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Thread: A little extra oomph...

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    Default A little extra oomph...



    So my primary observing targets of choice are galaxies, and the tougher they are the better.

    My hunter/killer eyepieces of choice are my ES 82º 18mm and 11mm. That 11mm is my goto eyepiece for faint fuzzy observing. It just does everything right for my 12" dob, my eye, and the sky from my backyard.

    However, I've been considering adding another tool to the arsenal to help pull out the really tough galaxies a little better, something perhaps with a little less glass in it. And I'm hearing that an ortho may fit the bill with this.

    Thus, I'm consider the 10mm Baader Classic Ortho here: Baader 1.25" Classic Orthoscopic Eyepiece - 10mm # BCO-10 2954110

    But then there is this one: Kokusai Kohki 1.25" Fujiyama HD-OR Orthoscopic Eyepiece (Japan) - 9mm

    Kokusai Kohki also has a 12.5mm.

    Right now, I'm leaning toward the Baader. Does anyone have any recommendations of one over the other? Other options to consider?
    Bryan
    Scopes: Apertura AD12 f/5; Celestron C6-R f/8; ES AR127 f/6.4; ES AR127 f/9.4; Stellarvue SV102T f/7; ES AR102 f/9.8; iOptron MC90 f/13.3; Orion ST80A f/5; Celestron Premium 80 f/11.4; Celestron C80 f/11.4; Unitron Model 142 f/16; Meade NG60 f/10
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    Eyepieces: GSO Super Plössl 40mm, 32mm, 15mm, 9mm; ES 82° Series; GSO Superview 30mm; Celestron Plössl 26mm, 20mm; ES 70° 25mm; ES Plössl 25mm; Vite Aspheric 23mm, 10mm, 4mm; Orion Expanse 20mm, 9mm; KK Ortho 18mm, 12.5mm; Bresser 70° 15mm; Coulter Optical 12.5mm; BCO 10mm; ES 62° 9mm; Zhumell Z Series 5mm
    Binoculars: Pentax PCF WP II 10×50, Bresser Corvette 10×50, Bresser Hunter 16×50 and 8×40, Garrett Gemini 12×60 LW, Gordon 10×50, Apogee 20×100

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    Default Re: A little extra oomph...

    Both are outstanding eyepieces so you would not be disappointed with either.
    The main difference is the AFOV of the two eyepieces.
    Baader played with the field stop location a bit to get the wider FOV and some people find that it gets a bit soft on the edge because of it. (Not a fault, still outstanding)
    I love my Fujiyama though and would not ever consider replacing them unless Zeiss was to re-release the ZOA II again... maybe
    Both will give you tack sharp views though so it is a bit like asking who is the better guitarist Mark Knofler or David Gilmour?
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    Amici prism, 2" Stellarvue Dielectric, 2" TeleVue Everbrite
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    Default Re: A little extra oomph...

    BCOs work great for me, not just on picking faint stuff, but also on splitting difficult doubles and planetary observing.

    In my SCT 18mm BCO is just right for galaxies, giving 1.8mm exit pupil and 113x power. But for your DOB 10mm BCO (2.0mm EP and 150x) should be better match.

    I am sure HD-OR are great EPs, but 42 deg FOV in a manual scope will make harder to navigate. Even with BCO's 52 degrees things move fast.

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    Default Re: A little extra oomph...

    Another option is to check used market and see what's available. I picked my BCO set used for a good price and can't be happier.

    I just did a quick search and KK Fujiyama HD-OR 9mm and 12.5mm available for $70 each, shipped on Astromart.com

    You can test those on galaxies and tell us
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    Default Re: A little extra oomph...

    I've got the similar Hutech HD in the 25mm... i can say that they are very well built and incredibly sharp. The BCO is comfortable and has great optics. I doubt that there's that much to choose between them in capability and transmission - it may come down to which has the more optimal exit pupil in your scope for these objects. If you can get a decent price then perhaps the 9mm AND the 12.5mm
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    Default Re: A little extra oomph...

    I can't comment on the Fujiyama but I use my 6mm BCO with my 1200mm vintage refractor all the time and recently on Jupiter. It's a really great eyepiece for the price. You have to get in close but it's sharp!
    My eyes
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    Default Re: A little extra oomph...

    Bryan,

    My knowledge of different eyepiece designs is limited so I'm trying to understand why you'd want a 10mm ortho when you already have an 11mm ES 82º?
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    Default Re: A little extra oomph...

    Quote Originally Posted by rickg18704 View Post
    Bryan,

    My knowledge of different eyepiece designs is limited so I'm trying to understand why you'd want a 10mm ortho when you already have an 11mm ES 82º?
    Hi Rick! In this case, it's not about the magnification, AFOV, etc. I'm interested mainly in gaining a little extra contrast to help with really faint stuff. I'm assuming a little less glass can facilitate this, and orthos, from what I've read, are know for their nice constrasty views.

    This should prove helpful as I continue my pursuit of the Herschel 2500 and hopefully be helpful with digging out the stuff lower down toward my southern horizon.

    So that's my thinking on this.
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    Bryan
    Scopes: Apertura AD12 f/5; Celestron C6-R f/8; ES AR127 f/6.4; ES AR127 f/9.4; Stellarvue SV102T f/7; ES AR102 f/9.8; iOptron MC90 f/13.3; Orion ST80A f/5; Celestron Premium 80 f/11.4; Celestron C80 f/11.4; Unitron Model 142 f/16; Meade NG60 f/10
    Mounts: Celestron AVX; Bresser EXOS-2; ES Twilight I; ES Twilight II; iOptron Cube-G; AZ3/wood tripod; Vixen Polaris
    Eyepieces: GSO Super Plössl 40mm, 32mm, 15mm, 9mm; ES 82° Series; GSO Superview 30mm; Celestron Plössl 26mm, 20mm; ES 70° 25mm; ES Plössl 25mm; Vite Aspheric 23mm, 10mm, 4mm; Orion Expanse 20mm, 9mm; KK Ortho 18mm, 12.5mm; Bresser 70° 15mm; Coulter Optical 12.5mm; BCO 10mm; ES 62° 9mm; Zhumell Z Series 5mm
    Binoculars: Pentax PCF WP II 10×50, Bresser Corvette 10×50, Bresser Hunter 16×50 and 8×40, Garrett Gemini 12×60 LW, Gordon 10×50, Apogee 20×100

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    Default Re: A little extra oomph...

    Quote Originally Posted by Phyllisshend View Post
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    Takes cajones to spam a moderator's thread.
    Bryan
    Scopes: Apertura AD12 f/5; Celestron C6-R f/8; ES AR127 f/6.4; ES AR127 f/9.4; Stellarvue SV102T f/7; ES AR102 f/9.8; iOptron MC90 f/13.3; Orion ST80A f/5; Celestron Premium 80 f/11.4; Celestron C80 f/11.4; Unitron Model 142 f/16; Meade NG60 f/10
    Mounts: Celestron AVX; Bresser EXOS-2; ES Twilight I; ES Twilight II; iOptron Cube-G; AZ3/wood tripod; Vixen Polaris
    Eyepieces: GSO Super Plössl 40mm, 32mm, 15mm, 9mm; ES 82° Series; GSO Superview 30mm; Celestron Plössl 26mm, 20mm; ES 70° 25mm; ES Plössl 25mm; Vite Aspheric 23mm, 10mm, 4mm; Orion Expanse 20mm, 9mm; KK Ortho 18mm, 12.5mm; Bresser 70° 15mm; Coulter Optical 12.5mm; BCO 10mm; ES 62° 9mm; Zhumell Z Series 5mm
    Binoculars: Pentax PCF WP II 10×50, Bresser Corvette 10×50, Bresser Hunter 16×50 and 8×40, Garrett Gemini 12×60 LW, Gordon 10×50, Apogee 20×100

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    Default Re: A little extra oomph...

    Quote Originally Posted by rickg18704 View Post
    Bryan,

    My knowledge of different eyepiece designs is limited so I'm trying to understand why you'd want a 10mm ortho when you already have an 11mm ES 82º?
    Numerous times the ES82 11mm has failed to pick up a DSO of which is at the limit of view. It's a great eyepiece but no match for the BCO for optical purity.

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