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Thread: A New Masuyama 1.25" eyepiece

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    Default A New Masuyama 1.25" eyepiece



    I am quite surprised at the lack of promotion for this new focal length.
    Many people have been waiting for a long time for them to start releasing 1.25" eyepieces again.

    https://digiborg.wordpress.com/2017/...masuyama-16mm/

    It claims it is available now at Hutech (normally do not sell Masuyama) but there is no mention of it on their website nor on the KK (Japan) website either.
    Agena Astro is also not showing anything but the 2" in their inventory.

    If I find any more information about the eyepiece I will post it.
    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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    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle
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    Default Re: A New Masuyama 1.25" eyepiece

    Celestron Classic 8, Old Sears 60mm f/15 refractor, Old Edmund Scientific 6 inch F/8 newt, GSO 2" Diag, ES 30mm/70, ES 25mm/70,
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    Default Re: A New Masuyama 1.25" eyepiece

    Thanks, Gabby76 and Scott for the info. The original Masuyama were 50* AFOV as I recall. What's with this 85* afov? New glass materials enabling wider fields?

    Currently austerity measures are in place so my interest though keen must remain theoretical.
    j.gardavsky and Gabby76 like this.

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    Default Re: A New Masuyama 1.25" eyepiece

    Thanks for this announcement, but surprise is not my first reaction. My past experience with Masuyama has been that they follow the Nikon (for astronomy gear) model of marketing - If you really want it, you'll find a way, but we really don't care whether you can get it or not. I expect that their demand from the home market and Europe is greater than their production capability, so North American marketing is simply not a priority. Agena has had these listed "out of stock" for quite awhile.
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    Default Re: A New Masuyama 1.25" eyepiece

    I don't think it's designed to perform in fast scopes. I bet in an SCT or F8 refractor the results are stunning.

    Scott
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    Default Re: A New Masuyama 1.25" eyepiece

    The original 1.25" were "based" on the Zeiss Astroplanokular 50° AFOV @ f/4 and were modified to 52° @ f/7.
    These new 85° AFOV are a bit intriguing. Still follow the original form factor and built for f/7 with the same 2-1-2 format...
    I have only had the opportunity to try the 2" 32mm and 26mm so far.
    I had a brief email exchange with Barry Gooley (KK) last year and he thought they would be bringing out new versions of the original line up starting this year,
    maybe they have decided to go in a different direction and leave the originals alone.
    Last edited by Gabby76; 10-03-2017 at 01:04 AM.
    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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    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle
    Ya gotta keep this Apo/Achro thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)
    Refractors kick arse precisely because they don't hide behind excuses. That is, they have no obstructions to hide behind. - Jon Isaacs (CN)

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    Default Re: A New Masuyama 1.25" eyepiece

    Quote Originally Posted by Trombatissimo View Post
    Thanks for this announcement, but surprise is not my first reaction. My past experience with Masuyama has been that they follow the Nikon (for astronomy gear) model of marketing - If you really want it, you'll find a way, but we really don't care whether you can get it or not. I expect that their demand from the home market and Europe is greater than their production capability, so North American marketing is simply not a priority. Agena has had these listed "out of stock" for quite awhile.
    KK Japan is the normal distributor of the Masuyama so I was a bit surprised when there was no information on either the English or Japanese webpages about this new arrival.
    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
    Mounts: Celestron SLT w/ pier mod & EQ-3 tripod, Celestron hypertuned CG-5 w/ tracking motor & Argo Navis, Manfrotto 028B w/ Stellarvue M2C, Manfrotto 055PRO w/ 128RC, TAL-1 HD EQ, Vixen SXP w/ HAL-130 SXG & half pier
    Diagonals: 2" Astro-Physics MaxBright, 2" Zeiss/ Baader prism, 2" Baader Herschel Wedge (Photo Version), 2" Orion Amici prism, 2" Stellarvue Dielectric, 2" TeleVue Everbrite
    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
    Ya gotta keep this Apo/Achro thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)
    Refractors kick arse precisely because they don't hide behind excuses. That is, they have no obstructions to hide behind. - Jon Isaacs (CN)

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    Default Re: A New Masuyama 1.25" eyepiece

    Quote Originally Posted by not_Fritz_Argelander View Post
    Thanks, Gabby76 and Scott for the info. The original Masuyama were 50* AFOV as I recall. What's with this 85* afov? New glass materials enabling wider fields?
    Article I read a little while ago suggested it is the ability to computer design the lens for optimum performance is creating this explosion in FOV rather than improvements in glass technology. Having said that the quality of coatings has see a real leap over the last 5 years
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    Default Re: A New Masuyama 1.25" eyepiece

    Hmmm. :-)
    Mark

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    Default Re: A New Masuyama 1.25" eyepiece

    Quote Originally Posted by MG1692 View Post
    Article I read a little while ago suggested it is the ability to computer design the lens for optimum performance is creating this explosion in FOV rather than improvements in glass technology. Having said that the quality of coatings has see a real leap over the last 5 years
    Indeed! When you think back only a few year ago and an eyepiece that lost 3-5% light transmission was outstanding throughput, now the newer coatings are being measured in 0.0% light loss.
    The new Zeiss barlow is said to only lose a total of 0.2%!!
    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
    Mounts: Celestron SLT w/ pier mod & EQ-3 tripod, Celestron hypertuned CG-5 w/ tracking motor & Argo Navis, Manfrotto 028B w/ Stellarvue M2C, Manfrotto 055PRO w/ 128RC, TAL-1 HD EQ, Vixen SXP w/ HAL-130 SXG & half pier
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    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle
    Ya gotta keep this Apo/Achro thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)
    Refractors kick arse precisely because they don't hide behind excuses. That is, they have no obstructions to hide behind. - Jon Isaacs (CN)

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