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Posted: 3/28/2021 4:24:16 AM EDT
[#1]
Add the FTS NAIL lever too to cover the metal slider.
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Posted: 3/28/2021 4:44:07 AM EDT
[#2]
Those are nice! I just ordered one. Will have to cut my post down a tiny bit since it is designed for using with a butler creek cap.
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Posted: 3/28/2021 6:28:29 AM EDT
[#3]
Love it. I wonder if there is a source for the ones like on the iRay MH25 - no lever needed.
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Posted: 3/28/2021 7:49:30 AM EDT
[#4]
Great idea, thanks!
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Posted: 3/28/2021 8:51:00 AM EDT
[#5]
Very cool. Thanks for posting. My issue with the Tarsier, if you can call it an issue, is the extreme profit margins. It's like a 600% markup for a product (iris diaphragm) that already existed. They just modified it slightly for NVG application. I have no problem with capitalism but I'm also free to spend my money elsewhere
 If they had some competition, I guarantee the price would drop significantly. Similar to what happened to the RMR. |
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Posted: 3/28/2021 10:02:16 AM EDT
[#6]
Quote HistoryQuoted: Add the FTS NAIL lever too to cover the metal slider. https://fts.website/products/nvg-adjustable-iris-lever-nail $5 $21 $12 $5 $9 $5 $57 (Or if you have duals $114) Plus some of your time. Yep. I’m ordering all this stuff soon. |
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Posted: 3/28/2021 10:08:43 AM EDT
[#7]
$50-60 per tube. That’s a hell of a price savings. May have to try this just for fun sometime soon.
Any issue busting out the glass in the sacrificial lens as I’d prefer less glass in front of the objective. Or am I asking for trouble with being able to easily damage the “tarsier” part? |
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Posted: 3/28/2021 12:11:47 PM EDT
[#8]
I never liked the tarsiers. They look goofy and cost way too much. Especially when a flip caps works just as well.
I may try this just for the DIY fun. I also don understand people that put refocus devices on both tubes of a bino. Maybe its similar to how people buy every gadget they can for their first AR15. But I've never used a refocus device for more than a quick look or fix with just one eye. Having only one eye "refocused" also allows you to have bifocal vision and be able to look up at anything making noise in the distance hands free, so you don't lose the situational awareness that you would with both tubes "refocused." I guess it's just another one of my pet peeves, similar to people with using super bright annoying IR strobes on their helmet. (I know it can be useful for a point man in the woods, still a pet peeve) |
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Posted: 3/28/2021 12:17:45 PM EDT
[#9]
My only issue with these is that even fully opened, the iris is still smaller than the diameter of the objective lens, blocking some light. In low light situations, every bit helps.
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Posted: 3/28/2021 12:55:35 PM EDT
[#10]
Quote HistoryQuoted: Very cool. Thanks for posting. My issue with the Tarsier, if you can call it an issue, is the extreme profit margins. Literally my inspiration for this project. I get that it is a small market for people with big pockets, but I dislike being taken for a ride lol. @sogan The sacrificial window removal was the easiest part of the project. They push right out. You can totally skip adding it but it will make your unit much more fragile. The iris leaves are not sturdy and would gum up with dust/dirt easily. @Synyster I was worried about that a bit as well but I have not noticed any significant light reduction taking it on and off looking through the tube in a dark closet. Their "might" be the tiniest reduction... But it is so small I am not convinced it is a real functional issue. I need to take some calipers to check but I don't think it is actually narrower than the lens as the objective has a big rim on the 14. I mainly made these for use when walking and running in my neighborhood to protect my tube from bright lights easily rather than taking my caps or a ir pass filter on and off. I don't really need a refocus device for deep woods use so I'm not too fussed for myself if it is causing a small decrease. That said using a 30mm iris would likely be ideal rather than this 25 mm one. I bought this one to fit into a butler cap before changing gears. Someone should try this: Use a 30mm to 37mm step up ring (5$) instead of a filter ring. https://www.bhphotovideo.com/c/product/809732-REG/Sensei_sur3037_30_37mm_Step_Up_Ring.html/?ap=y&gclid=Cj0KCQjw0oCDBhCPARIsAII3C_GtPGcV5nfqQ88a4pxcDp8eZrKIjG42yVOQ4owbysMMaIRDUFvPm6waAnkeEALw_wcB&lsft=BI%3A514&smp=y 30 mm iris (35$) https://www.ebay.com/itm/Zoom-Iris-Aperture-Adjustable-Iris-Diaphragm-1-5-30mm-/174580349655?_trksid=p2349624.m46890.l49292 You won't be able to use the sacrificial lens glass anymore with this. Most likely using a camera lens uv/clear filter would be the solution. I'm not going to suggest a specific one without measurements. |
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Posted: 3/28/2021 1:02:09 PM EDT
[#11]
Quote HistoryQuoted: My only issue with these is that even fully opened, the iris is still smaller than the diameter of the objective lens, blocking some light. In low light situations, every bit helps. Honestly I can't tell that it does to any significant amount that is even noticeable. I have looked to see if it blocks your field of view and how it affects light input and I couldn't perceive a difference. |
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Posted: 3/28/2021 1:09:27 PM EDT
[#12]
Here are mine. I just put them in the lens covers and a single line of electrical tape on the inside of the scope cover to make it fit snug on the lens.
 
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Posted: 3/28/2021 4:51:56 PM EDT
[#13]
Is there any advantage to the adjustability of the iris system over an all or nothing lens cap modification?
I use the lens cap mod and can't really see a point in having a 'medium' setting, since it is essentially a pinhole camera effect. |
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Posted: 3/28/2021 7:17:09 PM EDT
[#14]
Probably not if you are looking for an infinity to up close focus. But a medium would work for medium range. I’d prefer iris over the butler just because I don’t want the lens cap flipped up. It would drive me nuts I think
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Posted: 3/28/2021 7:37:21 PM EDT
[#15]
Cool mod. Although I do not feel very flexed on
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Posted: 3/28/2021 8:26:01 PM EDT
[#16]
Quote HistoryQuoted: Probably not if you are looking for an infinity to up close focus. But a medium would work for medium range. I’d prefer iris over the butler just because I don’t want the lens cap flipped up. It would drive me nuts I think Yeah, I really dislike how clunky the butler creek cap is. Makes focusing harder, etc which is why I like this. |
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Posted: 3/28/2021 11:46:17 PM EDT
[#17]
Now take some through-the-lens video and show us how it looks.
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Posted: 3/29/2021 3:30:32 AM EDT
[#18]
If you've got fixed-gain; iris-style adjusters can be an efficient way to adjust the brightness of your view while also gaining additional depth of field. This is also why diopter eyepieces are helpful to have in both lenses for bino NVGs.
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Posted: 3/29/2021 2:12:24 PM EDT
[#19]
I have a Tarsier and frankly I'd rather spend the money to buy one than go through all that trouble.
Being able to adjust to a mid distance focus though is awesome. I set for infinity focus, which is great outdoors, but it's nice when you come indoors into a small space to refocus and see everything more sharply (of course it requires IR light in dark interior spaces when focusing closer). |
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Posted: 3/29/2021 2:45:32 PM EDT
[#20]
Did you do anything to check the timing of the ring threads so that your adjustment levers ended up where you wanted them? I could see threading the rings in before gluing them on and marking TDS so everything lined up right.
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Posted: 3/29/2021 3:05:22 PM EDT
[#21]
Quote HistoryQuoted: Did you do anything to check the timing of the ring threads so that your adjustment levers ended up where you wanted them? I could see threading the rings in before gluing them on and marking TDS so everything lined up right. No. I guess you could do that so that it was set at infinity focus and in a nice spot, but since the whole thing spins with the focus ring it seems mostly pointless to me. As for actual hassle, it was pretty easy to do. It should take less than an hour of actual time input. Given the price differential that's about 165$ for an hours worth of work you can do while watching TV. Not bad pay even for most of us in the NV game. |
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Posted: 3/29/2021 4:45:14 PM EDT
[#22]
Quote HistoryQuoted: Now take some through-the-lens video and show us how it looks. Second this |
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Posted: 3/29/2021 6:39:46 PM EDT
[#23]
Quote HistoryQuoted: Literally my inspiration for this project. I get that it is a small market for people with big pockets, but I dislike being taken for a ride lol. @sogan The sacrificial window removal was the easiest part of the project. They push right out. You can totally skip adding it but it will make your unit much more fragile. The iris leaves are not sturdy and would gum up with dust/dirt easily. @Synyster I was worried about that a bit as well but I have not noticed any significant light reduction taking it on and off looking through the tube in a dark closet. Their "might" be the tiniest reduction... But it is so small I am not convinced it is a real functional issue. I need to take some calipers to check but I don't think it is actually narrower than the lens as the objective has a big rim on the 14. I mainly made these for use when walking and running in my neighborhood to protect my tube from bright lights easily rather than taking my caps or a ir pass filter on and off. I don't really need a refocus device for deep woods use so I'm not too fussed for myself if it is causing a small decrease. That said using a 30mm iris would likely be ideal rather than this 25 mm one. I bought this one to fit into a butler cap before changing gears. Someone should try this: Use a 30mm to 37mm step up ring (5$) instead of a filter ring. https://www.bhphotovideo.com/c/product/809732-REG/Sensei_sur3037_30_37mm_Step_Up_Ring.html/?ap=y&gclid=Cj0KCQjw0oCDBhCPARIsAII3C_GtPGcV5nfqQ88a4pxcDp8eZrKIjG42yVOQ4owbysMMaIRDUFvPm6waAnkeEALw_wcB&lsft=BI%3A514&smp=y 30 mm iris (35$) https://www.ebay.com/itm/Zoom-Iris-Aperture-Adjustable-Iris-Diaphragm-1-5-30mm-/174580349655?_trksid=p2349624.m46890.l49292 You won't be able to use the sacrificial lens glass anymore with this. Most likely using a camera lens uv/clear filter would be the solution. I'm not going to suggest a specific one without measurements. Very slick idea to put the sacrificial window over the iris. On my iRay, which gets a lot of use, the iris is subject to grit and wear and tear for sure and it doesn’t protect the lens. Granted, it’s a thermal so you can’t put glass in front of it. But in this application, you’re on to something there |
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Posted: 3/29/2021 6:44:54 PM EDT
[#24]
Neat
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Posted: 3/30/2021 2:24:54 AM EDT
[#25]
As requested, through the tube adjusting only the iris.
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Posted: 4/25/2021 3:41:51 AM EDT
[#26]
noob here. so to use this you would have the objective set for a focus infinity, right?
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Posted: 4/25/2021 9:11:53 AM EDT
[#27]
Quote HistoryQuoted: noob here. so to use this you would have the objective set for a focus infinity, right? Yes. That would be the best practice. |
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Posted: 4/25/2021 9:19:29 AM EDT
[#28]
Also if someone wants to take it to the next level you can pop out the sacrificial window and slip them inside the lens cover before the diaphragm and have a protective lens too.
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Posted: 4/25/2021 9:44:15 PM EDT
[#29]
I can see how this will help out a MX-10160 tube like I have that has no manual gain. And, urban and then deep woods application, it would be a lot easier to control the level of light hitting the scope lens. I'm going to give this project a go for sure. Thanks for the info.
--- |
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Posted: 4/26/2021 2:34:56 AM EDT
[#30]
Quote HistoryQuoted: Also if someone wants to take it to the next level you can pop out the sacrificial window and slip them inside the lens cover before the diaphragm and have a protective lens too. got a pic of this in practice? thanks. |
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Posted: 4/26/2021 6:43:33 AM EDT
[#31]
Built one out of boredom on a lazy saturday here.
Well done writeup, easy to do and very functional. Thanks for the input OP! |
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Posted: 4/26/2021 10:12:37 AM EDT
[#32]
Can you tell us what size Butler Creek cap are those? And, is that the same size iris as first mentioned?
Thanks, --- |
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Posted: 5/12/2021 2:53:26 AM EDT
[#33]
deleted the original cause everyone was catching on huh?
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Posted: 5/12/2021 4:38:22 AM EDT
[#34]
Build it yourself is not welcome anymore ?
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Posted: 5/12/2021 11:49:57 AM EDT
[#35]
I made my DIY the other night only took less than a hour to make the cut/measurements.
https://www.lowlightinnovations.com/product-page/lli-night-vision-filters This clear lens filter will fit perfectly flush with the butler creek object hole and also screw into the NVG objective housing. For the perfect cut of the diaphragm slider measure from the end of the Butler Creek cap 0.3" forward and then make your horizontal cut of 1.7" ish point to point for the slider. This cut will provide your filter lens to sit flush with the objective cap along as sacrificial lens to keep dust from getting onto the diaphragm. The diaphragm is a snug fit into the lens cap and will butt up to the lens filter from the back along with the cut for the diaphragm slider. YMMV |
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Posted: 5/12/2021 11:51:40 AM EDT
[#36]
Quote HistoryQuoted: Can you tell us what size Butler Creek cap are those? And, is that the same size iris as first mentioned? Thanks, --- https://www.amazon.com/dp/B000H37SGO/ref=cm_sw_r_u_apa_glt_fabc_0EQAJNSAM4T14GWXQJ14?_encoding=UTF8&psc=1 |
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Posted: 5/13/2021 10:54:04 AM EDT
[#37]
Why was the OP edited
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Posted: 5/13/2021 11:24:28 AM EDT
[#38]
Quote HistoryQuoted: Why was the OP edited Tarsier sued him  |
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Posted: 5/13/2021 11:33:36 AM EDT
[#39]
Quote HistoryQuoted: Tarsier sued him "Night Vision Companies hate him for this one simple trick" 
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Posted: 5/13/2021 12:11:15 PM EDT
[#40]
Off to make his own and sell them on eBay for a 20% markup...
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Posted: 5/13/2021 12:30:41 PM EDT
[#41]
I made something similar 20 years ago for a NVD, using an iris and all, I love to tinker and do things myself anyway.
Should have I put them on the market myself back then? Don't know... however things happen if you don't have a patent on something then you are SOL, ask me how I know. So OP deletes the original post? Interesting. I'm thinking more and more this site is not really geared for us DIY NVD and hobby folks, at least to me, however I'm kinda new. Finishing mine up for a 14 today. If you have a setup with no manual gain, this thing works great. Thanks for the info. --- |
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Posted: 5/13/2021 7:10:36 PM EDT
[#43]
Quote HistoryQuoted: Love mine. https://live.staticflickr.com/65535/50067138991_be47fffdac_b.jpgBNVD-UL by J M, on Flickr Nice  Don't see a lot of Skull Mounts in use. Those things are super comfortable. |
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Posted: 5/14/2021 3:10:41 AM EDT
[#44]
Quoted: Test @ShoulderThingGoesUp Repost, please |
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Posted: 6/1/2021 10:54:26 AM EDT
[#45]
Since OP left us hanging, I'll re-up this thread with my own update.
I wanted to try this but since OP deleted the original thread and GTFO'd I enlisted the Autocad guy in my engineering department to help me out. I bought a sacrificial lense as well as the adjustable iris and explained to him what I was trying to accomplish. He did his computer thing with the 3D printer and I have a v1 of a diy tarsier. I want to get him to refine a couple things before I have him make me a set for my dtnvs.  Attached File Attached File |
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Posted: 6/1/2021 11:05:10 AM EDT
[#46]
Quote HistoryQuoted: Since OP left us hanging, I'll re-up this thread with my own update. I wanted to try this but since OP deleted the original thread and GTFO'd I enlisted the Autocad guy in my engineering department to help me out. I bought a sacrificial lense as well as the adjustable iris and explained to him what I was trying to accomplish. He did his computer thing with the 3D printer and I have a v1 of a diy tarsier. I want to get him to refine a couple things before I have him make me a set for my dtnvs. https://www.ar15.com/media/mediaFiles/384011/20210601_093304_jpg-1963033.JPGhttps://www.ar15.com/media/mediaFiles/384011/20210601_093317_jpg-1963034.JPG You’re goddamned right freedom is a mindset. This is the way. |
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Posted: 6/1/2021 2:39:51 PM EDT
[#47]
Nothing is truly deleted off the internet... For those of you who are still interested:
https://web.archive.org/web/20210328085946/https://www.ar15.com/forums/Armory/How-to-flex-on-the-rich-Making-your-own-Tarsier/18-523560/ Ive saved the webpage as an offline document, so it this goes down for whatever reason, just IM me and Ill send it to you. |
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Posted: 6/6/2021 7:24:54 PM EDT
[#48]
Quote HistoryQuoted: Nothing is truly deleted off the internet... For those of you who are still interested: https://web.archive.org/web/20210328085946/https://www.ar15.com/forums/Armory/How-to-flex-on-the-rich-Making-your-own-Tarsier/18-523560/ Ive saved the webpage as an offline document, so it this goes down for whatever reason, just IM me and Ill send it to you. hmmmm, just saw them went up for sale on reddit: https://www.reddit.com/r/GunAccessoriesForSale/comments/ntxi3g/wts_goon_eye_20_pvs_14rnvgdtnvsdtnvg_refocusing/?utm_source=share&utm_medium=ios_app&utm_name=iossmf |
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Posted: 6/7/2021 4:54:08 AM EDT
[#49]
Quote HistoryQuoted: Nothing is truly deleted off the internet... For those of you who are still interested: https://web.archive.org/web/20210328085946/https://www.ar15.com/forums/Armory/How-to-flex-on-the-rich-Making-your-own-Tarsier/18-523560/ Ive saved the webpage as an offline document, so it this goes down for whatever reason, just IM me and Ill send it to you. You're the best ! |
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Posted: 7/19/2021 1:02:51 AM EDT
[#50]
Pretty sure that’s the same op as this post
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