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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Curious sextant add-on
From: Bill Lionheart
Date: 2020 Oct 22, 10:44 +0100
From: Bill Lionheart
Date: 2020 Oct 22, 10:44 +0100
Right but I don't imagine you recommend an IR spot light that illuminates the horizon for a star sight? So with just ambient light what would you see, I presume it is going to be better than the best dark adapted naked eyes? And what do stars look like under night vision devices? Anyone tried it?
Bill
On Thu, 22 Oct 2020 at 10:17, Gary LaPook <NoReply_LaPook@fer3.com> wrote:
The infrared illuminator is useful for close objects and is a refinement of the "Sniperscope" used at the end of WW2 and in Korea. We had similar devices on my M60 A1 tank, the M32 sight, but the tank also had a 10,000 watt infrared spotlight which could llight up an enemy tank at 2,000 meeters. The driver also had an infrared periscope and military vehicles all had infrared driving headlights. The attached photo of an M60A1 tank shows the infrared spotlight, it's the big box mounted above the main gun covered with a protective cover, It also shows the two infrared headlights, the're the black lenses next to the clear lenses on each side of the front of the hull.
gl
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