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Thread: Short focal EP for refractor 80 f/5

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    Default Short focal EP for refractor 80 f/5



    Hi,

    Short EP 10mm which came with refractor is not quiet good, it gives sharp images in and around center. So I want to buy better one with similar length (10 or 9mm) or maybe two EPs, the other about 6mm.

    I made some research and found some good opinions about EPs skywatcher WA 66 9 mm (Starguider) and WA 66 6 mm when used especially in such short f-number telescopes as mine, and they are quite cheap. But there are other skywatcher EPs SWA-58 6 mm nad with other lenghts, but sligthly more expansive although having smaller field of view so I suspect that can be better quality and give better images. And also similar in price to the later are Baader Classic Ortho.

    Which ones to choose? Which ones will be good for f/5 telescope (give sharp image in as much field)?

    Greg

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    Default Re: Short focal EP for refractor 80 f/5

    Definitely Baader Classic Ortho (BCO)! They will give the best image quality (sharpness and contrast).

    Skywatcher WA 66 will have wider field of view and better eye relief, but in terms of image quality much worse than BCO.

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    Default Re: Short focal EP for refractor 80 f/5

    I had a set of the Skywatcher 66° eyepieces before and returned them in short order. A decent Plossl will outperform them though with only a 50° AFOV.
    The Vixen NPL (Plossl) would be a good eyepiece. https://www.teleskop-express.de/shop...tro/Vixen.html
    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"
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    Amici prism, 2" Stellarvue Dielectric, 2" TeleVue Everbrite
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    Default Re: Short focal EP for refractor 80 f/5

    Hello Greg,

    if you have access to the eBay in Germany, try it, they offer a mass of high end EPs for less money.

    Best,

    JG
    Binoculars: Leica Ultravid 7x42, 8x42HD; Swarovski EL 8.5x42 Swarovision; Nikon 10x70 Astroluxe; Docter Nobilem 7x50 Porro; Jenoptem 7x50W, 10x50W; BA8: 10.5x70, 15x85; 25x100FB, AsahiPentax 8x40, Refractors: Sky-Watcher 150mm/750mm; Leica APO Televid 82mm (25x-50x WW ASPH); EPs:Baader Classic Orthos; Fujiyama ortho, Leica B WW, ultrawide zoom ASPH, Periplan GF, HC Plan S, L; DOCTER UWA; Wild UW mil; Tele Vue Delos, Nagler Zoom, Plössls; Swarovski SW; Pentax XW; ZEISS diascope B WW T*, Carl Zeiss E-Pl; Hensoldt mil; Filters: Astrodon, Astronomik, Baader (CCD), TS;
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    Default Re: Short focal EP for refractor 80 f/5

    Hi,
    thank you all for advice and sharing experience. I think about first buying BCO 6mm and then going for 10mm.

    There are two similar versions: Baader Classic Ortho and Baader Planetrium Classic Ortho - are any serious differences between these EPs lines and quality of view?

    Greg
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    Default Re: Short focal EP for refractor 80 f/5

    You might want to consider the ES 8.8mm or the 11mm 82° EP. I use the 11mm on my Orion ST80 80mm F/5 quite a bit

    Abb
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    Dob; Orion Apex 102 Mak; Coronado PST. EP's: ES 4.7, 6.7, 11, 18 and 30mm 82° EPs; Baader 24mm 68°; Luminos 15mm 82°; Meade 8-24mm Zoom. Other: CG4+16" Orion Pier Extension; Celestron 20x80 binos etc;

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    Default Re: Short focal EP for refractor 80 f/5

    thank you Abb

    Yes, it will be nice to have such widefield EP. :-) but it is quite different price range and I'm not emotionaly ready yet to buy EP costing almost as much as my telescope with mount :-( . But it is old saying: appetite grows with eating.

    At the beginning I thought that only or main cost of this hobby is cost of a telescope, I was so naive ;-), and now I just started to get used to prices of EP and other accesories but I'm still in the mode of comparing prices to the price of my telescope.

    Greg
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    Default Re: Short focal EP for refractor 80 f/5

    Hey Greg, when I first got into this hobby I too was as you put it "naive" but with time and experience you'll out grow it

    Have fun!
    Abb
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    Dob; Orion Apex 102 Mak; Coronado PST. EP's: ES 4.7, 6.7, 11, 18 and 30mm 82° EPs; Baader 24mm 68°; Luminos 15mm 82°; Meade 8-24mm Zoom. Other: CG4+16" Orion Pier Extension; Celestron 20x80 binos etc;

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    Default Re: Short focal EP for refractor 80 f/5

    Quote Originally Posted by greqmaa View Post
    Hi,
    thank you all for advice and sharing experience. I think about first buying BCO 6mm and then going for 10mm.

    There are two similar versions: Baader Classic Ortho and Baader Planetrium Classic Ortho - are any serious differences between these EPs lines and quality of view?

    Greg
    They are the same eyepiece, Baader and Baader Planetarium are the same manufacturer/ retailer.
    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"
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    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
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    / camera. - Gabrielle

    Ya gotta keep this Apo/
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    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: Short focal EP for refractor 80 f/5

    Quote Originally Posted by greqmaa View Post
    thank you Abb

    Yes, it will be nice to have such widefield EP. :-) but it is quite different price range and I'm not emotionaly ready yet to buy EP costing almost as much as my telescope with mount :-( . But it is old saying: appetite grows with eating.

    At the beginning I thought that only or main cost of this hobby is cost of a telescope, I was so naive ;-), and now I just started to get used to prices of EP and other accesories but I'm still in the mode of comparing prices to the price of my telescope.

    Greg
    The good news is that scopes come and go, but quality EP like BCO stay.
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