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  1. #1
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    Question GSO 2" 42mm Camera Superview vs WO 2" SWAN 40mm



    Both the GSO 2" 42mm Camera Projection Superview and the Williams Optics 2" SWAN 40mm sell for about the same price new.

    In my f/10 ACF GOTO SCT, the Swan yields a slightly larger FOV of 1.44 degrees vs the GSO's 1.35 degrees. I want to use it for widefield DSO's and also during outreach events.

    I've seen Joe's recommendation of the older Superview.

    Can anyone help me decide which eyepiece to order? Or an alternate in the same price range?

    Thanks - and Happy New Year all!
    Scopes: Meade LS-8 ACF, Celestron C80ED on iOptron SmartEQ, Coronado PST, 70 mm Refractor, and 1970's-era Tasco 4.25" reflector. Eyepieces: WO Binoviewer, 40 mm TMB Paragon, 30 mm GSO Superview, 26 mm Meade Super Plossl, 14 mm, 10 mm, 6 mm, and 3 mm Televue Radians, Baader Mk II 8-24 Zoom, 10 mm and 25 mm Celestron SMA, Accessories: Meade Zero Image Shift Motor Focuser & 2" Dielectric Diagonal, 2x Barlow, Rigel Quikfinder, Orion 2" Variable Polarizing Filter, JMI case, LG 8" Portable DVD/media Player for Astronomer Inside, Green Laser Pointer, Celestron Power Tank 17aH. Primary software: Stellarium.

  2. #2
    andyp180's Avatar
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    Default

    i have a gso 2" 68* fov superview.
    it is not the camera projection type however.
    it is superb for wfov views when you consider
    it is classed as a budget ep.certainly performs
    better than the price suggests.
    would a buy another?
    without hesiation.
    clear skies,

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    andy

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  3. #3
    Joe Lalumia's Avatar
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    Default

    I have an 8mm SWAN-- which I hardly ever use-- I cannot speak to the 40mm Swan but the GSO Superview is VERY good for the low price point. You will not be dissatisfied with the GSO.

    GSO 2" SuperView Eyepiece - 42mm
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  4. #4
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    Default

    Thanks, Joe - I was hoping you'd chime in. Do you know of any benefit to the Camera Projection version of the GSO if I'm not anticipating doing any AP?
    Scopes: Meade LS-8 ACF, Celestron C80ED on iOptron SmartEQ, Coronado PST, 70 mm Refractor, and 1970's-era Tasco 4.25" reflector. Eyepieces: WO Binoviewer, 40 mm TMB Paragon, 30 mm GSO Superview, 26 mm Meade Super Plossl, 14 mm, 10 mm, 6 mm, and 3 mm Televue Radians, Baader Mk II 8-24 Zoom, 10 mm and 25 mm Celestron SMA, Accessories: Meade Zero Image Shift Motor Focuser & 2" Dielectric Diagonal, 2x Barlow, Rigel Quikfinder, Orion 2" Variable Polarizing Filter, JMI case, LG 8" Portable DVD/media Player for Astronomer Inside, Green Laser Pointer, Celestron Power Tank 17aH. Primary software: Stellarium.

  5. #5
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    Default

    I got the 40mm SWAN for my omni 120 and have no regrets. Its a fine looking well made hunk of glass. Agena even sent a twist up container for it at no extra cost. As expected it is a little soft around the edges but the useful field is so large it isnt too noticeable. In this price range it is well worth it. Also at the f10 of your scope it should be even better. The Pleiades, M7 and M6 were spectacular among others. Even in my XT10 with 8mm exit pupil I wasnt at all dissappointed although my 30mm is used the most in that scope.

    Enjoy, whatever you choose.

    Eric

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  6. #6
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    Default

    Do you know of any benefit to the Camera Projection version of the GSO if I'm not anticipating doing any AP?
    i have the 32mm 1.25" version.
    if you are not doing ap,there is no benefit that i can see.
    the eye cup screws off to allow a t adapter to be fitted direct
    to the ep,and id had around 50mm of adjustment in the
    sliding body.
    used as normal,it makes a good 32mm aswell though.
    i would imagine the 42mm is the same.
    clear skies,

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  8. #7
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    Default

    Thanks for all your comments - looks like the 42mm non-camera Superview is the winner. Can't wait to get one.

    Happy New Year and Clear Skies!
    Scopes: Meade LS-8 ACF, Celestron C80ED on iOptron SmartEQ, Coronado PST, 70 mm Refractor, and 1970's-era Tasco 4.25" reflector. Eyepieces: WO Binoviewer, 40 mm TMB Paragon, 30 mm GSO Superview, 26 mm Meade Super Plossl, 14 mm, 10 mm, 6 mm, and 3 mm Televue Radians, Baader Mk II 8-24 Zoom, 10 mm and 25 mm Celestron SMA, Accessories: Meade Zero Image Shift Motor Focuser & 2" Dielectric Diagonal, 2x Barlow, Rigel Quikfinder, Orion 2" Variable Polarizing Filter, JMI case, LG 8" Portable DVD/media Player for Astronomer Inside, Green Laser Pointer, Celestron Power Tank 17aH. Primary software: Stellarium.

  9. #8
    Joe Lalumia's Avatar
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    You will be surprised at how good it is for the low cost.
    ETX 125PE, Stellarvue 80mm BV & Televue TelePod tripod,
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  11. #9
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    Default Re: GSO 2" 42mm Camera Superview vs WO 2" SWAN 40mm

    Quote Originally Posted by blueline143 View Post
    I got the 40mm SWAN
    Has the WO SWAN 40mm 72 dergree AFOV eyepiece got a sharp, black field stop (edge to the circle of light that you see when viewing through it) when used "standalone" (just holding it up to the light) ? Or blurred edge (no field stop, uses the barrel as a field stop)?

    Can I remove the rubber eyeguard completely from this WO SWAN 40mm eyepiece fairly easily? And replace it again easily? I tend to remove the rubber eye guards from my other ep's as I wear glasses for severe Astigmatism and I don't like smudging finger grease from the eye guard onto my glasses every time I bump into the rubber eye guard with my glasses.

    I like the sound of the 23mm effective Eye Relief (28mm design Eye Relief) that I hear about for the 40mm SWAN, I am always bumping into my TeleVue 8mm Radian with it's 20mm ER when trying to see the whole field at once, and find the TV 32mm Plossl better in that regard with it's longer ER at 22mm and as a result I almost never bump into when seeing the whole FOV, and my SkyWatcher 28mm Kellner is perfect for it's ER and easy to use with glasses and I never bump into it at all and it's easy to see the whole 56 degree FOV at once. I seem to be unlucky as not only have a got a full dose of the Astronomer's Curse (Astigmatism, 3.5 Diopters of it) but I have somewhat recessed eyes and protruding nose compared to some other people who find the ER on the TV 8mm Radian to be just fine with glasses on, with the outer ring of the ep even raised by 2 clicks!

    Best Regards,

    Alistair G.

  12. #10
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    Default Re: GSO 2" 42mm Camera Superview vs WO 2" SWAN 40mm

    It has a sharp field stop even with the eyeguard up. I always observe with the eyeguard down. I just pulled it up on one side to examine its removability. I was able to slide it up fairly easily but did not take it right off. Can't imagine that it would be that difficult to put it back on. To begin removing it I had to grasp the recessed area on the inside. There is enough space to avoid touching the lense while doing this but you would still want to be careful.

    Eric

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