NavList:

Bruce Bauer writes – The Sextant Handbook – “What many people end up doing is taking the sight bare eyed with the scope adjusted to compensate for vision defects and then putting on the glasses for reading time and altitude.”
My problem is that I can’t do that adjustment using my SNO-T sextant. I am short sighted – about minus 8 dioptres nowadays – and it isn’t possible to shorten the Galilean scope enough to get a clear image without glasses. Thus my problem is reversed to that described by Bruce Bauer. I can read and write both with and without glasses but I can’t take sights without them.
The solution is so obvious and simple that it must have been tried before. A compensating lens is gently pressed into the rubber eye shield. It is a lens from an old pair of glasses, cut circular, diameter 28 mm.
See attachments!
I am of course aware of that this is possible because of the design of this particular eyes shield and perhaps not optimal from an opticians point of view - but for me better than a sextant / glasses combination.
As to taking off / putting on glasses when using binoculars or taking sextant sights I just push them, the glasses, up above my eyebrows. A slight grimace and they are back on my nose. And it helps that I always have a glasses strap when aboard.

Paul Werner

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