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    Default Is OPT a good brand eyepiece?



    I found this 40mm eyepiece online and wondered if since the price is so low, how good could it actually be? If I buy a 40mm EP, this would be the one eyepiece I'd usually use to find stuff. I don't want it to be a PoS. Any reviews on this brand?
    Celestron Astromaster 130eq - 130mm f/5 Newtonian on an equatorial mount. Viewing from New York, USA

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    Default

    Hey Smoke,
    from what I can tell they are GSO-made eyepieces just like mine. The store just slaps a logo on them.

    They are quite good for the price, especially the super-view plossls however you can find them a bit cheaper than even that price. For my 2" wide-views I paid about $40 US including tax, and the 1.25" superwide plossls were about $30-35 US. Not sure if you can find them at that price though in the US.

    cheers
    Name: Gus OTAs: ED 100 PRO refractor, Orion ST80 (not the CF), 8" Dob stuck in Canada Mounts:HEQ5PRO Synscan mount, Manfrotto Tripod CAMS: Guidecam Philips SPC900 webcams (4), Canon unmodded-450D DSLR

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  3. #3
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    what is GSO?
    Celestron Astromaster 130eq - 130mm f/5 Newtonian on an equatorial mount. Viewing from New York, USA

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    Default

    Meade 16" LightBridge; Celestron G-8N Bird-Jones/motorized EQ5;
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    Default

    Yes. that is exactly what it is. GSO lists OPT as a dealer. So they're just ok? I just got a few new medium to high power Meade 4000 eyepieces and when I look through them I say Wow, this is nice! If this won't have the a similar effect I think I'll just hold off till I can afford a better one.
    Celestron Astromaster 130eq - 130mm f/5 Newtonian on an equatorial mount. Viewing from New York, USA

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    Default

    look into Baader Hyperions. to this day I am still impressed "wowed" everytime I look through the ep. . . .
    Leith
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    Aw Nodgiles... You got me drooling over this
    Celestron Astromaster 130eq - 130mm f/5 Newtonian on an equatorial mount. Viewing from New York, USA

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    Default

    36mm is a bit much. The great thing about the Baaders is that they have a detachable end converting it from a 1.25 to 2inch EP/ Detaching the end gives you 2 EP's in one. add a barlow and you get 4 for the price of one. For example, my 21mm at 1.25 is a 32mm at 2" giving me a 10.5 with a barlow at 1.25 and a 16mm barlowed at 2". Theres a great thread, about 4-5 pages long where we discussed Baaders. Read through this, very informative Baader Planetarium Hyperion
    Leith
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    Default

    i read most of that thread, it kinda got off topic and didn't answer the question i have:
    since my scope is a 1.25" i can't use that 2" option mentioned on the 21mm. The 36mm I linked, is that 36mm for 1.25" AND 2"? I don't wanna get it to find out it's like 23mm when the 1.25" barrel is on
    Last edited by smokesha; 09-18-2009 at 09:15 AM.
    Celestron Astromaster 130eq - 130mm f/5 Newtonian on an equatorial mount. Viewing from New York, USA

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    Default

    Agena Astro carries the GSO Plossls for a very good price. And unless I'm mistaken, the Meade series 4000 Plossls are actually made by GSO as well. They are very good EP's and offer excellent value. Owl Astronomy also carries some very good Plossl EP's for a bargain price. I beleive theirs are also made by GSO (or at least used to be, either way they are still good) and have about the best price to be found.

    Also, the Hyperion EP's are the stated FL with both the 1.25" and 2" barrells in place. However, there is a limit to the max FOV you will have with a 1.25" EP. For example, in Plossls, the 32mm and 40mm FL both give about the same FOV, but the image in the 40mm will be a tad brighter due to the larger exit pupil (up to a point depending upon your scope and your eyes).
    Craig
    Last edited by caheaton; 09-18-2009 at 03:27 PM.

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