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Nightvision Self build

Discussion in 'Night Vision Optics and Illumination' started by danfick, Jan 21, 2014.

  1. danfick

    danfick Active Member

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    Hi Guys

    Everyone seems to be recommending Terry for an IR Torch at a great price so I will contact him when I am ready to build.

    In terms of a camera would one of these be suitable:
    http://www.ebay.co.uk/itm/Spy-CMOS-...11258554581?pt=UK_Gadgets&hash=item19e786d0d5
    http://www.ebay.co.uk/itm/Mini-Came...-/330987880757?pt=UK_CCTV&hash=item4d106a4135
    http://www.ebay.co.uk/itm/1-3-inch-...-/221004580212?pt=UK_CCTV&hash=item3374e64574
    http://www.ebay.co.uk/itm/2-4GHz-1C...90785561397?pt=UK_Gadgets&hash=item2c6bb4a335

    Would I need to get a lens over the top of this or would I be OK to mount this using one of the homemade mounts similar to the one outlines in this posters thread
    http://www.airgunforum.co.uk/forums/showthread.php/171130-Bullet-camera-housing-a-visual-HOW-TO

    I'm thinking this battery
    http://www.ebay.co.uk/itm/12V-3800m...tem27dcb2d536&clk_rvr_id=576267981342&afsrc=1

    and either of these screens
    http://www.ebay.co.uk/itm/151172829500?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
    http://www.ebay.co.uk/itm/321151987176?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

    Other than the mounts, which I am quite happy to fashion myself using some spare mounts and a little creativeness, is there anything else I would need.

    Apologies for the long post but cameras and night vision is not a topic I am particularly well versed in and so want to make sure to get some good advice before diving in and realizing I'm not even close to the right idea.


    Thanks
     
  2. terry1001

    terry1001 Major Poster

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  3. SteveO

    SteveO Top Poster

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    None of the cameras you listed are up to the job, especially the wireless one, you would need a transmitter/receiver for that and they are useless cameras... I have one, it also overheats!

    The screens are okay but can be obtained from within the UK for a similar price. I have a few of them but this one is better - http://www.ebay.co.uk/itm/280906884861?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

    Battery should be okay so long as it's 12v.

    The camera I recommend is this one - http://www.ebay.co.uk/itm/Mini-600T...39?pt=US_Security_Cameras&hash=item3ccdf982ff
     
  4. danfick

    danfick Active Member

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    Hi guys

    appreciate the extremely quick replays. I like the idea of the larger monitor recommended by Steve.

    Terry, you mention a lens in your referenced post. Is this something you must have or is an option. What does it offer that the stand alone camera does not?

    thanks again

    dan
     
  5. terry1001

    terry1001 Major Poster

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    The board cameras (and to a lesser extent bullet cameras) are designed to take interchangeable lenses which give the camera a different field of view. The optimum for add on use seems to be between 16 and 25 mm focal length. The aperture should be as wide as possible, f1.4 is fine and f1.8 is almost as good. The lens must be one which is designed to work with infra red light, some are daylight use only.
    Most of the cameras come with a very cheap wide angle lens which is about as much use as a chocolate teapot although some sellers do offer a choice if you read their listing carefully. A 9-22 zoom lens would also be ok as it gives you the chanve to set it how you prefer.
    It is much easier to change lenses on a board camera and you can also change the lens fitting for better performing, larger cs mount lenses if you ever want to.
     
  6. Falcon User

    Falcon User Engaging Member

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    I have 1 addition to your list
    I have bought this screen
    http://www.ebay.co.uk/itm/261244208438?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

    This has one very handy feature , if you have a scope with turret caps (like the MTC Mamba range), as you can screw the mounting clip of this screen to the scope's elevation adjustment cap.
    This way you end up with a scope cap and monitor mount in one, which looks like this.
    [​IMG]

    This way you do not need a seperate mounting bracket for the screen, but it only works on scopes with capped turrets.
     
  7. danfick

    danfick Active Member

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    So do you have to have the additional lens?, I suppose zoom would help to focus upon the reticle of the scope. Is there a way of confirming which lens would suit a board camera. I was thinking about maybe this lens after looking at your posts:
    http://www.ebay.co.uk/itm/9-22mm-1-...?pt=UK_Sound_Vision_Other&hash=item2ec9f837bc
    or
    http://www.ebay.co.uk/itm/6-15mm-1-...?pt=UK_Sound_Vision_Other&hash=item2ec9f837c7
    or
    http://www.ebay.co.uk/itm/2-8-12mm-...?pt=UK_Sound_Vision_Other&hash=item2ec9f837d0

    Thanks again for all the help guys. Cameras and lenses are not a topic I know anything about but the help on these forum has been incredible. I hope others who are looking at this can take a hint and ask whilst there is still a pool of helpful people
     
  8. terry1001

    terry1001 Major Poster

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    Those lenses will all fit, it's a standard 12mm thread. Only the first one will be suitable as the others are too short a focal length, I would advise not less than a 16mm focal length would be suitable for most people.
    The focal length of the camera lens determines what sort of view of the scope image you will get. With the 1/3" sensors which are generally used a 16mm lens will give an image which has thin black lines down each side while a 25mm lens will crop the scope image all round and will give you a magnified view of what you would have seen through the scope.
     
  9. danfick

    danfick Active Member

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    Guys, Thanks for all the advice. Not including the illuminators I believe the costing would be around the £70 mark for the following componenents:

    Camera
    http://www.ebay.co.uk/itm/261342610416?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2648
    Lens
    http://www.ebay.co.uk/itm/200956983228?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
    Battery
    http://www.ebay.co.uk/itm/151068208720?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2648
    Display
    http://www.ebay.co.uk/itm/280906884861?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

    Hopefully this is all correct and my discovery/introduction in to the world of night vision can help others in the future

    Dan
     
  10. SteveO

    SteveO Top Poster

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    Hi Dan,

    Your selection is spot on so far, remember you will need a two way power splitter to power the screen and camera from the same battery.

    Your battery seller is UK based, one thing to bear in mind is that Royal Mail will confiscate the battery if the seller sends it through their service, maybe contact them and ask how it will be sent to avoid a long and disappointing wait!

    I've lost two batteries that went to Belfast for destruction but as you know eBay will protect you! After getting the seller to change courier I managed to get them in the end.
     
  11. danfick

    danfick Active Member

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    Steve, The battery postage advice sounds spot on. I have read a lot of different posts on many threads that express peoples dismay at the success (or lack there of) of Royal Mails postal service, batteries being a fairly popular one recently.

    Thanks again for all the help.

    PS; Terry, when the funds are confimed I'll be in contact about one of your famous torches, CANNOT WAIT!!!!!
     
  12. neiled

    neiled Donator

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    Sorry for jumping in on the OP but just for clarification on lenses with 2 adjustments (see the picture below - T & W and focal length) where do you set the T & W as I've had a hell of a job getting a clear picture on my NV set up?

    Before connecting the camera to the scope I adjust it to give a clear picture on the screen but when I place it inside the scope connection tube the pictures out of focus on the screen which means I have to take it apart again and guesstimate where to set the 2 lens adjustments before reconnecting it.



    [​IMG]
     
  13. SteveO

    SteveO Top Poster

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    Could you extend the screw so they protrude from slots in the mounting tube, you would be able to focus the lens while mounted then?
     
  14. neiled

    neiled Donator

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    Hi SteveO

    Yes that's a possibility but I think it would be quite tricky to do so I may just change the lens for a fixed focus rather than adjustable, do you think 16mm would be ok? Do the fixed focus lenses have the adjustable T & W (not sure what T & W stands for)?
     
  15. SteveO

    SteveO Top Poster

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    I prefer 16mm as it suits my setup, some people prefer 25mm but I find that all I have is a view of the reticle and no peripheral vision of what's going on further afield each side of the target.

    If you can afford to buy both it wouldn't hurt to make your own judgement, Stock Optics sell them competitively!
     
  16. terry1001

    terry1001 Major Poster

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    Stary by setting the zoom (T/W) about midway, you can fine tune it later when you've got the hang of it. Point the scope at a blank wall or cloudy sky and put the camera so that the front of the camera lens is about 38/40mm away from the rear lens of the scope. If it's difficult with all of your housing in place then just use whatever you can to get it in place. Now focus the camera on the reticle and lock it in place. Hook everything up and focus the scope on your targets using side focus or AO.
    If you're seeing too much black around the scope view then take it apart, zoom in a bit (towards T) and repeat the above.
    With a 1/3" sensor camera I normally try for a focal length of about 20mm, on a 1/2" sensor I use a 25mm.
     
  17. neiled

    neiled Donator

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    Terry

    Thanks once again for clear and concise help, much appreciated.

    Neil
     

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