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  1. #1
    ahriman's Avatar
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    Default EP for an Orion Skyscanner 100mm



    Looking for suggestions on a nice eyepiece for the scope mentioned above. Not pricey as I will be taking away from larger aperture savings if it gets too spendy, but nicer than the included 10 and 20mm 1.25" EPs. Seems everyone has a 25mm they refer to. Could this be my target?

    Thanx
    : michael :::

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    Orion SkyScanner 100mm TableTop Reflector

  2. #2
    Skyscanner's Avatar
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    Default Re: EP for an Orion Skyscanner 100mm

    If you need anything it will be a shorter EP, not a longer one.

    Your 20mm EP gives you a magnification of 20x with a huge fov of 2.6°.
    A 25 mm EP would give you a magnification of 16x, not much of a difference.

    But a shorter EP will increase you magnification, making it possible to further resolve the brighter objects like open clusters and globulars.
    Your 10mm EP gives you 40x.

    My reccomendation would be to get a Shorty 2x Barlow.
    With the 10mm EP this will now give you 80x.
    If you place the lense of the barlow directly into the EP you will get 60x.

    The barlow will be cheaper than a new EP and you get two new magnifications in return.
    Travelscope 350mm f/4 build by Roel
    Skywatcher Flextube 10"
    Orion Skyscanner 100mm on Manfrotto 055 XDB tripod
    EP's from 6 mm to 24 mm and Shorty Barlow 2x
    Docter Optic Nobilem 8 x 56 B/IF

  3. #3
    Shelldrake's Avatar
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    Default Re: EP for an Orion Skyscanner 100mm

    Good advice from Skyscanner. A barlowed 10mm EP will also have better eye relief than a 5mm EP.
    David aka Shelldrake
    Equipment: Sky-Watcher 305mm
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    (f/5), EQ6-R, AZ3 mounts;
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    StarBlast 4.5 reflector (f/4), ED80T-CF refractor (f/6); Celestron 200mm SCT (f/10), 102mm refractor (f/10.3), NexStar GT
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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 Barlow, GSO 2.5X Barlow, Antares 3X Barlow; Cameras: ASI224MC, ASI183MC, Canon T3
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  4. #4
    Zilladude's Avatar
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    Default Re: EP for an Orion Skyscanner 100mm

    Agree. Your other option would be to buy a zoom eyepiece. The Zhummel 8-24mm zoom is cheap, it's good, and worth every cent. You can even barlow it. The fov at 8mm is about the same as a plossl, with almost 66* fov at 24mm....eye relief is 18mm, so if you wear glasses, it'll work for you too!
    "My Eyepieces are made from the waste product of exploding stars"
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    10XTi; 102 XLT w/CG4, ST80A w EQ1 Minimount & 2" Focuser, Coronado PST; ES 68: 34,24,20,16; ES 100: 20,14,5.5mm; Naglers: 13T1,11T1,9T1,7T1,4.8T1 (smoothies); 3-6mm zoom; 22 & 24 Pans, 3.7,4.7,8,13,17 Ethos, 6mm,8mm, 12mm, 17.3mm Delos; TV Plossls: 40,32,20,17,15,7.4 Orthos: UO-OPS 12,9; UO HD 7,9; 7mm RGO, Vixen NLV: 25,20,15,10,9,5; Pentax XW: Complete Set; XO: 2.58mm; Pentax 12.5mm Kellner; Misc Orthostars--ES82s are history

  5. #5
    Shelldrake's Avatar
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    Default Re: EP for an Orion Skyscanner 100mm

    Quote Originally Posted by Zilladude View Post
    Agree. Your other option would be to buy a zoom eyepiece. The Zhummel 8-24mm zoom is cheap, it's good, and worth every cent. You can even barlow it. The fov at 8mm is about the same as a plossl, with almost 66* fov at 24mm....eye relief is 18mm, so if you wear glasses, it'll work for you too!
    I think you mean FOV is 66 degrees at 8mm and less at 24mm...zoom EPs are funny that way.
    David aka Shelldrake
    Equipment: Sky-Watcher 305mm
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    (f/5), EQ6-R, AZ3 mounts;
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    StarBlast 4.5 reflector (f/4), ED80T-CF refractor (f/6); Celestron 200mm SCT (f/10), 102mm refractor (f/10.3), NexStar GT
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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 Barlow, GSO 2.5X Barlow, Antares 3X Barlow; Cameras: ASI224MC, ASI183MC, Canon T3
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