reflected IR

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oilcan
Posts: 23
Joined: 23 Mar 2014, 13:21
Location: Cornwall

reflected IR

Post by oilcan » 06 Oct 2018, 12:43

Can anyone tell me please, the best way to exclude the reflected glare from a Blacksun t20 off a mod and stainless barrel .The sunshade for a 50mm. S tac is a little pricey,will other makes fit? Thanks in advance.

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some bloke
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Posts: 7546
Joined: 27 Jan 2012, 16:14
Location: Cornwall or Leicester

Re: reflected IR

Post by some bloke » 06 Oct 2018, 12:54

Do whatever it takes to prevent the light from the torch illuminating the barrel and the sound mod. That can be using a long shroud on the torch or the scope. Kitchen roll tubes painted matt black can work wonders if you can live with that sort of thing. :angel:

Setting it up with a white or red visible light torch makes things easier. The tube can be outside or inside the lens carrier and should prevent the entire torch lens from being visible from the end of the barrel at least, yup, take a look at it from that end. ;)

Before anyone asks... I don't have any torch shrouds left.
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Ttocs
Posts: 31
Joined: 13 May 2018, 09:19
Location: Northumberland uk

Re: reflected IR

Post by Ttocs » 06 Oct 2018, 13:37

I used a 8” length of black plastic waste pipe on my Sunranger. A little black insulation tape around the torch head may help if the pipe is a little too large.
Cut the pipe to a scoop shape if required as you only need to screen projection onto the barrel area.
Ttocs

Ranger22
Posts: 64
Joined: 10 Jan 2013, 07:04
Location: West Coast of scotland

Re: reflected IR

Post by Ranger22 » 15 Oct 2018, 04:38

We used to tape up the bottom third of the objective lens when we had this problem whilst using white light, might work for ir too

oilcan
Posts: 23
Joined: 23 Mar 2014, 13:21
Location: Cornwall

Re: reflected IR

Post by oilcan » 15 Oct 2018, 06:55

Thanks everyone,I have tried your suggestions and the problem is solved,my ruby sunranger now gives me a shootable 3-400m range (far more than I need).Cheers.

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some bloke
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Joined: 27 Jan 2012, 16:14
Location: Cornwall or Leicester

Re: reflected IR

Post by some bloke » 15 Oct 2018, 10:36

oilcan wrote:
15 Oct 2018, 06:55
Thanks everyone,I have tried your suggestions and the problem is solved,my ruby sunranger now gives me a shootable 3-400m range (far more than I need).Cheers.
Which of the suggestions werked my ansum? :angel:
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oilcan
Posts: 23
Joined: 23 Mar 2014, 13:21
Location: Cornwall

Re: reflected IR

Post by oilcan » 15 Oct 2018, 19:06

My bodged sunshade,a piece of black plastic downpipe with a jubilee clip holding it on to the objective and almost reaching the over barrel mod.What a difference!

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some bloke
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Posts: 7546
Joined: 27 Jan 2012, 16:14
Location: Cornwall or Leicester

Re: reflected IR

Post by some bloke » 15 Oct 2018, 20:19

oilcan wrote:
15 Oct 2018, 19:06
My bodged sunshade,a piece of black plastic downpipe with a jubilee clip holding it on to the objective and almost reaching the over barrel mod.What a difference!
A proper Cornish fix then - good for you. :angel:

This cardboard postal tube painted black does a fair job too, especially useful if you have a stainless barrel. Anyone who thinks light from the upper part of a lens doesnt 'see' a barrel or sound mod from above a scope would do well to take another look at their setup: Its easier to check with a visible light torch.

ERM - forum cannot determine the size of the photobucket file I just tried to post up. :crazy:
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Ranger22
Posts: 64
Joined: 10 Jan 2013, 07:04
Location: West Coast of scotland

Re: reflected IR

Post by Ranger22 » 16 Oct 2018, 11:14

I have a stainless barrel and mod, taping the bottom third of the scope does work, it’s how I cured my issue

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some bloke
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Posts: 7546
Joined: 27 Jan 2012, 16:14
Location: Cornwall or Leicester

Re: reflected IR

Post by some bloke » 16 Oct 2018, 12:10

Ranger22 wrote:
16 Oct 2018, 11:14
I have a stainless barrel and mod, taping the bottom third of the scope does work, it’s how I cured my issue
Done that myself and there was an improvement, then I thought about what I'd done.

I felt I'd restricted the amount of time I could use the scope alone at dusk as it lets in a third less light - which partly defeats the point of adding artificial light to the scope.
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