Great job! Love the shots. Unfortunately, I suspect that for an increasing number of us, light pollution is beginning to encroach on ideal places to indulge in our hobby during peacetime (ie. no natural calamities or man-made insurgencies) too.
Thanx Orion. 
Well I think its just the way it is. Being true flashaholics that we are, we’ll always find a solution to continue indulging in our hobby. 
I’ll try asking the guards this weekend to turn off the lights on that part of the fence while I get my beam shots. Its worth a try. :bigsmile:
LOL
So in order to throw 1.6km you need about 650kcd.
So set that as your goal!
Yeah!
What if in a day or two, a new type of LED capable of reaching 650 KCD easily at 4.5 Amps will suddenly flood the market? 0:)
Deft-X (or Maxabeam)?
Yeah! J)
But Deft-X is beyond my budget. :_(
But I trust the Chinese manufacturers are already in the final stages of their cloning process? :bigsmile:
I stand corrected. I do have one item in my inventory that reads 7800 lux at 11 meters in tests done moments ago. Computed to 1 meter, its 943,800 CD which means it can throw as far as 1943 meters. 
However, its not any of my flashlights. Its my green laser pointer. :bigsmile:
That is highly possible, just a matter of time. Considering single XM-L2 emitter can pumps out near 500kcd currently.
That also depends on the reflector/optics design and size, I believe if you put a dedomed XM-L2 or XP-G2 inside a SR90 size reflector you can immediately go beyond 650kcd. 8)
TN31 Dedomed at 6.5A does over 500kcd :)
Yeah this is what I mean. Back in two years ago when I just started this flashlight hobby a 150kcd thrower is considered amazing, and that could only be done with big aspherical head + XR-E. See how technology evolve.
It is not just technology. It is de-doming. XRE will still throw further if it runs on same drive current(up to 2,1 amp) than XP-E2 and XP-G2 when dome on.
Take dome off and things will drastically change.
Only question why do they not produce stock de-domed emitters?
Oh!
So my goal then is not impossible to achieve.
That’s what I heard.
My direct wired K40 with dedomed XM-L2 however turned out crap with only 2.55 Amps to the LED and a little over 200 KCD throw. 
I’ve ordered an XP-G2 on Noctigon and this I believe would make it a much better thrower - though still far from my 650 KCD goal.
Wow, IMPRESSIVE, Nightbird95 :D!
Makes me wanna buy BTU and mod it, even tho Im into NiMh lights!
Thanx vēer! I’m glad you liked it.
Yes this BTU is great but it can still be pushed even further. Others like TomE have changed their drivers with higher rated ones and used XM-L2 U2s. I’m only using XM-L2 T6 and stock BTU driver.
My understanding is, for the most part these LEDs are not manufactured with flashlights in mind at all. The goal is efficiency, brightness, and longevity. A dedomed is not as efficient... the dome helps to get more light out.
The bigger issue though, is longevity. For example, while for our applications 10000 hours would be way above and beyond anything needed in a flashlight, for a lighting fixture like a street lamp, it would be absolutely terrible, translating to way less than two years of run time.
What I would absolutely LOVE to see, is the LED manufacturers put out LEDs, but with a very very thin film for protection, as opposed to the dome.
Yes, I think that would be great. A win-win situation for us flashaholics. An LED that is good for throw but also lasts long.
Because you loose output, you still have low CRI, you mess up the tint, and you loose protection too. In terms of output and light quality a NW emitter is better in every way for normal light applications.
The amount of people who de-dome emitters are limited, and the processes is so simple that anyone can do it. Its as easy and effortless as making frozen pizza for dinner.
Having a thin layer instead of a large dome could possibly be beneficial if made correctly.
Something like the SBT-70.
Loose output? Well lumens loss - lux increase and I am pretty sure that 80% of people will want lux increase? Slightly lumen drop will not decrease visual impression.
Tint mes? After de-doming cool white emitters nice warm color appears.
We loose protection. Probably some kind of solution is in front of our face just no one tried that? Liquid glass shield or something like that.
Yes it is but I really doubt that some “regular flashaholic collector” will disassemble flashlight and use gasoline or heat - knife method to risk very nice light?
Yes you can actually de-dome without taking off emitter from pill/flashlight body thanks to TomE gasoline method but it can be messy, and isoproply alcohol bath cleaning after all that makes this pretty hard if you doing this first time.
But of course it should not be problem for BLF members :nerd_face: . Easy as pizza ordering ( I need 25 minutes for gasoline method).