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Thread: Sears 10x50 Discoverer Binos

  1. #1
    Don Alvarez's Avatar
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    Default Sears 10x50 Discoverer Binos



    So (there it is again) my dad came up with another auction special, a pair of old Sears 10x50 Discoverer binos for $7. Age unknown, but they're the ones with the silver highlights around the focus wheel and eyepieces. Glass is in good shape but dirty, though the exterior is pretty messed up and some nimrod etched his name and some other nonsense on the housings. Now, my dad was hoping to use these for spotting down at the shooting range, but they are out of collimation a bit. I see no screws on the housing, but I've read these may employ collimation "rings" around the objective lenses. I took off the cover and sure enough, there is an inner and outer ring around the objective one or the other I assume is the collimation ring, and that's about as far as my Google expertise takes me. Am I on the right track here? Can anyone give me some tips on lining these things up?
    Telescopes: 10" SkyLine Dobsonian, Celestron Nextar GT90, Meade Infinity 80
    EP: The Five Fingers of Doom: 5.5mm, 8.8mm, 14mm, 20mm, 24mm Meade 5000 UWA's
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    "The heavens themselves, the planets, and this center observe degree, priority, and place,
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  2. #2
    j.gardavsky's Avatar
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    Default Re: Sears 10x50 Discoverer Binos

    Hello Don,

    any pics of the binoculars to share?
    These may be Tasco or others from Japan, just rebranded, so not bad.
    Best,

    JG
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    Binoculars: Leica Ultravid 7x42, 8x42HD; Swarovski EL 8.5x42 Swarovision; Nikon 10x70 Astroluxe; 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; Tele Vue Nagler Zoom, Plössls; Swarovski SW; Pentax XW; ZEISS diascope B WW T*, Carl Zeiss E-Pl; Filters: Astrodon, Astronomik, Baader (CCD), TS; Astrophotography: AstroTrac; Leica R7, R8: Leica 2.8/100mm and 3.4/180mm APO lenses; Zeiss Sonnar 4/300 on Nikon F70;
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    Default Re: Sears 10x50 Discoverer Binos

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

    any pics of the binoculars to share?
    These may be Tasco or others from Japan, just rebranded, so not bad.
    Best,

    JG
    I'll post some up when I get home from work JG
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    Telescopes: 10" SkyLine Dobsonian, Celestron Nextar GT90, Meade Infinity 80
    EP: The Five Fingers of Doom: 5.5mm, 8.8mm, 14mm, 20mm, 24mm Meade 5000 UWA's
    26mm, 32mm, 40mm Meade 4000 Plossls, 30mm, 20mm GSO Superview, Orion Expanse, Various others.
    Binocs: 15x70 Celestron Skymaster, 10x50 Levenhuk Karma Pro, 10x42 Bushnell, 8x42 Sans & Streiffe

    "The heavens themselves, the planets, and this center observe degree, priority, and place,
    Insisture, course, proportion, season, form, office, and custom, in all line of order.”


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    Default Re: Sears 10x50 Discoverer Binos

    Here we go. As I said, dirty. On closer inspection it looks like these may have taken a few shots, the retaining ring might be flattened on one of the objectives and it may be pushed from center slightly. I'm wondering if that might be the cause of the collimation issue. I've highlighted a closeup of the rings on one of the objectives, I don't know if one of these is the collimation ring I've heard described or part of the cell maybe. Any ideas, or are these hopeless?

    20180516_230159.jpg 20180516_230213.jpg 20180516_231408.jpg
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    Telescopes: 10" SkyLine Dobsonian, Celestron Nextar GT90, Meade Infinity 80
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    26mm, 32mm, 40mm Meade 4000 Plossls, 30mm, 20mm GSO Superview, Orion Expanse, Various others.
    Binocs: 15x70 Celestron Skymaster, 10x50 Levenhuk Karma Pro, 10x42 Bushnell, 8x42 Sans & Streiffe

    "The heavens themselves, the planets, and this center observe degree, priority, and place,
    Insisture, course, proportion, season, form, office, and custom, in all line of order.”


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    Default Re: Sears 10x50 Discoverer Binos

    Thanks for the pics, Don!

    They still have the sticker "passed", which indicates a high quality made in Japan for export.
    Admitted, I have no idea where the collimating screws are hidden, they are as a rule covered by the armor.
    You'll spend some time with cleaning I guess, but this pair for $7 is pretty good.

    Keep us posted about your progress,

    JG
    Don Alvarez likes this.
    Binoculars: Leica Ultravid 7x42, 8x42HD; Swarovski EL 8.5x42 Swarovision; Nikon 10x70 Astroluxe; 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; Tele Vue Nagler Zoom, Plössls; Swarovski SW; Pentax XW; ZEISS diascope B WW T*, Carl Zeiss E-Pl; Filters: Astrodon, Astronomik, Baader (CCD), TS; Astrophotography: AstroTrac; Leica R7, R8: Leica 2.8/100mm and 3.4/180mm APO lenses; Zeiss Sonnar 4/300 on Nikon F70;
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    Default Re: Sears 10x50 Discoverer Binos

    Quote Originally Posted by j.gardavsky View Post
    Thanks for the pics, Don!

    They still have the sticker "passed", which indicates a high quality made in Japan for export.
    Admitted, I have no idea where the collimating screws are hidden, they are as a rule covered by the armor.
    Oh I hope not. I already probed with a knife where I thought one may be, only to find nothing but the housing underneath. That armor is more like just a skin.
    You'll spend some time with cleaning I guess, but this pair for $7 is pretty good.

    Keep us posted about your progress,

    JG
    Thanks to Bryan it'll be clouded up and raining the next two days, so these and the Sans & Streiffe probably get some love this weekend. I may have to invest in a good pair of spanners.
    j.gardavsky and bladekeeper like this.
    Telescopes: 10" SkyLine Dobsonian, Celestron Nextar GT90, Meade Infinity 80
    EP: The Five Fingers of Doom: 5.5mm, 8.8mm, 14mm, 20mm, 24mm Meade 5000 UWA's
    26mm, 32mm, 40mm Meade 4000 Plossls, 30mm, 20mm GSO Superview, Orion Expanse, Various others.
    Binocs: 15x70 Celestron Skymaster, 10x50 Levenhuk Karma Pro, 10x42 Bushnell, 8x42 Sans & Streiffe

    "The heavens themselves, the planets, and this center observe degree, priority, and place,
    Insisture, course, proportion, season, form, office, and custom, in all line of order.”


 

 

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