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Simple night vision build

Discussion in 'Night Vision Optics' started by terry1001, Oct 9, 2014.

  1. terry1001

    terry1001 Major Poster

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    Unfortunately my workshop is too small and not enough space for everything and I can't justify the cost of doing the conversion which would sort it all out.
    The screen is something that some people struggle with, It doesn't bother me at all but it does take a fair bit of use to come to terms with the different style of shooting required. It's almost essential to have a screen which has controls to reduce the brightness and it's also feasible to cover it with something like car window tinting film which will aslo cut glare. I've used some tubed nv equipment which requires you to use one eye to look through it and I found that doing this caused me problems with vision in that eye and could lead to headaches as the light from the tube was so bright that it hurt. Using the monitor you view it at low brightness with both eyes and it seems more comfortable.
    With a screen you also have options for holding the rifle (pcp only really) so you could, for example, sit with the rifle in your lap and still be able to shoot or use it more easily from inside a vehicle.
    If people simply must have something to look through there are options available but they require more skills with soldering/electronics and/or more money. There is no single 'right' way to do this and enthusiasts are experimenting with a lot of alternative ways of getting better performance but for use on an air rifle or .22lr the simple rear add-on takes some beating.
     
  2. whitevanman574

    whitevanman574 Donator

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    or you could just go on nvuk on facebook they build them a lot cheaper ?
     
  3. terry1001

    terry1001 Major Poster

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    You can build one a fair bit cheaper but it will be more difficult to put together and it won't be anywhere near as good. The idea here is just to show that it can be done by anyone and you don't need to have loads of tools or be an electronics genius.
     
  4. supafly1982

    supafly1982 Donator

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  5. terry1001

    terry1001 Major Poster

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    You can't make a direct comparison. The Photon is an excellent nv scope and it does have some daylight capability but a rear add on can be removed in daylight and you then have the full use of your scope, when it becomes too dark to see through the scope you fit the add on and with one built to this spec you will retain colour vision for a while (with no ir illumination). The E700 has higher resolution than the Photon and will give a crisper picture although you do need a decent monitor to gain the full benefit. Obviously the Photon is a 'look-through' device just like a conventional scope while the add on will normally use a screen to view the image.
    The E700 add on will have a longer shooting range than an unmodified Photon which has a 5x magnification.
    If you only have one rifle then an add on is the way to go, if you can have a dedicated night shooting rifle then consider a Photon to go on it.
     
  6. audiguypaul

    audiguypaul Donator

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    Great work terry as usual, just a quick note if i may for anyone considering this is to check that the FloPlast coupler will fit your scope before you order all the bits.

    atb Paul
     
  7. terry1001

    terry1001 Major Poster

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    Good point to bring up Paul, I did refer to it in the video, the straight coupler should be ok for most scopes as it is likely to be slightly larger bore than the od of the scope eyepiece which can be built up with tape or a thin strip of plastic plus tape as required. It's a simple job to measure the scope or get one of the couplers (from B&Q etc) and try it or even take your scope along to the store and browse through the stock on the shelves.
    If the scope eyepiece is larger a bit of lateral thought might be required, you can open out the couplers a touch but the walls aren't that thick so you might get 1mm but not more. There will be a fairly simple way around it if you lok.
     
  8. Tim_B

    Tim_B Big Poster

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    OK, bitten the bullet and ordered the parts....I want to compare the Yukon to the screen NV in terms of usage....I really like the fact that you can use your day set up at night and not have to learn a whole new bunch of aim points.....although having said that, I just like gadgets :)

    Tim
     
  9. terry1001

    terry1001 Major Poster

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    There's nothing wrong with liking gadgets :up:
    Hopefully all the parts will arrive quickly and you'll be reporting on it within a week.
    It looks as though you're a neighbour so drop me a message if you get stuck.
     
    Last edited: Oct 15, 2014
  10. scottroutledge

    scottroutledge Engaging Member

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    I've recently started to build a diy nv scope add on and I have used a cheap cctv cam a cheap screen and battery plus a couple of wires and cuplers and without the price of the ir torch I have only spent £65/70 and it works just fine! Not to be funny but I hunt with a modded Smk xs78 and wouldn't even consider putting an nv scope costing possibly 3 times as much as the gun on! It's a cheap diy setup all the way for me and it never let's me down! View attachment 105229
    Scott
     
  11. 3.5mag

    3.5mag Donator

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    Hi Terry,

    is there a screen available with suitable resolution to use with a 3x lcd viewing loupe to convert this rig to an economical " shoot through"?
     
  12. Tim_B

    Tim_B Big Poster

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    Thanks for the offer Terry and will do. I'll probably be tapping you up for an IR torch anyway :)

    Thanks
    Tim
     
  13. terry1001

    terry1001 Major Poster

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    Not really as the pixels would appear too large unless the screen were very high resolution and there's nothing about that really would be suitable. I know some people have used the very small screens but to my mind they are far from ideal.
    It is possible to use a crt viewfinder from an old camcorder which can be done with just a little electronics understanding and the ability to solder. This can be done for about a tenner but you need to find an old camcorder which has the viewfinder connected with conventional wires rather than the ribbon cables which are used on later models. For about £120 or so you could use something like the small lcd viewers sold for cctv installers which are much like a camcorder eyepiece but are supposed to be quite good and simple to fit.
    There are some small oled displays available from the Far East, these have very good resolution but are a bit more difficult to fit and more expensive.
    Although there are some small screens about which are supposed to be HD (on car dash cams for example) they nearly all seem to be fully integrated so won't work with the video output from the cctv cameras.
    Be careful about the specification of the screens which are available on ebay, amazon etc as they frequently misrepresent the resolution and although prices of better panels have come down it's still a case of you get what you pay for. A sensible resolution to aim for is 800x480 which roughly matches the camera sensor size and gives quite good results, the downside is size but they aren't that much bigger than the 3.5" versions which are normally 320x240 (no matter what they claim). You can also buy the panels and drivers to fit into your own case if you're feeling really creative, these are usually better quality and priced accordingly.
     
  14. r10hunter

    r10hunter Honorary Member

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    Last edited: Oct 16, 2014
  15. 3.5mag

    3.5mag Donator

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    Cheers chaps:D
     
  16. terry1001

    terry1001 Major Poster

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    I'd forgotten about goggles as a viewing option. A few people do use them but not many and I've wondered what they would be like to use, my concern is that normally when you move your head or look through a scope and move it your view changes but with the goggles you would get a feeling of movement as the rifle was moved and it might produce some form of motion sickness although I've not heard of anyone suffering this.
    There are several options but some have quite low resolution and may have 16:9 aspect ratio while the camera is 4:3 so your image would either have black side borders, be cropped top and bottom or be stretched. I think that you might be able to remove one of the lenses and have normal vision with that eye and a scope view with the other. Would be interesting to hear about ways they have been used - how about a drop down one on a helmet mount that you could just flick down when ready to take the shot?
     
  17. supafly1982

    supafly1982 Donator

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    wonderful thanks! Do you have a pic of your rifle set up with all the gear on it? The reason for my first post there was I was wondering how cumbersome the likes of a screen, battery pack etc is, I have absolutely no experience using NV gear so would not know how it would affect me hunting.

    cheers
    scott
     
  18. terry1001

    terry1001 Major Poster

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    I'll put some up when I get a chance, the video shows the add on in position and the battery goes into the pouch that fits onto the stock. All loose wires can be tucked into the pouch as well, if any connectors don't feel solid they can be fixed with a turn of tape to hold them together.
     
  19. supafly1982

    supafly1982 Donator

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    Good man, thanks
     
  20. kal el

    kal el Post Whore

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    had my setup for a while now, screens have been an issue with reported res being far off stated. i had a reported 800x680 3.5inch, it was decent but the one terry has listed arrived today and is bigger and better, uk based and good price.

    also i use an mtc scope and for a stable fit i used a 38mm to 42 step up ring and its nice and solid
     
    Last edited: Oct 18, 2014

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