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Thread: Seeking advice about cheap eyepieces

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    Default Seeking advice about cheap eyepieces



    Hello, I am getting 130p heritage telescope and I would like to buy a small mm eyepiece for planets in the range of 4-6mm (although 4mm sounds a bit too little) as I do not like using barlow.
    These are the cheapest eyepieces I could select from and I'd like advice on which brand is best.

    Omegon 1.25'', 4mm super ploessl eyepiece

    Omegon 1.25'' 6.3mm super ploessl eyepiece

    TS Optics Ploessl eyepiece 4mm 1,25''

    Vixen NPL eyepiece Ploessl 6mm 1.25"

    Out of them all only the Vixen eye piece has some kind of eye relief while only the TS Optics one has fully coated lens (the others are multi coated which I'm under the impression is worse).

    Thanks in advance.

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    Default Re: Seeking advice about cheap eyepieces


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    Default Re: Seeking advice about cheap eyepieces

    The Plossl eyepieces have a eye relief between 75-80% of their focal length.
    The 4mm will be overpowering your scope the majority of the time so I would pass on that one.
    The Vixen 6mm is a good eyepiece.
    The focal ratio of your scope is f/5 so stay above 5mm eyepieces. You are better off using a barlow and longer focal length eyepieces when getting started.
    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
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    / 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: Seeking advice about cheap eyepieces

    The terminology used to describe lens coatings is confusing!

    "Coated" means at least one air-to-glass surface has a single coating (but not all).
    "Fully-coated" means all air-to-glass surfaces have a single coating.
    "Multi-coated" means at least one air-to-glass surface has multiple coatings (but not all).
    "Fully multi-coated means all air-to-glass surfaces have multiple coatings.

    I believe the Vixen NPL Plossls are fully multi-coated. For myself, I'd choose the Vixen 6mm. For this F5 scope, the 4mm EP might be too much.
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    Mary


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    Vixen VMC200L, D=200mm, F=1950, f/9.75; Televue 2" Everbright diagonal. Coronado PST; AstroTech EDT 80mm, F=480, f/6. Mounts: Vixen SXW/Starbook (original); Stellarvue M2C alt-az. Eyepieces: Televue: 55mm Plossl, 22mm Panoptic, 17.3mm Delos, 13mm Nagler, c. 1980, 11mm Plossl, 7mm Nagler; Meade 15mm Super Plossl; VERNONSCOPE 2.4X BARLOW. Binoculars: Leica 8x32 Trinovids, circa 1997;
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    Default Re: Seeking advice about cheap eyepieces

    oops, I see Gabby beat me to some of those thoughts. I must be faster next time!
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    Mary


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    Vixen VMC200L, D=200mm, F=1950, f/9.75; Televue 2" Everbright diagonal. Coronado PST; AstroTech EDT 80mm, F=480, f/6. Mounts: Vixen SXW/Starbook (original); Stellarvue M2C alt-az. Eyepieces: Televue: 55mm Plossl, 22mm Panoptic, 17.3mm Delos, 13mm Nagler, c. 1980, 11mm Plossl, 7mm Nagler; Meade 15mm Super Plossl; VERNONSCOPE 2.4X BARLOW. Binoculars: Leica 8x32 Trinovids, circa 1997;
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    Default Re: Seeking advice about cheap eyepieces

    Do not get to hung up on the terminology used, fully multi coated is excellent but there is nothing wrong with multi coated either.
    Brandon eyepieces are highly regarded and only have a single coating on the eye lens!
    Check out some user reviews if you really want to know how well the eyepiece works
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    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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    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
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    / 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: Seeking advice about cheap eyepieces

    I suggest a 12mm Plossl and 2X Barlow, which will give you the equivalent of a 6mm EP with much better eye relief.
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    David aka Shelldrake
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    (f/5), EQ6-R, AZ3 mounts;
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    mount; Jason 313 60mm refractor (f/15.2, EQ1 mount); Celestron 10x50, 8x56, 15x70 binoculars; Eyepieces: SWA 32mm (2"); 32mm Plossl; 25mm, 18mm, 12mm, 9mm X-Cel LX; 6.7mm ES 82; 5mm X-Cel; Meade 8-24mm Zoom; Orion Shorty 2X
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    Default Re: Seeking advice about cheap eyepieces

    Hello Aurora,

    the Vixen NPL Plössl is fully multicoated, the lens rims are blackened, but at f=6mm the eye relief of 3mm (if this value is correct?) will be too short, see Teleskop-Express: Vixen Plssl NPL 6mm - 1,25" Einsteck Durchmesser - 39202

    Best,

    JG
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    Default Re: Seeking advice about cheap eyepieces

    I have to agree with David and Gabby, a 12mm EP and Barlow is the way to go.

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    Default Re: Seeking advice about cheap eyepieces

    Good grief, I did not realize the ER of the 6mm was so short. I find the 8mm ER of my TeleVue 11mm Plossl to be as short as I'd care for.

    aurora5, can you explain why you don't like a Barlow? Maybe you have used a low-quality one; I don't like those either.
    Mary


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