FLIR Boresighting & very dark night
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@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.
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@oakdesign said in FLIR Boresighting & very dark night:
@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=sharingdefault nvgmask.dds file is ok for my screen resolution (32/9)
I’d like to know how to do to increase the circle to get this ( see below). indeed, the current FOV is well too small according to the data found
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NVGs will perform poorly if there’s little to no ambient light since the photocathode needs visible and near visible radiation (400 nm to 1000 nm) to work at all. FLIR uses longer wavelengths (no visible) of 3000 nm to 12000 nm so infrared. Unless you’re flying over the Arctic, FLIR will provide useful visual information based on the relative IR emissions of things radiating on the ground.
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I see, then the FLIR is more useful than NVG. I thought both use IR radiations, apparently not. But in BMS the FLIR image do not entirely fill the block 40 HUD. It looks as though it’s made for the standard F-16 HUD (blocks 32 & below as well as 52 & above).
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@alfred Gen 1 NVGs used IR illuminators but these are naturally limited in range and give away the position of the operator. Current NVGs only amplify ambient visible and near IR, i.e. they don’t have an illuminator.