: 127mm CF F7.5 APO. Mounts: ES Twilight I, Bresser EXOS2, SW SkyTee2. Binos: Orion 10x50, Celestron 8x42. EPs: TeleVue: Plossls 8-to-40mm, 2x-3x barlows; ES: 82o 4.7-to-11mm & 68o 20-24mm; Baader: BCO 6-10-18mm & Aspheric 31-36mm; EO: 12.5-18mm Orthos; Meade: 5000 UWA 14-18mm; Gary Russell: 56mm Plossl; Celestron: X-Cel LX set, Luminos 15mm; GSO SV 30-42mm. Filters: Lumicon: OIII, H-beta; Baader: UHC-S, M&SG, CB; Orion: UltraBlock, SG; DGM: NPB. DSO tally: 876 (H400-1: 400, H400-2: 120, H300-3: 26; M110: 110, S110: 64). Doubles: 417, Comets: 5
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