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Thread: Calculating EP focal lengths to build a balanced set

  1. #21
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    Default Re: Calculating EP focal lengths to build a balanced set



    Trying before buying is always a good idea when possible.
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    Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7 Newtonians: Z12 f5 Catadioptrics: VMC110L, Intes MK66 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binocular Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker III, Vixen Porta II, Celestron CG5, Orion Sirius EQG

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    Default Re: Calculating EP focal lengths to build a balanced set

    Quote Originally Posted by Gabby76 View Post
    The TV was just an example
    There are quite a few good eyepieces in that range that are less and finding them used are considerably cheaper.
    If you have a price per eyepiece you are looking at the members can usually point you in the right direction
    I understand and thank you all for the awesome advice. To answer your question Gabby, my ideal price range for EPs is $180 and under each. I’m hoping to get 4-5 EPs in the range of $500-600 but realize I probably will have to go above that.

    In regards to AFOV, I don’t have to have wide field EPs but it would be nice if I could, even if some of them display a bit of dimming or vignetting near the edges. I don’t expect perfection at my price range but naturally, I want the best I can afford. I’d rather have two awesome EPs than a slew of mediocre ones. If that helps at all.
    Oberwerk 11x70 and 15x70 binos
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    GSO 2 Star diagonal
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  3. #23
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    Default Re: Calculating EP focal lengths to build a balanced set

    Quote Originally Posted by JustinG View Post
    I understand and thank you all for the awesome advice. To answer your question Gabby, my ideal price range for EPs is $180 and under each. I’m hoping to get 4-5 EPs in the range of $500-600 but realize I probably will have to go above that.

    In regards to AFOV, I don’t have to have wide field EPs but it would be nice if I could, even if some of them display a bit of dimming or vignetting near the edges. I don’t expect perfection at my price range but naturally, I want the best I can afford. I’d rather have two awesome EPs than a slew of mediocre ones. If that helps at all.
    Justin.... there are some things that are very personal about picking eyepieces and advice from others can't help you with that. The main thing that is completely subjective is desired AFOV. Now I don't get sea sick as some do when I look through an 80 or 100 degree AFOV but I'm a real fuss on pincushion distortion which all wide field eyepieces have. It might not bother you though. For me the 70 degree wide fields are acceptable. The 80 degree has too much pincushion to justify the slight increase in field. OTOH I used to have 100 degree eyepieces (I'm unloading them now) since the field was so wide and awesome I could forgive the pincushion problems. Not the 80s though. The extra field wasn't worth the added pincushion. Yet many folks find the 80 degree format is the best for their use.

    Look through some samples. Find a local club and see what you like. For my own part I'm a bit of a hermit so I'll buy, try, and resell to recover most of my outlay. The GSO Superviews are inexpensive and should work OK in your f7 refactor and are only about $70 apiece.
    Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7 Newtonians: Z12 f5 Catadioptrics: VMC110L, Intes MK66 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binocular Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker III, Vixen Porta II, Celestron CG5, Orion Sirius EQG

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    Default Re: Calculating EP focal lengths to build a balanced set

    Thanks Fritz and I completely understand. I work in the music industry and have people asking my opinion on certain things all the time and I can only give an opinion on my preference. It’s a lot like asking you folks what I should eat for dinner. I’ve heard Plssl EPs work well in refractors and they’re a bit cheaper so I think I’ll star there and using JG’s advice as well. Thank you all once again for helping me on this virtually impossible task
    Oberwerk 11x70 and 15x70 binos
    Stellarvue 102 Access APO doublet
    Skywatcher NEQ6pro GEM
    GSO 2 Star diagonal
    Baader 6,10,18 Classic Orthos, 32 Ploosl, 1.3x and 2.25x Barlows
    Shoestring USB2EQ6 running ASCOM/EQMOD, Stellarium and CDC

  6. The Following User Says Thank You to JustinG For This Useful Post:

    j.gardavsky (02-17-2018)

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    Default Re: Calculating EP focal lengths to build a balanced set

    Quote Originally Posted by not_Fritz_Argelander View Post
    Many thanks for the tip. I NEED a 5mm KK!
    I've been a bad bad lad, BTW.
    Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7 Newtonians: Z12 f5 Catadioptrics: VMC110L, Intes MK66 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binocular Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker III, Vixen Porta II, Celestron CG5, Orion Sirius EQG

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    Default Re: Calculating EP focal lengths to build a balanced set

    KK or Tak??
    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
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    Ya gotta keep this Apo/
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    Default Re: Calculating EP focal lengths to build a balanced set

    Quote Originally Posted by Gabby76 View Post
    KK or Tak??
    The 5mm KK from Lacerta in Austria.
    Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7 Newtonians: Z12 f5 Catadioptrics: VMC110L, Intes MK66 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binocular Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker III, Vixen Porta II, Celestron CG5, Orion Sirius EQG

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    Default Re: Calculating EP focal lengths to build a balanced set

    Hello not_Fritz,

    did you manage to get it?
    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, Plssls; 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: Calculating EP focal lengths to build a balanced set

    Quote Originally Posted by j.gardavsky View Post
    Hello not_Fritz,

    did you manage to get it?
    Best,

    JG
    Not in my hands yet but I paid an invoice.
    j.gardavsky and SpyderwerX like this.
    Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7 Newtonians: Z12 f5 Catadioptrics: VMC110L, Intes MK66 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binocular Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker III, Vixen Porta II, Celestron CG5, Orion Sirius EQG

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    Default Re: Calculating EP focal lengths to build a balanced set

    Congratulations not_Fritz, I am feeling happy with you!

    Lacerta Vienna is on the Danube river, they truly ship river up the Kelheim gorge, then through the Rhein-Main-Donau channel, then from Frankfurt down the Main/Rhein to Amsterdam, but there are some fine wineyards on the both river sides, and from Amsterdam in the big containers as usual to the U.S.

    Happy waiting,

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