FLIR Boresighting & very dark night
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I tested FLIR when the night was very dark and I 'd like to know how to boresight correctly the FLIR camera to avoid parallax error if we can’t see the horizon & montains…
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maybe try boresighting on something bright, like a city or a lit runway
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@suhkoi69 go trail and boresight on someone’s airplane?
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@awmk1 may be he was going into a cloud
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@freedomlike indeed it doesn’t help !
Now without moon light, the night is become very dark and in some situation, there is no really workaround…NVG vision quality is so poor in term of FOV & visibility and so NVG are unsuitable…this is why I tried to use FLIR system but I think to use them without parallax error correction…@Seifer This is really a point which I 'd like to see improved: the NVG googles should be very sensitive to low lights until it can dazzle strongly…currently, there is no enough constrast & brightness: this is very hard to see the flight ligths & strobe lights…this is the same case with Sniper TGP : IR vision should bring an advantage …here the graphic enhancement could be bring more realism
my 2 cents! -
@suhkoi69 U3 seemed to fixNVGs worst flaw for me. U2 on a moonless night FLIR was better than the goggles.
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@awmk1 it 's yet true ; no change…
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@suhkoi69 No change between u2 and u3 for you? I thought I noticed a vast difference.
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@awmk1 I will send some screenshots with U3 about this topic
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@suhkoi69 yeah that night vision looks terrible
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Apart of the FLIR. I wouldn’t use Fullscreen NVG as that is not how it looks when you have NVG on and with Full Screen NVG off in configurator one can adopt the used mask to it’s liking
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@awmk1 This is realistic, no? On a night with very low ambient lighting FLIR should be better due to using different images to intensify.
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@oakdesign you are right ! fullscreen NVG is not realistic but the realistic FOV use doesnt bring any interest in current version for the reasons I mentioned previously…
I guess the current NVG FOV is well 40°… -
@suhkoi69
I checked the current FOV in BMS and it is not equal to 40° but rather close to 30° (see the comparison below)I found some papers where there are interesting things about NVG:
https://ntrs.nasa.gov/api/citations/20030063076/downloads/20030063076.pdf
https://www.cnatra.navy.mil/local/docs/pat-pubs/P-431.pdfhttps://trace.tennessee.edu/cgi/viewcontent.cgi?article=3148&context=utk_gradthes
the FOV for AVS-9 is 40°
but in BMS , the FOV is smaller than expected (screenshot taken from default position)
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@suhkoi69 that is what I stated If you want to have it a wider FOV ie circle just make your own overlay as it just a image with an alpha map and saved as dds.
Several round nvg mask for different screen resolutions
https://drive.google.com/file/d/1TkkDFv1tRrR4Bgqs7lTvBb8oJh0Uct6m/view?usp=sharing -
@awmk1 said in FLIR Boresighting & very dark night:
@suhkoi69 U3 seemed to fixNVGs worst flaw for me. U2 on a moonless night FLIR was better than the goggles.
This is somewhat realistic, Gen3 NVGs do not perform as well on complete darkness nights. This is why you have IR illuminators mounted on ground equipment/goggles, but at aviation ranges, they aren’t useful (except TGP IR pointer)
@suhkoi69 said in FLIR Boresighting & very dark night:
@oakdesign you are right ! fullscreen NVG is not realistic but the realistic FOV use doesnt bring any interest in current version for the reasons I mentioned previously…
I guess the current NVG FOV is well 40°…
Yes, but one thing you’ll notice is that as you change FOV, the NVG FOV doesn’t actually change, so if it doesn’t work at your favorite FOV, modify it. At my normal FOV it is close. Again though, NVGs in RL are not used to look inside the cockpit! I’d be happy to share the .pdf of the ppt that I got that image from, the new boards won’t let me attach it.Also in case anyone asks, panoramic NVGs (100 degree fov) did not pan out for use in fighters due to their weight and bulk.
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@suhkoi69 agree 100% NVG should depend on object’s self radiation and not reflections from moon or an early morning sun. The way it is now gives an impression that objects do not radiate at all. Also, the contrast of the TGP is terribly in need of adjustment. Contrast of objects and terrain changes as you change the magnification and at some point one can’t tell terrain from object.