Night Vision L3 and ITT tube Pics..+laymens terms

[Asm1]

<span style="font-size: 20pt">OMNI-7 ASM1-PVS14 DF2 Hand select++</span>

2050 PS
1798 FOM
EBI 1.9
64 LPI center
57 LPI edge
40 lpi high light
28.1 sn
.99 halo
spot in zone 1 .003-.006
chicken wire/dark lines acceptable

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<span style="font-size: 17pt">L3 DF2-Tail THIN FILMED ASM1-14 PVS14++</span>
Gain turned 3/4.

<span style="font-family: 'Arial Black'">2551 PS
1869 FOM
2.5 EBI
64 LPI center
64 LPI edge
45 Hi light RES.
29.2 SN
.97 HAL0 </span>

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<span style="font-size: 17pt">L3 DF3 Filmless ASM-1 Mini Monocular </span>

<span style="font-family: 'Arial Black'">
1690 PS
2172 FOM
0.40 EBI
26.4 SN
64 LPI Center Res
57 LPI EDGE
40 LPI HI LIGHT Res
0.94 HALO</span>

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<span style="font-size: 17pt">ITT Night Enforcer Pinnacle Didnt come with a Data sheet </span>

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<span style="font-size: 17pt">L3 DF3 Filmless ASM-1 Mini Monocular </span>

<span style="font-family: 'Arial Black'">2421 PS
2080 FOM
1.8 EBI
32.5 SN
64 LPI Center
57 LPI Edge
40 LPI Hi Light
0.71 HALO </span>

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<span style="font-size: 17pt">ITT Anvis F8900AG ASM-1 Mini Monocular </span> Aviation Grade Tube..
<span style="font-family: 'Arial Black'">
2429 PS
1747 FOM
0.70 EBI
64 LPI Center
64 LPI P1
64 LPI P2
40 LPI Hi LIight
0.66 HALO </span>

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A tube is the heart of a Night Vision Monocular/PVS14.GEN3 and GEN3+ 18MM TUBES are sealed Units and drop in the body OF MONOCULAR OR pvs14'S and other types using a simple retainer Ring and some Purge Of Nitrogen"THERE ARE WAYS AROUND Purge IF NOT AVAILABLE TO YOU",Just keep the lens's clean keep the dust Out.
I Know To some The IDEA of a NVD inside Is Mind blowing..Really guys there is no MAGIC AND the hard stuff is DONE ALREADY inside,there Sealed Tube Assembly for Christ sake...Its easy all the parts are pre built and its 10 Minutes to build one.Dont be Fooled Into the Bullshit that NASA suites and Hand select techs must assemble these.Now, AQUILA's Raptors and CLIP ons and such are a Diffrent ballgame!

If I can help any of you with your home Builds with advice just Send me Message its free.Building your own is not always an Option or worth the worry that you did it right,Lets face It some Of use just are better at this than others and that Fine,Nothing wrong with that.



True Performance is measured In the Results of use,I do not Agree with some DATA sheets. I questioned some to be true. If All DATA sheet Numbers ARE true and the DATA sheets I Question are True Numbers of performance derived from EQUIPMENT/TEST and are In FACT true,I Can say there is lack of an EXPERIENCED Hands on TEST that should be performed compare against DATA SHEET. However DATA sheets do have Information to a tubes Performance and overall Can help in the measure Of the Performance of a Tube.There are Sleepers out there though!

WARNING
I was at the Sink or SWIM University for only One Day..

This is a simple to understand list of what these DATA sheets tell me,it is not perfect in tech.Maybe I am not correct on the way this works? But I will pick My tube and if you Know better you pick yours and lets go do My testing and see what you got..

FACTS are what works for me and How I use these Numbers when I have 40 Tubes To check Out against each other. SOME tubes are sleepers and blow your Mind if You LUST after DATA sheets You may be missing out?

"PS" = Photo cathode Sensitivity
will fill in Later

"FOM" Figure Of Merit
This is derived from The Signal to Noise multiply x the center Resolution
Example You have 25 signal to noise and 64lpi center resolution 25x64=1600 That "1600FOM"
This is Two of the Numbers with an overall performance VALUE that give a GOOD idea of a Tubes performance. There are Other Performance Numbers That matter as well.
FOM is good sales Tool if the Numbers are Hi,But Don't get hung up only on FOM,Its very possible Tubes with Lower FOM numbers could outperform tubes with Higher FOM numbers.

"LPI"
Its Just that simple,Tube Read Lines in test,45,57,64,72 are common numbers,seeing 57LPI for example may in fact almost see 64LPI or 57 may have been its Limit,the Outer image is tested and could have a Lower LPI than center resalution.Aviator tubes go a step father, they rate Center and outer,But also between,They will have 3 SETS on LPI numbers.These Tubes are used to Fly Aircraft so Resolution is King on aviation.

HI-LIGHT LPI
In Hi Light the LPI is taken again to measure How the Tube DOES when it REAL Bright or Hi Light .

"SN" Signal to Noise
This is the SPARKLE SNOW in the IMAGE Dark conditions this is Pronounced,Higher this Number is less SNOW you will see when Its straining from low Light,The "snow sparkles" NOISE so its called does Not block the Image for me I can see threw SN as Long as the Tube is a performer its Fine.
I have Noticed L3 tubes with LOWER SN numbers suffer much less than ITT with equal SN.

"EBI"
This is the Point at which the tube will stop seeing an Image when the Light is less than than it can operate in..I call it GREEN OUT..
Lower EBI numbers are Better when you are in very dark coinditions.I have seen Hi EBI numbers make some Stupid Clear tubes In Normal Light to Hi light,They they always loose To lower EBI when its dark enough.

"HALO"
you can see in the Picks,Look at the street Lights in the back ground, BLOOM is what you see around lights and its called HALO,Larger HALO Numbers= larger HALO..The Larger HALO numbers also increase the Tubes Recoil Damage Resistance,The Larger HALO will Also Blum Your AIMING lasers and the DOT will seem to be Larger with Larger HALO.

I Will do more later...Stay safe and Don't Think your in the Dark I am just a PM away...

 

[livetohunt]

Re: L3 and ITT tube Pics..

Great post !!!!!!!!!!

 

[cj7hawk]

Re: L3 and ITT tube Pics..

Nice article, but since it looks like you intend to go back and edit it later, I thought I'd help with a couple of errors in your comments.

Resolution is actually measured in "Line Pairs per millimeter" not "Lines Per Inch" - That pairs is really important, because 64 line pairs = 128 lines. Also, it's not as simple as that. Imagine dark and light lines side by side - that's a "Line Pair". When they get too fine, they just appear grey. When they are large in the screen, they appear bright and dark and are well defined.

What's missing is that line-pairs is just a unit. The measure is actually called Limiting Resolution. Limiting Resolution is the point at which the variation between light and dark is just three percent... Which is on the limit of human perception to see either a pair of lines or a single grey mass.

So limiting resolution is actually the important measure there and everything has to be perfect to see it. Don't ever expect to see it with a normal tube in a housing.

The missing information here is also another measure called MTF and it's particularly important to understand what MTF is because that defines how much contrast you will get in fine detail. Typically, tubes work well at around 32 lp/mm resolution. MTF is modulation Transfer Function and is defined for tubes as well.

S/N isn't quite right. It's the different in light produced by a bright spot on the screen, compared to the light produced by no light spot on the screen. They flash the light at about 10hz from memory. The scintillation doesn't have that much effect in the end. I've seen a tube with S/N well over 33:1 that had a huge amount of scintillation due to MCP noise. Ion scintillation is different again.

Also, it is not wise to view EBI that way. EBI is a lot more complicated and is worth learning about if you want to work with image tubes for photography. The easy way to understand EBI is to know that less than 2.5 is good. More than 2.5 is bad. The lower the better. Any more than that requires a little specialist knowledge and effort to understand fully - though to extend on what I said, aim for EBI lower than 1.0 if possible. There is a correlation between EBI and PC sensivitity. Once you understand this relationship and have mapped the distribution of this for a batch, you're in a good position to make an educated decision on the EBI for a given tube, because higher EBI does not always mean a lower picture quality.

Otherwise, you're getting there. I look forward to seeing your continued article.

For the most, you were on the right track.

Regards
David

 

[Asm1]

Re: L3 and ITT tube Pics..

<span style="font-family: 'Arial Black'">This is Bullshit</span>

 

[wes1]

Re: L3 and ITT tube Pics..

Yep, Bullshit.
Dino should be posting shortly, good cop/bad cop is the SOP.
BTW, the word "tactical" is the most over used term in the gun industry.

 

[boreal]

Re: L3 and ITT tube Pics..

Great info "SOP", lol. I notice that too. They have good solid knowledge though and I appreciate it. Are the L3 filmless the cream of the crop for darkness use? ITT great at marketing? I went with the safe route of a 5 year warranty by Night Enforcer. Great resolution and image with enough light, but not stellar in the dark. Would the filmless shine in the dark?

 

[OmegaMan]

Re: L3 and ITT tube Pics..

I am only gonna warn the two of you once, the next time both are permanently banned:

A user from the IP X.X.X.X.X. has logged in to the following accounts: cj7hawk, OmegaMan

 

[OmegaMan]

Re: L3 and ITT tube Pics..

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: OmegaMan</div><div class="ubbcode-body">I am only gonna warn the two of you once, the next time both are permanently banned:

A user from the IP X.X.X.X.X. has logged in to the following accounts: cj7hawk, OmegaMan </div></div>

Hi Frank,

My name is Dino and I can assure you that Cj7Hawk and Omegaman are two different people. The IP address is the same because we are both in Las Vegas for Shot Show staying at the same hotel.A simple IP search will confirm the address is from Las Vegas. In addition if you search out past posts you can see one IP is from Australia and one from the USA.

I have not addressed anything else in this thread as I believe CJ7Hawk is completely capable of speaking for himself. I see some comments in posts above that were unprofessional and off topic not edited. I ask you to keep an open mind and if you would like to speak to me I will be at Shot Show and will also PM you my cell number if you would like to speak with me in person.

If my warning is only for the matching IP addresses this can easily be confirmed to your satisfaction.

Best regards, Dino

 

[cj7hawk]

Re: L3 and ITT tube Pics..


Frank, I sent you an IM.

This post will also show as being from the same IP address as the above for the reasons mentioned.

Regards
David

 

[Asm1]

Re: L3 and ITT tube Pics..

It all is Depending on the spec of the Tube You have,But Yes Filmless has In fact shown to Do better In the dark conditions than the ITT tubes we have Ran,Actualy the L3 Omni7 tubes have Out performed the Pinnacle Tubes we have used in darker conditions,And I am not talking about we pulled the best OMNI7 eather,The performance Of L3 is Outstanding.



<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: boreal</div><div class="ubbcode-body">Great info "SOP", lol. I notice that too. They have good solid knowledge though and I appreciate it. Are the L3 filmless the cream of the crop for darkness use? ITT great at marketing? I went with the safe route of a 5 year warranty by Night Enforcer. Great resolution and image with enough light, but not stellar in the dark. Would the filmless shine in the dark? </div></div>

 

[jasonk]

Re: L3 and ITT tube Pics..

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cj7hawk</div><div class="ubbcode-body">
Frank, I sent you an IM.

This post will also show as being from the same IP address as the above for the reasons mentioned.

Regards
David</div></div>

So you made it from Australia to your room in Vegas in only 10 hours? Simply amazing!!

 

[Kevlars]

Re: L3 and ITT tube Pics..

A good tail wind ... lol

 

[cj7hawk]

Re: L3 and ITT tube Pics..

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jasonk</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cj7hawk</div><div class="ubbcode-body">
Frank, I sent you an IM.

This post will also show as being from the same IP address as the above for the reasons mentioned.

Regards
David</div></div>

So you made it from Australia to your room in Vegas in only 10 hours? Simply amazing!!
</div></div>

As a moderator you can see my addresses coming up, so no doubt you've seen an IP address come up from Australia and one from the US about 10 hours apart. If you don't understand how the Internet works, I'd be happy to assist with some technical information by PM - just let me know.

But accusing me or inferring that I'm lying based on that information is pretty unprofessional for a moderator.

I sometimes access the Internet from the hotel directly. I sometimes open an encrypted VPN back to Australia to receive my emails and during those times if I access your forum, my IP address will appear to come from Australia due to my turning Split Horizon off on the crypto tunnels for security.

If you check the cookie consistency on the forum logs, you'll probably be able to verify that. In fact, it should be pretty obvious to a moderator.

Regards
David

 

[Vette447]

Re: L3 and ITT tube Pics..

ASM1, I appreciate the info in the original post and your trying to help a "layman" understand the different terms. It helps me to hear the different terms explained and see some images from different tubes as well.

 

[oneshot976]

Re: L3 and ITT tube Pics..

Vette, I couldn't agree more. To finally find someone that will put laymen's
terms to the complexity of night vision is exactly what many of us need.

Guys I just picked up the Omni 7 unit that you see in the first three photo above from Frankie. The reason that I did is because he spent as much time as it took to make sure that I made the decision that was best for me. He asked several questions about my intended use until he was sure he could provide me the unit that best met my needs. I have never talked with anyone in the night vision industry that made a buying decision so easy and worked so hard to make sure I got all the answers to my questions.

Frankie is a great guy that truly strives to exceed the customers expectations. Not to mention he offers high quality product at very fair prices. I wouldn't hesitate to recommend him to anyone I know and I will do more business with him in the future!

Thanks for a great buying experience Frankie!

Oneshot