First try at IR NV

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clivej
Posts: 14
Joined: 09 Aug 2013, 08:10
Location: Ireland

First try at IR NV

Post by clivej » 16 Jan 2014, 16:24

Hi all my first time to post here.
I have got together some parts to make an IR NV setup to go on my Bushnell 6-24x50 4200 Elite scope.

Cam is a Sony 1/3" 700TVL ($30 Ebay item 261248543696) and generic 4.5 LCD screen (£12, item 160590243656), and the cam will fit onto a picatinny rail to fix it at the back of the scope.
IR source will be the Dereelight Nightmaster 800

First question is how do you get the target image and reticle in focus at the same time.

Is it to do with setting the parallax up right on the scope??

I have only played around with this at the moment and the image was only 7 yards away, min parallax on scope is 30 yards. I could see the image (target) but not the reticle.

Image
Last edited by clivej on 24 Jan 2014, 11:03, edited 1 time in total.

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sunndog
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Location: buxton, derbyshire

Re: First try at IR NV

Post by sunndog » 16 Jan 2014, 16:59

hi mate
get the crosshairs in focus first. use the camera lens focus first and if theres not enough adjustment move on to the scopes occular...when the ret is in focus leave that alone and use the scopes p.a to bring the target into focus


also, could you add your location to your profile please...nearest town/city would be great


cheers.....adam
oslon black drivers
http://nightvisionforumuk.com/viewtopic.php?f=35&t=2333

when asking for advice, please include what n.v device and/or illumination you already have (if any) and what rifles you intend to use them on...cheers

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22-250jock
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Re: First try at IR NV

Post by 22-250jock » 16 Jan 2014, 17:10

welcome to the Forum Clive :thumbup:

follow Adams instructions and you should get a good clear image, that's the beauty of a side parrelex scope, nice and easy to focus the image ;)

cheers jock
“When guns are outlawed, only the Government will have guns. The Government - and a few outlaws. If that happens, you can count me among the outlaws.”
― Edward Abbey,

32:1
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Joined: 12 Jan 2014, 21:43
Location: Essex

Re: First try at IR NV

Post by 32:1 » 16 Jan 2014, 17:18

What about a fixed scope say 6x40

Does it make life easier or harder as theres no adjustment ?
Now that might be a dumb question, but I just dont know

Chris

phoenix
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Re: First try at IR NV

Post by phoenix » 16 Jan 2014, 17:46

Chris,
The problem is that IR and visible light focus at different places when they pass through a scope. The scope is normally set up to be focussed in visible light and when that scope gets used with IR, it will be out of focus.
Using a scope with an adjustable objective lens or (preferably) side focus eliminates the problem.

Cheers

Bruce
LAND ROVER - THE WORLD'S WORST 4X4 BY FAR

32:1
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Joined: 12 Jan 2014, 21:43
Location: Essex

Re: First try at IR NV

Post by 32:1 » 16 Jan 2014, 17:51

Thanks for that advice Bruce, cheers

Looks like Im going to need a scope too :(

Chris

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sunndog
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Re: First try at IR NV

Post by sunndog » 16 Jan 2014, 17:56

32:1 wrote:Thanks for that advice Bruce, cheers

Looks like Im going to need a scope too :(

Chris
try the scope you have first mate....non adjustable scopes are not ideal, but quite a few chaps do it
oslon black drivers
http://nightvisionforumuk.com/viewtopic.php?f=35&t=2333

when asking for advice, please include what n.v device and/or illumination you already have (if any) and what rifles you intend to use them on...cheers

clivej
Posts: 14
Joined: 09 Aug 2013, 08:10
Location: Ireland

Re: First try at IR NV

Post by clivej » 16 Jan 2014, 18:03

32:1 wrote:What about a fixed scope say 6x40

Does it make life easier or harder as theres no adjustment ?
Now that might be a dumb question, but I just dont know

Chris

Although your scope is fixed parallax you can 'unscrew' the abjective lens on many scopes to get the parallax you need.
Half a turn will get you 50 yards.
Many fixed scopes are set at 100 yards.

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some bloke
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Re: First try at IR NV

Post by some bloke » 17 Jan 2014, 00:26

clivej wrote:
32:1 wrote:What about a fixed scope say 6x40

Does it make life easier or harder as theres no adjustment ?
Now that might be a dumb question, but I just dont know

Chris

Although your scope is fixed parallax you can 'unscrew' the abjective lens on many scopes to get the parallax you need.
Half a turn will get you 50 yards.
Many fixed scopes are set at 100 yards.
That's what I do with with mine, then do it back up for regular use.. :thumbup:
Image

sedstar
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Location: across the pond, PA, the states...

Re: First try at IR NV

Post by sedstar » 17 Jan 2014, 04:10

screw the MAIN LENS in and out for "parallax", which is actually more like focusing the image....

screw the eyepiece in and out? that will focus the croshairs, and not the IMAGE.

===================================================

when you have a "parallax adjustable" scope... its not doing anything special, that YOU arent doing when you screw the lens in and out yourself...

adjustable objective, or side focus/parallax? its really just CONVENIENCE, not a necessity...

yes, i "concur"... i always have to adjust the eyepiece in and out to run a day scope with IR night vision... to bring the crosshairs into sharp focus.
Well, I understand that, boys... but see, my CAT gets the silly idea you're making fun of HIM... then he gets, *really* mean...

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