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scopes for nv

Discussion in 'Night Vision Optics and Illumination' started by steffie1972, May 14, 2015.

  1. steffie1972

    steffie1972 Engaging Member

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    right i am in the process of building a ir nv set this will be swapped between to different guns

    the first being a logun s16 .22 with a 6-24x50 scope

    the second being my hatsan at44-10 in .177 with a 4-12x50 scope

    i have a few questions
    1/ will these skopes be ok for use with the nv

    2/ i have followed terrs plan for mounting the camera but my ocular lenses are bigger than the 40mm of the straight connector would slicing the straight conector to make it feather out be a good way to overcome this problem

    steffie
     
  2. Carb

    Carb Donator

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    Last edited: May 14, 2015
  3. reaper1064

    reaper1064 Engaging Member

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    Hi mate are they side focus or AO as your scopes will need one of these to perform with NV.
     
  4. steffie1972

    steffie1972 Engaging Member

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    the scope on the logun has a ao the other has fixed objective lens
     
  5. themadspread

    themadspread Donator

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    you def must have a/o.i sawap my n/v (terry homebrew)between 2 guns.now for bunnies i use 177 and i ambush from 30/35 yds so you can get away with front adjust.but when rattin 15 to 30 yds then sise focus is way better.the e700 camera is much better than the naked eye and will go in and out of focus every 4 to 5 yds so side focus is miles quicker but ambushing at a set range youll be ok with the front a/o
     
  6. terry1001

    terry1001 Major Poster

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    Most scopes will work with a nv add on with the eceprion of thosw which don't have focussing. IR light focusses at a different distance to white light so if you can't focus the scope you'll end up with just a blur and you really need to be able to focus down to 10 yards in daylight. 6x magnification is a bit on the high side for a lot of night vision but is just about usable although you might struggle a bit on rats for example. Side focus is easier to use.
    Judging distance at night with night vision is likely to be quite difficult at first as the monochrome image and the fact that you only have monocular vision make it hard to work out even if an object is in front of or behind another. It becomes easier with time and carrying out a good recce in daylight helps as well.
    The Floplast straight coupler actually has an internal diameter of about 43mm and should fit most scopes, you can add insulating tape around the eyepiece if it's slack and you can also open it out a bit maybe by a total of up to 2mm. Alternatively there is the other coupling mentioned above.
     
  7. steffie1972

    steffie1972 Engaging Member

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    thanks for the advice the flexi coupler looks like the bit i need to mount it onto my scope

    thanks again

    steffie
     
  8. David M

    David M Donator

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    I used to use a scope that only went down to x6 magnification and over time found it too limiting with the NV unit. The only thing you can see in the dark is obviously what's on the screen, the lower the mag the wider the field of view and the less you need to wave the gun too and fro to scan about.

    I use a 3-9x40 AO (front AO) and find it perfect for the job. I scan with it on x3 then up the mag to x9, tweek the AO for focus and take the shot. It's not too much to do as the bunnies are usually very unaware of anything watching them and usually only takes a moment.

    I built up the diameter of my ocular using 30mm cut lengths of old bike inner tube stretched on top of each other to a snug fit thickness. Make the last piece 35mm to drape down the sides of the others and not leave any edges to catch. Nice and grippy too and doesn't move. That's left on the scope during the day as well....:up:
     
    Last edited: Jul 24, 2015
  9. terry1001

    terry1001 Major Poster

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    I find that the lower the magnification you can manage with for nv the better and easier it becomes. The narrower your field of view the more difficult it is to find and identify targets, you can always zoom in a bit more to take the shot if you feel you have to and a fishing coaster on the zoom ring does help with this.
    The inner tube idea is excellent and should work better than insulating tape, trouble is I've got no bikes but loads of tape!
     
  10. Tripleteer

    Tripleteer Donator

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    The bigger the objective lens (50mm) the more light the scope will let in!!!
     
  11. r10hunter

    r10hunter Honorary Member

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    And a loss of depth of field. So swings and roundabouts.

    Cheers Andy
     

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