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Scopes for Dummies

Discussion in 'Anything Airgun Related' started by Tang, Jul 4, 2014.

  1. Tang

    Tang Active Member

    Messages:
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    Location:
    Worcestershire
    My old new rifle has come with a Hawke nite eye 3-12x50 AO IR scope. Now I understand the numbers but can someone write an idiots guide to all the knobs and dials. The previous guy said that it was zeroed ( the dial under a cover on the side) but under what circumstances and when do I fettle with the other knobs n dials. Admittedly I haven't had it in a good open space yet so it might become obvious when I do
     
  2. sej016

    sej016 Donator

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    Location:
    Fareham, Hants.
    Looking down the scope from the rear....

    The covered clicky knobs on the top and the right (in the middle) set the sight's zero.

    The knob on the left switches the reticule illumination on/off/intensity/colour.

    The rearmost lens adjustment focuses the reticule. The inner ring at the rear is for the zoom.

    The frontmost (objective) adjustment is for distance focusing.
     
    Last edited: Jul 4, 2014
  3. racingjase

    racingjase Member

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    Location:
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    Hi Tang.. What air rifle did you get and what cal?
     
  4. loki_79

    loki_79 Donator

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    Location:
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    The most likely thing to cause confusion is the difference between the objective focus and the reticle focus.

    The objective focus, also called parallax adjustment, is done by twisting the objective bell. There will be markings on this in yards. It is exactly like the focus on a pair of binoculars. You can only focus perfectly at a single distance, and when an object is in focus you will not get any parallax error.

    The reticle focus is at the other end of the scope (the end that you look into), and this should only need adjusting once. Looking at a plain distant image (such as a clear sky), adjust this so that you can clearly focus on the reticle. The reticle never moves, so this is all that is required. From now on, it is by adjusting the objective focus that you bring the image plane of the target into the same plane as the reticle.

    Finally the zoom ring should be obvious, but it is worth noting that a higher zoom will amplify any difference in the two focal planes, resulting in the potential for greater parallax error if your eye is not aligned with the optical centre of the scope. A common complaint of a badly set up scope is that the reticle and/or image goes out of focus at higher zoom, and this is the reason.

    Hope that helps a bit!
     
  5. Tang

    Tang Active Member

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    Location:
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    Thanks all, yes it does help a bit although I will admit it's still a little confusing but I'm sure it will become clearer ( excuse the pun) with some practice.

    jase the lad down the road was selling his single shot BSA scorpion .22 so I had it off him with said scope and silencer.
     

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