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  1. #1
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    Default whats the difference between 1.25 and 2



    Hi guys, quick question about eyepieces. Im interested in buying a 1.25 or 2" eyepiece kit.


    Whats the difference? Larger eye relief with the 2.0?

    Any help is appreciated.

    thanks

  2. #2
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    Default

    Hi gripex, some relevant info:

    Eyepiece Diameters


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  4. #3
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    Default

    Hey, Gripex, where in BC are you?

    Short answer to your question: 1.5.
    Meade 16" LightBridge; Celestron G-8N Bird-Jones/motorized EQ5;
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    Groan.. that one took me a minute. lol

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    Default

    prince george bc.


    still trying to figure the 1.5 out, though. lol

  7. #6
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    oh jeez, i think i get it now.

    lol

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    Default

    My bad, meant 1.25.
    Meade 16" LightBridge; Celestron G-8N Bird-Jones/motorized EQ5;
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    49-41-37.03N 123-09-29.61W Calculated magnetic declination: 17° 39' East

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    Well.. now I'm lost again. I thought you were giving him the mathematical difference.. and I was overlooking the discrepancy in the spirit of the joke.

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    Default

    im lost too. the way i saw it was you take the 2 out of the 1.25 and are left with 1.5 (not mathematical)

    lol

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    Default

    Ok, ( insert embarassed smiley here). I had a "senior moment", something thst happens all too frequently these days.

    a longer answer seems to be in order at this point.

    When you get down to low mms/high magnifications, the extra 3/4" doesn't amount to a hill of beans. It is only above 20 mm or so that a larger eyepiece is an advantage.

    If you have lots of aperture, of course, 2" eyepieces in the higher mags will allow more light through.

    Of course, this is just my perception from the education I am receiving here, and subject to correction my those more versed in optics than I.
    Meade 16" LightBridge; Celestron G-8N Bird-Jones/motorized EQ5;
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    127 Mak/go-to EQ5; Burgess 127f8 refractor; Sky-Watcher 5" F/5 collapsible dob; 90mm Mak/motorized EQ2; Royal Astro 76/910-GEM; Meade 60x700 refractor/alt/az; Zhumell 25x100 Coin Ops; GalilleoScope. Celestron 8mm-24mm zoom; lots of fixed EPs,some good, some..not so much. A small collection of surveying instruments; a forest of tripods; Canon Rebel Xti. Confirmed gadget junkie; Custodian of the Magnetic North Pole (Send $1.00 to Pierre each time you use a compass.)
    49-41-37.03N 123-09-29.61W Calculated magnetic declination: 17° 39' East

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